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Fang X, Peng B, Song Z, Wu S, Chen D, Zhao Y, Liu J, Dai Y, Tu X. Geochemistry of heavy metal-contaminated sediments from the Four River inlets of Dongting lake, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:27593-27613. [PMID: 33512684 DOI: 10.1007/s11356-021-12635-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 01/20/2021] [Indexed: 06/12/2023]
Abstract
The concentrations of major and trace elements in the sediments from the Four River inlets of Dongting Lake were analysed. The results show that the element compositions of the Four River inlet sediments are different, among which higher amounts of Al2O3, Fe2O3, MnO, Cs, Rb, Th, U, Y, and REE are found, while MgO, CaO, Na2O, and Sr are more depleted in the sediments from the Xiangjiang and Zijiang inlets than in the sediments from the Yuanjiang and Lishui inlets. The Xiangjiang inlet sediments are distinctly higher enriched (EF > 5.0) in heavy metals Bi, Cd, Mn, Cu, Pb, and Zn, while the other river sediments are moderately enriched (EF > 2.0) in these heavy metals. These geochemical differences are resulted from the source lithology, chemical weathering, hydrological sorting, and anthropogenic processes taking place in the watersheds. The principal component analysis and the geochemical vertical profiles suggest that the trace metals Ba, Mo, V, Cr, Co, Ni, Cs, Rb, Sc, Th, U, Ga, Ge, Zr, Hf, Ta, Nb, and REE are of terrigenous sources. The heavy metals including Bi, Cd, Mn, Cu, Pb, and Zn in the sediments can include those contributed by anthropogenic processes, such as mining and smelting of Pb-Zn ores. Therefore, presenting a scheme for the geochemical backgrounds of the watershed is recommended here for future assessment of the heavy metal contamination in sediments of the watershed.
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Affiliation(s)
- Xiaohong Fang
- Faculty of Resource and Environment Sciences, Hunan Normal University, 410081, Changsha, People's Republic of China
- Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, 410081, Changsha, People's Republic of China
- College of Geography and Tourism, Hengyang Normal University, 421002, Hengyang, People's Republic of China
| | - Bo Peng
- Faculty of Resource and Environment Sciences, Hunan Normal University, 410081, Changsha, People's Republic of China.
- Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, 410081, Changsha, People's Republic of China.
| | - Zhaoliang Song
- Institute of Surface-Earth System Science, Tianjin University, 300072, Tianjin, People's Republic of China
| | - Sicheng Wu
- Faculty of Resource and Environment Sciences, Hunan Normal University, 410081, Changsha, People's Republic of China
- Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, 410081, Changsha, People's Republic of China
| | - Danting Chen
- Faculty of Resource and Environment Sciences, Hunan Normal University, 410081, Changsha, People's Republic of China
- Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, 410081, Changsha, People's Republic of China
| | - Yafang Zhao
- Faculty of Resource and Environment Sciences, Hunan Normal University, 410081, Changsha, People's Republic of China
- Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, 410081, Changsha, People's Republic of China
| | - Jing Liu
- Faculty of Resource and Environment Sciences, Hunan Normal University, 410081, Changsha, People's Republic of China
- Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, 410081, Changsha, People's Republic of China
| | - Yanan Dai
- Faculty of Resource and Environment Sciences, Hunan Normal University, 410081, Changsha, People's Republic of China
- Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, 410081, Changsha, People's Republic of China
| | - Xianglin Tu
- Guangzhou Institute of Geochemistry, Chinese Academy of Science, 510640, Guangzhou, People's Republic of China
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52
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Liu J, Peng A, Deng S, Liu M, Liu G, Li C. Distribution of heavy metals and radionuclides in the sediments and their environmental impacts in Nansha Sea area, South China Sea. MARINE POLLUTION BULLETIN 2021; 166:112192. [PMID: 33744805 DOI: 10.1016/j.marpolbul.2021.112192] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 02/08/2021] [Accepted: 02/18/2021] [Indexed: 06/12/2023]
Abstract
Activity concentrations of radionuclides (238U, 226Ra, 232Th, and 40K) in the sediments of eight sampling stations and heavy metal concentrations (Cr, Co, Ni, Cu, Zn, As, Cd, and Pb) in the sediments of two long cores from Nansha Sea area were obtained by high-purity germanium spectroscopy and inductively coupled plasma atomic emission spectrometry. In a correlation analysis between the radionuclides and heavy metals, 232Th was positively correlated with As and Pb. 238U demonstrated a significant positive correlation with Co, Ni, Cu, Zn, and Cd. 40K was positively correlated with Co, Ni, and Cu. The geo-accumulation index, pollution load index, potential ecological risk index, and multivariate statistical techniques were used to evaluate the pollution degree and possible sources of heavy metals in the sediments. An ecological risk assessment suggested that Cr, Co, Ni, Cu, Zn, Cd, and Pb were primarily derived from natural processes, while the source of As may be related to natural processes and human activities.
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Affiliation(s)
- Jing Liu
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
| | - Anguo Peng
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, China.
| | - Shuang Deng
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
| | - Min Liu
- School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
| | - Guangshan Liu
- College of the Environment and Ecology, Xiamen University, Xiamen 361005, China
| | - Chao Li
- College of the Environment and Ecology, Xiamen University, Xiamen 361005, China
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53
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Carolin C F, Kumar PS, Ngueagni PT. A review on new aspects of lipopeptide biosurfactant: Types, production, properties and its application in the bioremediation process. JOURNAL OF HAZARDOUS MATERIALS 2021; 407:124827. [PMID: 33352424 DOI: 10.1016/j.jhazmat.2020.124827] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/03/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
Nowadays, the worldwide search regarding renewable products from natural resources is increasing due to the toxicity of chemical counterparts. Biosurfactants are surface-active compounds that contain several physiological functions that are used in industries like food, pharmaceutical, petroleum and agriculture. Microbial lipopeptides have gained more attention among the researchers for their low toxicity, efficient action and good biodegradability when compared with other surfactants. Because of their versatile properties, lipopeptide compounds are utilized in the remediation of organic and inorganic pollutants. This review presented a depth evaluation of lipopeptide surfactants in the bioremediation process and their properties to maintain a sustainable environment. Lipopeptide can acts as a replacement to chemical surfactants only if they meet industrial-scale production and low-cost substrates. This review also demonstrated the production of a lipopeptide biosurfactant from a low-cost substrate and depicted plausible techniques to manage the substrate residues to determine its ability in the different applications particularly in the bioremediation process.
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Affiliation(s)
- Femina Carolin C
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai - 603110, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai - 603110, India.
| | - P Tsopbou Ngueagni
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai - 603110, India; Laboratoire de Chimie Inorganique Appliquée, Faculté des Sciences, Université de Yaoundé I, B.P: 812, Yaoundé, Cameroon
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54
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Long X, Liu F, Zhou X, Pi J, Yin W, Li F, Huang S, Ma F. Estimation of spatial distribution and health risk by arsenic and heavy metals in shallow groundwater around Dongting Lake plain using GIS mapping. CHEMOSPHERE 2021; 269:128698. [PMID: 33121802 DOI: 10.1016/j.chemosphere.2020.128698] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/14/2020] [Accepted: 10/18/2020] [Indexed: 06/11/2023]
Abstract
Potable groundwater has become the primary water source for the local population because of the serious pollution of As and heavy metals in the surface water around the Dongting Lake Plain. A comprehensive research on the shallow groundwater was performed in this study via geographical information system (GIS) and geochemical method to evaluate groundwater quality and health risks of shallow groundwater in Dongting Lake Plain. Eighty-seven samples were collected and the content of As and twelve other heavy metals (e.g., Al, Fe, Zn, Cu, Mo, Ni, Mn, Co, Ba, Pb, Cd, and Cr) in the samples were detected by inductively coupled plasma-mass spectrum (ICP-MS) technology. The water pollution situation was assessed using heavy metal contents and evaluation indices, and human health risks were evaluated on the basis of both carcinogenic and noncarcinogenic aspects. Results showed that the shallow groundwater quality is moderately to heavily contaminated and should be considered in some areas of the Li and Xiangjiang River coasts. Several regions have the potential of carcinogenic risks induced by As and the groundwater in some regions may have the risk of Cr carcinogenesis in the wet season. These findings suggested that the potential harm caused by Fe, Zn, Mn, Cr, and As pollution of groundwater, especially As and Cr in wet season, must be considered. The spatio-temporal study on the groundwater quality evaluation may be beneficial to the protection and sustainable development of groundwater resources in Dongting Lake Plain.Summary: Although the overall noncarcinogenic health risk by metals in shallow groundwater of Dongting Lake is low, noncarcinogenic health risks caused by Fe, Zn, Mn, and As exist in some areas.
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Affiliation(s)
- Xiting Long
- Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Institute of Deep Earth Sciences and Green Energy, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, 518060, China; Shenzhen Key Laboratory of Deep Underground Engineering Sciences and Green Energy, Shenzhen University, Shenzhen, 518060, China; The 402 Team, The Bureau of Geology and Mineral Resources Exploration of Hunan, Changsha 410014, China
| | - Fei Liu
- Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Institute of Deep Earth Sciences and Green Energy, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, 518060, China; Shenzhen Key Laboratory of Deep Underground Engineering Sciences and Green Energy, Shenzhen University, Shenzhen, 518060, China.
| | - Xin Zhou
- The 402 Team, The Bureau of Geology and Mineral Resources Exploration of Hunan, Changsha 410014, China
| | - Jing Pi
- The 402 Team, The Bureau of Geology and Mineral Resources Exploration of Hunan, Changsha 410014, China
| | - Wei Yin
- The 402 Team, The Bureau of Geology and Mineral Resources Exploration of Hunan, Changsha 410014, China
| | - Fang Li
- The 402 Team, The Bureau of Geology and Mineral Resources Exploration of Hunan, Changsha 410014, China
| | - Shuping Huang
- School of Geographic Sciences, Xinyang Normal University, Xinyang, 464000, China
| | - Fang Ma
- School of Geographic Sciences, Xinyang Normal University, Xinyang, 464000, China.
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55
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Fan J, Jian X, Shang F, Zhang W, Zhang S, Fu H. Underestimated heavy metal pollution of the Minjiang River, SE China: Evidence from spatial and seasonal monitoring of suspended-load sediments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 760:142586. [PMID: 33071115 DOI: 10.1016/j.scitotenv.2020.142586] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/16/2020] [Accepted: 09/18/2020] [Indexed: 06/11/2023]
Abstract
Previous assessments on rivers in SE China with highly developed economy and enormous population indicate diverse and relatively low particulate heavy metal pollution levels. However, the controlling mechanisms for heavy metal enrichment and transport remain enigmatic. Here, we target a mesoscale mountainous river, the Minjiang River, and obtain grain size, mineralogical and heavy metal concentration (Pb, Cd, Cr, Mn, Mo, Zn, V, Co, Ni, Cu) data from seasonal suspended particulate matter (SPM) near the river mouth, riverbed sediments and SPM samples from mainstream and major tributaries of the river. The results indicate that SPM samples have higher particulate heavy metal concentrations than riverbed sediments collected in pairs. Heavy metal concentrations of Cd, Zn, Cr, V, Co, Ni and Cu are higher in upstream SPM samples than those in downstream regions, whereas Pb, Mn and Mo concentrations don't show this spatial variation. Most heavy metals (e.g., Pb and Zn) show high concentrations in flood seasons and relatively low concentrations in dry seasons, revealing a hydrologic control. However, Cr and Mn show high concentrations in some dry season samples, suggesting incidental anthropogenic input events. The SPM-based pollution assessments using enrichment factor, geoaccumulation index and potential ecological risk index demonstrate that the Minjiang River is moderately to strongly polluted by particulate Pb, Cd, Mo and Zn contaminations and most particulate heavy metals have moderate to considerable potential ecological risks. We contend that transport and discharge of particulate heavy metals by the Minjiang River are controlled by both natural and anthropogenic forcings and the pollution levels are worse than previously known. Our findings suggest that particulate heavy metal discharge by subtropical mountainous rivers is related to sediment types and hydrologic characteristics. Therefore, high-spatiotemporal-resolution investigations on river SPM samples are highly recommended to better evaluate particulate heavy metal pollution levels and aquatic environmental conditions.
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Affiliation(s)
- Jiayu Fan
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Xing Jian
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China.
| | - Fei Shang
- Research Institute of Petroleum Exploration and Development (RIPED), PetroChina, Beijing 100083, PR China
| | - Wei Zhang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Shuo Zhang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Hanjing Fu
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
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56
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Yuan Z, Li Q, Ma X, Han M. Assessment of heavy metals contamination and water quality characterization in the Nanming River, Guizhou Province. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:1273-1286. [PMID: 32910330 DOI: 10.1007/s10653-020-00710-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 08/27/2020] [Indexed: 06/11/2023]
Abstract
The analysis to assess the water quality and potential ecological risks in sediments was carried out by means of the distribution characteristics of nutrient properties and heavy metals in water, and heavy metals in sediments from the Nanming River. The results from nutrient properties demonstrated that the majority of TN and TP exceeded the permissible limit and concentrated within the study area. The concentrations of heavy metal in water were lower than the permissible limits but may pose potential threat to aquatic ecosystems. Based on the potential ecological risk results of heavy metals in sediments, Cd posed risk to ecological environment, and the serious contaminations mainly existed in the center of Guiyang City. The multivariate statistical analyses were used to support the idea that the Upstream Area and Midstream Area were significantly dominated by NH4+, TP, TN and CODMn in water. Furthermore, landscape characteristics and hydrology condition better explained the certain trend of water quality. Finally, identifying relationship between nutrient properties and heavy metals that are key ecological components of ecosystem can potentially aid the advances for restoration of geochemical transformations and give rise to river restoration efforts.
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Affiliation(s)
- Zhenhui Yuan
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550001, People's Republic of China
- Guizhou International Science and Technology Cooperation Base-International Joint Research Centre for Aquatic Ecology, Guiyang, 550001, People's Republic of China
| | - Qiuhua Li
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550001, People's Republic of China.
- Guizhou International Science and Technology Cooperation Base-International Joint Research Centre for Aquatic Ecology, Guiyang, 550001, People's Republic of China.
| | - Xinyang Ma
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550001, People's Republic of China
- Guizhou International Science and Technology Cooperation Base-International Joint Research Centre for Aquatic Ecology, Guiyang, 550001, People's Republic of China
| | - Mengshu Han
- Key Laboratory for Information and Computing Science of Guizhou Province, Guizhou Normal University, Guiyang, 550001, People's Republic of China
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57
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Xiong B, Li R, Johnson D, Luo Y, Xi Y, Ren D, Huang Y. Spatial distribution, risk assessment, and source identification of heavy metals in water from the Xiangxi River, Three Gorges Reservoir Region, China. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:915-930. [PMID: 32535759 DOI: 10.1007/s10653-020-00614-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 06/04/2020] [Indexed: 05/28/2023]
Abstract
Heavy metals (HMs) contamination in rivers has attracted wide concern due to its persistence and potential risks to the natural environment and human health. In this study, eight HMs (As, Hg, Cu, Pb, Ca, Zn, Mn, and Ni) were measured by inductively coupled plasma mass spectrometry in 24 water samples to investigate HMs contamination levels in the Xiangxi River of the Yangtze River basin. A geographic information systems kriging interpolation method was used to reveal the spatial distribution of HMs contamination. The results indicate that most HMs occurred at acceptable levels below the Surface Water Quality Standard (GB 3838-2002), with the highest concentration (23.23 mg kg-1) of Mn being observed at sampling site X20. The values of the potential ecological risk index (RI) suggest that high potential ecological risks were present at sampling sites X1, X3, X4, X14, X16, X17, and X24, which reached moderate risk level. The highest value of RI (279.56) was observed at site X17. HM spatial distributions show that upstream pollution is more severe than downstream. The hazard index was below 1 for all HMs except for Mn, indicating that HMs in Xiangxi River pose a low risk to human health. HM source identification was accomplished using principal component analysis and Pearson's correlation. Cu, Cd, Ni, and Hg originate primarily from agriculture, while Pb, Zn, and As originate primarily from transportation and mining. This research provides a reference on the risks posed by HMs in Xiangxi River and will support efforts to protect and improve water quality in Xiangxi River.
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Affiliation(s)
- Biao Xiong
- College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, 443002, Hubei, China
- Hubei Engineering Technology Research Center for Farmland Environment Monitoring, China Three Gorges University, Yichang, 443002, Hubei, China
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, China Three Gorges University, Yichang, 443002, Hubei, China
| | - Ruiping Li
- College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, 443002, Hubei, China
- Hubei Engineering Technology Research Center for Farmland Environment Monitoring, China Three Gorges University, Yichang, 443002, Hubei, China
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, China Three Gorges University, Yichang, 443002, Hubei, China
| | - David Johnson
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, China Three Gorges University, Yichang, 443002, Hubei, China
| | - Yuhong Luo
- College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, 443002, Hubei, China
- Hubei Engineering Technology Research Center for Farmland Environment Monitoring, China Three Gorges University, Yichang, 443002, Hubei, China
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, China Three Gorges University, Yichang, 443002, Hubei, China
| | - Ying Xi
- College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, 443002, Hubei, China
- Hubei Engineering Technology Research Center for Farmland Environment Monitoring, China Three Gorges University, Yichang, 443002, Hubei, China
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, China Three Gorges University, Yichang, 443002, Hubei, China
| | - Dong Ren
- Hubei Engineering Technology Research Center for Farmland Environment Monitoring, China Three Gorges University, Yichang, 443002, Hubei, China
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, China Three Gorges University, Yichang, 443002, Hubei, China
| | - Yingping Huang
- College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, 443002, Hubei, China.
- Hubei Engineering Technology Research Center for Farmland Environment Monitoring, China Three Gorges University, Yichang, 443002, Hubei, China.
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, China Three Gorges University, Yichang, 443002, Hubei, China.
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58
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Trace Element Contamination in One of the Yangtze Tributaries (Hunan, China)—Source Review and Potential Release from Sediments. WATER 2021. [DOI: 10.3390/w13030271] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Spatio-temporal distribution and leachability of some trace elements (TE) were investigated in sediments of the Xiangjiang River, tributary of the Yangtze River. Based on data collected during 2015–2017, a literature review and geoaccumulation indexes, the pollution level was the highest for Cd, Sb and Hg (Igeo > 3). Over the period reviewed, the TE contamination level displayed almost no temporal variation but an obvious spatial distribution. The most upstream contamination hotspot (Cd > Cr > As, Cu, Pb, Zn > Hg, Sb) was the Songbai section. This hotspot did not spread further downstream. The second hotspot identified was the Zhuzhou–Xiangtan section, impacted by Cd > Hg, Pb, Zn > Cu, with the Zhuzhou area being particularly highly impacted by Pb and Zn. A 30-day leaching experimental protocol under aerobic and anaerobic conditions was carried out to access TE mobility. Low percentages of TE released were calculated, showing that the TE fate mostly depends on the stability of bearing phases under specific physicochemical and microbial conditions. In this case, the studied sediments can be an important sink for these TE. However, some environmental issues have to be considered as some leachate concentrations of contaminants (As, Cr, Cu and U) released into water exceed freshwater aquatic life criteria.
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Huang Z, Zheng S, Liu Y, Zhao X, Qiao X, Liu C, Zheng B, Yin D. Distribution, toxicity load, and risk assessment of dissolved metal in surface and overlying water at the Xiangjiang River in southern China. Sci Rep 2021; 11:109. [PMID: 33420280 PMCID: PMC7794442 DOI: 10.1038/s41598-020-80403-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 12/17/2020] [Indexed: 12/17/2022] Open
Abstract
Metal pollution in drinking water source has been under scrutiny as it seriously affects human health. This work examined 12 dissolved metals in the surface and overlying water of the Xiangjiang River, an important drinking water source in southern China, and characterized their distribution, identified their possible sources, assessed their toxicity load, and determined their potential ecological and health risk. No significant difference was found in the metal concentration between surface and overlying water. The average metal concentration fell in the order of Mg > Mn > Ba > Fe > Zn > As > Sb > Ni > Cd > V > Cr > Co, and all was lower than the safety threshold in the drinking water guideline of China. Anthropogenic activities were found to be the main source of metals from correlation analysis, principal component analysis (PCA), and cluster analysis (CA). According to the total heavy metal toxicity load (HMTL), 98.20%, 71.54%, 68.88%, and 7.97% of As, Cd, Sb, and Mn should be removed from the surface water to ensure safety. Most water samples from the surveyed area were found to have high ecological risk as was measured by the ecological risk index (RI). Health risk assessment showed that children are more susceptible than adults to the non-carcinogenic risk of dissolved metals, and the potential carcinogenic risk (CR) of As and Cd should be addressed. The results provide guidance for controlling the metal pollution of the Xiangjiang River and improving its quality as a drinking water source.
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Affiliation(s)
- Zhifeng Huang
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.,Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Saisai Zheng
- Nanchang Institute of Technology, Nanchang, China
| | - Yan Liu
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Xingru Zhao
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Xiaocui Qiao
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Chengyou Liu
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Binghui Zheng
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Daqiang Yin
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
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Ren J, Hao J, Tao L. Concentrations, spatial distribution, and pollution assessment of heavy metals in surficial sediments from upstream of Yellow River, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:2904-2913. [PMID: 32894444 DOI: 10.1007/s11356-020-10349-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 08/03/2020] [Indexed: 05/25/2023]
Abstract
Surface sediments were collected from 122 sites in the upstream of the Yellow River, China. The concentration of Fe, Mn, Cu, Ni, Zn, Cr, Pb, and Cd in sediments was investigated to explore the spatial distribution based on statistics and interpolation method. The results suggested that the concentrations of heavy metals were lower than potential effect levels (PEL). The samples above threshold effect level (TEL) for Pb and Zn were less than 10%, while almost 50% of samples for Ni exceeded PEL. Pb and Zn in sediments performed little or no adverse effects on the aquatic ecosystems. Higher concentrations of all heavy metals occurred in Qinghai and Gansu sections; the concentrations of Cu, Ni, and Zn were significantly higher than the Inner Mongolia section. Lower concentration of Fe, Mn, Cu, Ni, and Zn appeared in Qinghai section; the concentrations of Fe, Mn, Cr, and Pb manifested relatively steady and similar distributions and approximately decreasing tendency along the upstream of Yellow River.
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Affiliation(s)
- Jun Ren
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, People's Republic of China.
- Lanzhou Hanxing Environmental Protection Co., Ltd., Lanzhou, 730070, China.
- Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou, 730070, China.
| | - Jianxiu Hao
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, People's Republic of China
- Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou, 730070, China
| | - Ling Tao
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, People's Republic of China
- Lanzhou Hanxing Environmental Protection Co., Ltd., Lanzhou, 730070, China
- Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou, 730070, China
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Wang L, Xu Y, Wen H, Tang M, Zhao G, Han Q, Xu X, Ying M, Hu Z, Xu H. Contamination evaluation and source identification of heavy metals in sediments near outlet of Shekou industrial district of Shenzhen City. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:772. [PMID: 33219420 DOI: 10.1007/s10661-020-08755-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 11/12/2020] [Indexed: 06/11/2023]
Abstract
Sediment samples in this study were taken from five typical sites near the outlet of Shekou industrial district of Shenzhen City, China. The concentrations of seven elements including Cr, Cu, Cd, Pb, Hg, Zn, and As were determined respectively by atomic absorption spectrometry or atomic fluorescence spectrometry. The pollution degrees of the seven elements were assessed with the contamination factor and potential ecological risk index respectively, and their different sources were identified using multivariate statistical methods. The calculated contamination factors of these elements indicated that the sediments were at least moderately polluted by all the surveyed elements except As. The values of potential ecological risk indexes obtained decreased as the following order: Cd > Hg > Cu > As > Pb > Zn > Cr, and suggested that Cd and Hg were respectively at high and considerable environmental health risks. In addition, multivariate statistical analyses indicated that Cd, Hg, Cu, and Zn were most likely from the waste of electroplating, metal, and battery industries at Shekou industrial district, while Pb and As originated from both natural processes and anthropogenic activities along the bank of Pear River such as coal transportation and combustion, glass manufacturing, and painting, and Cr came mostly from Cr-related industries especially leather tanning within Shenzhen City. This study provided useful reference information about heavy metal contamination in the sediments in the estuarine and coastal areas with rapid urbanization and industrialization, and should be very helpful for the local governments to make relevant policies and strategies of heavy metal contamination control and management in developing countries.
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Affiliation(s)
- Limin Wang
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Yang Xu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
- School of Science and Engineering, Chinese University of Hong Kong, Shenzhen, 518172, China
| | - Haibo Wen
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
- Bao'an No.1 Foreign Language School, Shenzhen, 518128, China
| | - Min Tang
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Guangyao Zhao
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Qingguo Han
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Xu Xu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Ming Ying
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Zhangli Hu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Hong Xu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China.
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62
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Afolagboye LO, Ojo AA, Talabi AO. Evaluation of soil contamination status around a municipal waste dumpsite using contamination indices, soil-quality guidelines, and multivariate statistical analysis. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03678-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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63
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Wang M, Song G, Zhang C, Zhai F, Wang W, Song Z. Chemical fractionation and risk assessment of surface sediments in Luhun Reservoir, Luoyang city, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:35319-35329. [PMID: 32592051 DOI: 10.1007/s11356-020-09512-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 05/28/2020] [Indexed: 06/11/2023]
Abstract
To understand the potential risks of heavy metals, including their bioavailability and toxicity, 15 surface sediment samples were collected from Luhun Reservoir in Luoyang city, China. Total concentrations and chemical fractions of Cd, Cr, Cu, Ni, Pb, and Zn were analyzed. Various rating methods were used to evaluate the degree, risk, and toxicity of the heavy metal pollution. Results showed that Cd and Pb were preferentially associated with exchangeable (55.77-69.76%) and reducible (53.54-69.43%) fractions, respectively, and therefore exhibited high potential availability. Cr (57.14-86.56%) and Ni (32.21-72.77%) occurred primarily in the residual fraction. Metal concentrations in the effective fraction of the sediment decreased in the order: Cd (96.32%) > Pb (91.61%) > Cu (64.54%) > Zn (57.23%) > Ni (41.51%) > Cr (21.68%). Risk assessment indicated that the risk for Cd is extremely high (62.96%); Cu, Pb, and Zn are ranked as medium risk. Based on the potential ecological risk index, these metals (especially Cd) showed higher potential risk near the dam region. Toxic unit values (2.89-6.05) in more than 60% of sediment sites exceeded a value of 4, and Pb had a relatively higher contribution (1.06-2.65). Cd and Pb are the main contaminants in sediments of Luhun Reservoir and should be paid more attention in the future.
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Affiliation(s)
- Mengmeng Wang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 10085, People's Republic of China
- School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, 450046, People's Republic of China
| | - Gangfu Song
- School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450046, People's Republic of China.
| | - Chao Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 10085, People's Republic of China.
| | - Fujie Zhai
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 10085, People's Republic of China
- School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, 450046, People's Republic of China
| | - Wenchuan Wang
- School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, 450046, People's Republic of China
| | - Zhixin Song
- School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450046, People's Republic of China
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64
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Yang W, Zhou H, Gu J, Liao B, Zhang J, Wu P. Application of rapeseed residue increases soil organic matter, microbial biomass, and enzyme activity and mitigates cadmium pollution risk in paddy fields. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 264:114681. [PMID: 32387674 DOI: 10.1016/j.envpol.2020.114681] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 03/25/2020] [Accepted: 04/25/2020] [Indexed: 05/10/2023]
Abstract
Rapeseed (Brassica napus L.) is a winter oil crop and biodiesel resource that has been widely cultivated in the southern part of China. Applying rapeseed residue (RSD) to summer rice fields is a common agricultural practice under rice-rapeseed double cropping systems. However, in Cd-contaminated paddy fields, the influence mechanisms of this agricultural practice on the migration and distribution of Cd fractions in soil are not clear. Therefore, a field experiment was carried out to analyse the changes in soil pH, organic matter (OM), microbial biomass carbon (MBC) and nitrogen (MBN), enzyme activity (urease (UA), acid phosphatase (ACP), and dehydrogenase (DH)), Cd distribution fractions, and Cd concentration in rice tissues after RSD application. The results showed that RSD treatment significantly increased the soil OM and MBC concentrations and UA, ACP, and DH activities, decreased the soil acetic acid-extractable fraction of Cd (ACI-Cd), and increased the reducible fraction of Cd (Red-Cd). The formation of stable organic complexes and chelates upon application of RSD is a result of the high affinity of Cd for soil OM. The activities of soil ACP, DH and MBC can well reflect Cd ecotoxicity in soil, particularly the DH activity. In addition, RSD application was helpful in inducing iron plaque formation. The "barrier" effect of iron plaque resulted in reduced Cd accumulation in different tissues of rice. The health risk of rice consumption also decreased as a result of RSD application; it decreased by 0.89-30.0% and 24.1-51.7% in the two tested fields. Overall, the application of RSD was increased soil OM, microbial biomass, and enzyme activity, and these changes was instrumental in reduce the risk of cadmium pollution in rice fields.
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Affiliation(s)
- Wentao Yang
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China; College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.
| | - Hang Zhou
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China.
| | - Jiaofeng Gu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China.
| | - Bohan Liao
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China.
| | - Jia Zhang
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China.
| | - Pan Wu
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China; Key Laboratory of Geological Resources and Environment, Ministry of Education, Guizhou University, Guiyang, 50025, China.
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65
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Cui D, Zhang P, Li H, Zhang Z, Song Y, Yang Z. The dynamic effects of different inorganic arsenic species in crucian carp (Carassius auratus) liver during chronic dietborne exposure: Bioaccumulation, biotransformation and oxidative stress. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 727:138737. [PMID: 32335454 DOI: 10.1016/j.scitotenv.2020.138737] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/11/2020] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
Inorganic arsenic (iAs) is highly toxic to aquatic species, but the chronic effect of iAs on fish following dietborne exposure is still unclear. In this study, freshwater fish crucian carp (Carassius auratus) was exposed to iAs [arsenite (AsIII) and arsenate (AsV)] for 40 days through dietary exposure. The bioaccumulation and biotransformation of arsenic in the main metabolic organ, liver, were measured. The oxidative stress responses to iAs exposure in liver were analyzed to be linked to arsenic biotransformation, especially methylation. In both AsIII and AsV groups, the total As contents gradually increased during the exposure and then fleetly decreased at the end of exposure (40 d). Arsenobetaine was found to be the predominated As species (34-66%) and the fraction remained on an increasing trend, while the inorganic As percentages decreased 84-91% during the 40-day exposure, suggesting that the capability of As biotransformation increased to acclimate iAs during chronic dietborne exposure. Both the activities of the enzymatic antioxidants (superoxide dismutase and catalase) and the level of the nonenzymatic antioxidant (glutathione) increased initially and then decreased, thus lowering the malondialdehyde levels and displaying a typical antioxidant defense mechanism. The opposite correlations were observed between arsenic secondary methylation index and the malondialdehyde level in different iAs treatment. This indicated that the As dimethylation played an significant role toward oxidative damage; the toxic action of As dimethylation was dependent upon the parent iAs species at the initial stage of exposure. Therefore, the effectiveness of the detoxification relied on both the biomethylation rate of As and the anti-oxidation ability based on nonenzymatic antioxidant and enzymatic antioxidant.
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Affiliation(s)
- Di Cui
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha 410083, PR China
| | - Peng Zhang
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Haipu Li
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha 410083, PR China.
| | - Zhaoxue Zhang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha 410083, PR China
| | - Yang Song
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha 410083, PR China
| | - Zhaoguang Yang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha 410083, PR China.
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66
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Concentrations and sources of heavy metals in shallow sediments in Lake Bafa, Turkey. Sci Rep 2020; 10:11782. [PMID: 32678245 PMCID: PMC7366620 DOI: 10.1038/s41598-020-68833-2] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 06/30/2020] [Indexed: 12/03/2022] Open
Abstract
The concentrations and sources of heavy metals in shallow sediments in Lake Bafa were investigated. The concentrations of nine heavy metals and the total organic carbon content in sediment samples were determined for between Summer 2015 and Spring 2016. The mean contents of heavy metals were in decreasing order Fe > Mn > Ni > Cr > Zn > Cu > Co > Pb > Cd. Sediment quality guidelines indicate that Cr, Cu, and Ni pose a considerable threat to the aquatic ecosystem in Lake Bafa. Site L3 was found to be contaminated with Cd, Cr, and Ni, and the pollution load indices suggest that these metals had anthropogenic sources. The sediment samples were notably enriched with Cd and Ni. There is no consistent trend for seasonal effect in terms of the sample locations. However, at all sampling points, an increase in heavy metal concentrations was observed in the autumn. The results of a multivariate analysis indicate that the sources of Co, Cu, Fe, Mn, Pb, and Zn were all natural, the sources of Cd were anthropogenic, and the sources of Ni and Cr were both anthropogenic and natural. These results highlight that Cd, Cr, and particularly Ni represent the most serious threat in terms of heavy metal pollution in the ecosystem of the lake.
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67
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Zhang Z, Zhang N, Li H, Lu Y, Yang Z. Potential health risk assessment for inhabitants posed by heavy metals in rice in Zijiang River basin, Hunan Province, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:24013-24024. [PMID: 32304056 DOI: 10.1007/s11356-020-08568-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 03/23/2020] [Indexed: 05/28/2023]
Abstract
The contents of total arsenic (tAs), inorganic arsenic (iAs), Cd, Cr, Cu, Mn, Ni, Pb, Sb, and Zn in 135 rice grain samples from Zijiang River basin were determined, and the probabilistic distribution of noncarcinogenic and carcinogenic risks associated with ingesting locally produced rice was determined by Monte Carlo simulation. Further, multivariate statistical analysis was used to analyze the potential sources of the heavy metals in rice grains. The average concentrations of the heavy metals in rice grains were ranked as follows: Mn (17.314 mg/kg) > Zn (16.043 mg/kg) > Cu (2.013 mg/kg) > Ni (1.332 mg/kg) > Cr (0.571 mg/kg) > Cd (0.283 mg/kg) > tAs (0.241 mg/kg) > Pb (0.145 mg/kg) > Sb (0.027 mg/kg). These heavy metals were significantly enriched in some rice grain samples. The analysis of potential sources indicated that As, Pb, Sb, and Zn were mainly derived from mining and smelting and agricultural activities; Cd, Cu, Mn, and Ni were mainly derived from the agricultural activities; Cr were mainly derived from the natural source. The results of Monte Carlo simulation indicated that ingestion of rice grown in the area may pose health risks for children, adult males, and adult females. The noncarcinogenic risks were mainly from As, Cd, Mn, Ni, and Sb, and the carcinogenic risk was mainly from As, Cd, and Ni. This study could provide basic information for land management and rice intake in the study area.
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Affiliation(s)
- Zhaoxue Zhang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha, 410083, China
| | - Nan Zhang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha, 410083, China
| | - Haipu Li
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha, 410083, China.
| | - Yi Lu
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha, 410083, China
| | - Zhaoguang Yang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha, 410083, China.
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68
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Mudhoo A, Ramasamy DL, Bhatnagar A, Usman M, Sillanpää M. An analysis of the versatility and effectiveness of composts for sequestering heavy metal ions, dyes and xenobiotics from soils and aqueous milieus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 197:110587. [PMID: 32325327 DOI: 10.1016/j.ecoenv.2020.110587] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/13/2020] [Accepted: 04/01/2020] [Indexed: 06/11/2023]
Abstract
The persistence and bioaccumulation of environmental pollutants in water bodies, soils and living tissues remain alarmingly related to environmental protection and ecosystem restoration. Adsorption-based techniques appear highly competent in sequestering several environmental pollutants. In this review, the recent research findings reported on the assessments of composts and compost-amended soils as adsorbents of heavy metal ions, dye molecules and xenobiotics have been appraised. This review demonstrates clearly the high adsorption capacities of composts for umpteen environmental pollutants at the lab-scale. The main inferences from this review are that utilization of composts for the removal of heavy metal ions, dye molecules and xenobiotics from aqueous environments and soils is particularly worthwhile and efficient at the laboratory scale, and the adsorption behaviors and effectiveness of compost-type adsorbents for agrochemicals (e.g. herbicides and insecticides) vary considerably because of variabilities in structure, topology, bond connectivity, distribution of functional groups and interactions of xenobiotics with the active humic substances in composts. Compost-based field-scale remediation of environmental pollutants is still sparse and arguably much challenging to implement if, furthermore, real-world soil and water contamination issues are to be addressed effectively. Hence, significant research and process development efforts should be promptly geared and intensified in this direction by extrapolating the lab-scale findings in a cost-effective manner.
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Affiliation(s)
- Ackmez Mudhoo
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, 80837, Mauritius.
| | - Deepika Lakshmi Ramasamy
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology, Sammonkatu 12, FI-50130, Mikkeli, Finland
| | - Amit Bhatnagar
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Muhammad Usman
- PEIE Research Chair for the Development of Industrial Estates and Free Zones, Center for Environmental Studies and Research, Sultan Qaboos University, Al-Khoud 123, Muscat, Oman
| | - Mika Sillanpää
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam; Faculty of Environment and Chemical Engineering, Duy Tan University, Da Nang, 550000, Viet Nam; School of Civil Engineering and Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, 4350, QLD, Australia.
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69
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Cui D, Zhang P, Li H, Zhang Z, Luo W, Yang Z. Biotransformation of dietary inorganic arsenic in a freshwater fish Carassius auratus and the unique association between arsenic dimethylation and oxidative damage. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:122153. [PMID: 32044628 DOI: 10.1016/j.jhazmat.2020.122153] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/04/2020] [Accepted: 01/20/2020] [Indexed: 05/05/2023]
Abstract
The metabolic process and toxicity mechanism of dietary inorganic arsenic (iAs) in freshwater fish remain unclear to date. The present study conducted two iAs [arsenate (As(V)) and arsenite (As(III))] dietary exposures in freshwater fish crucian carp (Carassius auratus). The fish were fed on As supplemented artificial diets at nominal concentrations of 50 and 100 μg As(III) or As(V) g-1 (dry weight) for 10 d and 20 d. We found that the liver, kidney, spleen, and intestine of fish accumulated more As in As(V) feeding group than that in As(III), while the total As levels in muscle were similar between As(V) and As(III) group at the end of exposure. Reduction of As(V) to As(III) and oxidation of As(III) to As(V) occurred in fish fed with As(V) and As(III), respectively, indicating that toxicity of iAs was likely elevated or reduced when iAs was absorbed by fish before entering into human body through diet. Biomethylation to monomethylarsonic acid and dimethylarsinic acid and transformation to arsenocholine and arsenobetaine were also found in the fish. The linear regression analysis showed a positive correlation between secondary methylation index and the malondialdehyde content in tissues, highlighting the vital role of arsenic dimethylation in the oxidative damages in fish.
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Affiliation(s)
- Di Cui
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China
| | - Peng Zhang
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Haipu Li
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha, 410083, PR China.
| | - Zhaoxue Zhang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China
| | - Wenbao Luo
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China
| | - Zhaoguang Yang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha, 410083, PR China.
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70
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Gu C, Zhang Y, Peng Y, Leng P, Zhu N, Qiao Y, Li Z, Li F. Spatial Distribution and Health Risk Assessment of Dissolved Trace Elements in Groundwater in southern China. Sci Rep 2020; 10:7886. [PMID: 32398694 PMCID: PMC7217908 DOI: 10.1038/s41598-020-64267-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Accepted: 04/13/2020] [Indexed: 11/23/2022] Open
Abstract
To understand the groundwater environmental quality and the impact of trace elements in the construction of urban agglomeration in China, this study collected 58 groundwater samples from the core area of the Chang-Zhu-Tan urban agglomeration (Changsha, Zhuzhou, Xiangtan) and quantitatively analyzed the content of 13 dissolved trace element and their spatial distribution characteristics. The health risk assessment model was further used to evaluate the human health risk caused by trace element pollution in groundwater. It was observed that Ba had the highest average concentration (0.28 mg·L−1), whereas Cd had the lowest (2.1 × 10−5 mg·L−1). Compared with China’s groundwater environmental quality standard, the exceeding rates of Se, Mn, Zn, and Ni concentrations were 37.93%, 17.24%, 1.72% and 1.72%, respectively. Ba, Cd, Co, Cr, Cu, Fe, Mo, and Pb did not exceed the corresponding standards. The 13 trace elements were distributed in a scattered pattern in space and the trace elements in both banks of the Xiang River, Zhuzhou, Weishui River and surrounding areas were relatively high. Health risk assessments showed that the carcinogenic risk values of Cd, Cr, and Pb and the health risk values of 10 non-carcinogenic elements were less than the corresponding maximum acceptable risk level. The health risks associated with non-carcinogenic substances through ingestion were higher than those associated with dermal absorption. Among the non-carcinogenic substances, Ba and Mn posed the greatest health risks. With respect to drinking water exposure, Cr had the highest carcinogenic risk, followed by Pb. Furthermore, Cd had the lowest carcinogenic risk. This study recommended that continuous monitoring of Ba, Mn, and Cr in groundwater should be practiced by assessing the risk of these elements in the Chang-Zhu-Tan urban agglomeration.
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Affiliation(s)
- Congke Gu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, No. 11A, Datun Road, Chaoyang District, Beijing, 100101, P. R. China.,University of Chinese Academy of Sciences, No. 19A, Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Yan Zhang
- Northwest University, 229 North Taibai Road, Xi'an, 710069, Shaanxi Province, P. R. China
| | - Yu Peng
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, No. 11A, Datun Road, Chaoyang District, Beijing, 100101, P. R. China.,University of Chinese Academy of Sciences, No. 19A, Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Peifang Leng
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, No. 11A, Datun Road, Chaoyang District, Beijing, 100101, P. R. China.,University of Chinese Academy of Sciences, No. 19A, Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Nong Zhu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, No. 11A, Datun Road, Chaoyang District, Beijing, 100101, P. R. China
| | - Yunfeng Qiao
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, No. 11A, Datun Road, Chaoyang District, Beijing, 100101, P. R. China.,University of Chinese Academy of Sciences, No. 19A, Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Zhao Li
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, No. 11A, Datun Road, Chaoyang District, Beijing, 100101, P. R. China.,University of Chinese Academy of Sciences, No. 19A, Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Fadong Li
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, No. 11A, Datun Road, Chaoyang District, Beijing, 100101, P. R. China. .,University of Chinese Academy of Sciences, No. 19A, Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China.
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Liu L, Ouyang W, Wang Y, Tysklind M, Hao F, Liu H, Hao X, Xu Y, Lin C, Su L. Heavy metal accumulation, geochemical fractions, and loadings in two agricultural watersheds with distinct climate conditions. JOURNAL OF HAZARDOUS MATERIALS 2020; 389:122125. [PMID: 31978823 DOI: 10.1016/j.jhazmat.2020.122125] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 06/10/2023]
Abstract
The main aim of this study was to explore the effects of climate conditions on the transport and transformation of heavy metals. Sedimentary geochemical analysis and watershed modeling were used to investigate the distinctions between heavy metal pollution under different climate conditions. The results showed that the average concentrations of Cu, Cd, and Pb in sediments of the subtropical watershed (36.64, 0.60, and 133.69 mg/kg, respectively) were higher than those of the temperate watershed (26.58, 0.19, and 23.17 mg/kg, respectively) because of surface runoff-induced heavy metal loadings under higher precipitation. Also, the labile fractions, which mainly originated from anthropogenic sources, showed higher percentages in the subtropical watershed (67.84-91.33%), thereby indicating that the transport of heavy metals was promoted by surface runoff. Moreover, higher percentages of acid-soluble fractions of Cu and Pb (23.55-33.60%) in the subtropical watershed suggested that higher temperatures accelerated the transformation of heavy metal fractions, thus contributing to the transportation of heavy metals. Overall, climate conditions were the dominant factors for the differences between the subtropical and temperate watersheds. The results of this study suggest that the effects of climate conditions on the transport, enrichment, and bioavailability of heavy metals are of great significance. Such effects should therefore be the focus of future studies.
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Affiliation(s)
- Lianhua Liu
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China
| | - Wei Ouyang
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China.
| | - Yidi Wang
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China
| | - Mats Tysklind
- Environmental Chemistry, Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
| | - Fanghua Hao
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China
| | - Hongbin Liu
- Key Laboratory of Nonpoint Source Pollution Control, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xin Hao
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China
| | - Yixue Xu
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China
| | - Chunye Lin
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China
| | - Liya Su
- School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China
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He X, Min X, Peng T, Ke Y, Zhao F, Sillanpää M, Wang Y. Enhanced adsorption of antimonate by ball-milled microscale zero valent iron/pyrite composite: adsorption properties and mechanism insight. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:16484-16495. [PMID: 32124299 DOI: 10.1007/s11356-020-08163-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 02/19/2020] [Indexed: 06/10/2023]
Abstract
Ball-milling is considered as an economical and simple technology to produce novel engineered materials. The ball-milled microscale zero valent iron/pyrite composite (BM-ZVI/FeS2) had been synthesized through ball-milling technology and applied for highly efficient sequestration of antimonate (Sb(V)) in aqueous solution. BM-ZVI/FeS2 exhibited good Sb(V) removal efficiency (≥ 99.18%) at initial concentration less than 100 mg Sb(V)/L. Compared to ball-milled zero valent iron (ZVI) and pyrite (FeS2), BM-ZVI/FeS2 exhibited extremely higher removal efficiency due to the good synergistic adsorption effect. BM-ZVI/FeS2 showed efficient removal performance at broad pH (2.6-10.6). Moreover, the coexisting anions had negligible inhibition influence on the Sb(V) removal. The antimony mine wastewater can be efficiently remediated by BM-ZVI/FeS2, and the residual Sb(V) concentrations (< 0.96 μg/L) can meet the mandatory discharge limit in drinking water (5 μg Sb/L). Experimental and model results demonstrated that endothermic reaction and chemisorption were involved in Sb(V) removal by BM-ZVI/FeS2. The XRD and XPS analyses confirmed that the complete corrosion of ZVI occurred on BM-ZVI/FeS2 after Sb(V) adsorption, resulting in the enhanced Sb(V) sequestration. Mechanism analyses showed that the excellent removal performance of BM-ZVI/FeS2 was ascribed to the high coverage of iron (hydr)oxide oxidized from ZVI. Because of the advantages of economical cost, high Sb(V) removal capacity and easy availability, BM-ZVI/FeS2 offers a promising adsorbent for Sb(V) remediation.
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Affiliation(s)
- Xingyu He
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
| | - Xiaobo Min
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China
| | - Tianyu Peng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
| | - Yong Ke
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China.
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China.
| | - Feiping Zhao
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China.
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China.
- Department of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12, 50130, Mikkeli, Finland.
| | - Mika Sillanpää
- Department of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12, 50130, Mikkeli, Finland
| | - Yunyan Wang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China
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73
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Li R, Tang X, Guo W, Lin L, Zhao L, Hu Y, Liu M. Spatiotemporal distribution dynamics of heavy metals in water, sediment, and zoobenthos in mainstream sections of the middle and lower Changjiang River. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 714:136779. [PMID: 31991268 DOI: 10.1016/j.scitotenv.2020.136779] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/16/2020] [Accepted: 01/17/2020] [Indexed: 06/10/2023]
Abstract
Water, sediment, and zoobenthos are crucial carriers and storage media for heavy metal migration and transformation. The distribution characteristics of heavy metals in water, sediment, and zoobenthos can reflect their pollution status and potential influences on the health of aquatic ecosystems. On the basis of monitoring data related to Cu, Zn, Pb, Cd, Ni, Mn, Hg, and As in mainstream water, surface sediment, and zoobenthos at eight sections-from Wuhan to Shanghai-of the Changjiang River (also known as the Yangtze River) and historical monitoring data on heavy metal distributions in different environmental media of the Changjiang River since the 1980s, this study undertook systematically analyzed the spatiotemporal distribution dynamics, pollution levels, and corresponding environmental risks related to heavy metals in water, sediment, and biota, and examined the effects of pollution source variations and water and sediment regimes on heavy metal distribution. Heavy metal concentrations in the waters were much lower than the water quality threshold of Grade III of the Chinese Surface Water Environmental Quality Standard (GB3838-2002); the concentrations of different heavy metals were irregularly distributed and varied significantly along the river mainstream; Cu, Cd, Zn, and Pb concentrations in sediment all exceeded their respective critical effect concentrations and exposed the ecosystem to pollution risks; the pollution levels of and ecosystem health risks posed by Zn and Cu in zoobenthos were high, with pollution concentrations ranked as shrimp > snails > crabs. In general, heavy metal concentrations in the three environmental mediums were ranked as sediment > zoobenthos > water. Finally, comparison with historical monitoring data revealed increasing Cd and Hg concentrations, with the average heavy metal concentration in sediment reaching its maximum value in the 2000s in the middle and lower reaches of the Changjiang River, which are subjected to the combined effect of pollutant emissions and changing water and sediment regimes.
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Affiliation(s)
- Rui Li
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan 430010, China.
| | - Xianqiang Tang
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan 430010, China.
| | - Weijie Guo
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan 430010, China
| | - Li Lin
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan 430010, China
| | - Liangyuan Zhao
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan 430010, China
| | - Yuan Hu
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan 430010, China
| | - Min Liu
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan 430010, China
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74
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Li M, Zhang Q, Sun X, Karki K, Zeng C, Pandey A, Rawat B, Zhang F. Heavy metals in surface sediments in the trans-Himalayan Koshi River catchment: Distribution, source identification and pollution assessment. CHEMOSPHERE 2020; 244:125410. [PMID: 31790989 DOI: 10.1016/j.chemosphere.2019.125410] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/06/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
Rivers flowing across the Himalayas are important water resources and deliver large amounts of sediment to regional and downstream ecosystems. However, the geochemistry of Himalayan river sediments has been less studied. Surface sediment samples collected from a typical trans-Himalayan river, the Koshi River (KR), were used to investigate the distribution, pollution status and potential sources of heavy metals. Heavy metals did not show significant spatial differences between the upstream and downstream areas of the river, but Cd and Pb displayed higher values in the upstream area. The average heavy metal concentrations in the KR sediments are comparable to the natural background values and are lower than the sediment guidelines. Pollution assessment using the geo-accumulation index (Igeo), enrichment factor (EF) and pollution load index (PLI) suggested negligible anthropogenic disturbances except for slight contamination by Cd, Pb and Cu at a few sites. Principal component analysis revealed that Cr, Co, Ni and Zn were primarily from the parent rock and that Cu, Cd and Pb were derived from both natural and anthropogenic sources. Despite contrasting environmental settings and human activities in the upper and lower reaches of the river, the heavy metals concentrations in the KR sediments showed consistency with natural backgrounds and negligible contamination. The geochemistry of river sediments is a useful indicator of environmental changes, and long-term observations of the geochemistry of trans-Himalayan river sediments are needed to understand the impacts of intensified climate change and human activities on the Himalayan environment.
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Affiliation(s)
- Mingyue Li
- Key Laboratory of Tibetan Environmental Changes and Land Surface Process, Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS), Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qianggong Zhang
- Key Laboratory of Tibetan Environmental Changes and Land Surface Process, Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS), Beijing, 100101, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, 100101, China.
| | - Xuejun Sun
- Key Laboratory of Tibetan Environmental Changes and Land Surface Process, Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS), Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kabita Karki
- Key Laboratory of Tibetan Environmental Changes and Land Surface Process, Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS), Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chen Zeng
- Key Laboratory of Tibetan Environmental Changes and Land Surface Process, Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS), Beijing, 100101, China
| | - Aastha Pandey
- Key Laboratory of Tibetan Environmental Changes and Land Surface Process, Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS), Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Bakhat Rawat
- Key Laboratory of Tibetan Environmental Changes and Land Surface Process, Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS), Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fan Zhang
- Key Laboratory of Tibetan Environmental Changes and Land Surface Process, Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS), Beijing, 100101, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
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75
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Li K, Cui S, Zhang F, Hough R, Fu Q, Zhang Z, Gao S, An L. Concentrations, Possible Sources and Health Risk of Heavy Metals in Multi-Media Environment of the Songhua River, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17051766. [PMID: 32182762 PMCID: PMC7084879 DOI: 10.3390/ijerph17051766] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 03/01/2020] [Accepted: 03/05/2020] [Indexed: 12/17/2022]
Abstract
Heavy metal pollution in the river environment has been a source of widespread interest due to potential threats to human health and ecosystem security. Many studies have looked at heavy metal pollution in the context of single source-pathway-receptor relationships, however few have sought to understand pollution from a more wholistic multi-media perspective. To investigate potential risks in a more wholistic way, concentrations of six heavy metals (Cd, Cr, Ni, Cu, Zn and Pb) were detected in multi-media (water, sediment and riparian soil) collected from 14 sampling sites in the main stream of the Songhua River. Chemical analyses indicated that the average concentration of heavy metals in water followed: Zn > Cr > Cu > Pb > Ni > Cd, with a different trend observed in sediments and riparian soil: Zn > Cr > Ni > Pb > Cu > Cd. The potential risk was evaluated using the heavy metal pollution index (HPI), Nemerow pollution index (PN), hazard index (HI) and carcinogenic risk (CR) metrics. Results showed that all HPI values were lower than the critical level of 100 indicating that the levels of these targeted heavy metals were within drinking water safety limits. The PN indicated that both sediment (2.64) and soil (2.95) could be considered "moderately polluted", with Cd and Zn providing the most significant contributions. A human health risk assessment suggested that the non-carcinogenic risks were within acceptable levels (HI < 1), as was the cancer risk associated with dermal adsorption (CR <10-6). However, the CR associated with ingestion exposure (4.58 × 10-6) exceeded the cancer risk threshold (10-6) indicative of elevated cancer incidence in exposed populations. Health-risk estimates were primarily associated with Cd in the Songhua River. Source apportionment was informed by Pearson correlation analysis coupled with principal component analysis (PCA) which indicated that Cu was mainly derived from natural (geogenic) sources; Cr and Ni were associated with industrial emissions; Pb might be derived from agricultural and transportation sources; Zn might be from industrial, agricultural activities and transportation; while Cd is likely from industrial and agricultural emissions. The source apportionment information could provide the basis for a risk-management strategy focused on reducing Cd and Zn emissions to the riverine environment. Results from this study will provide the scientific knowledge that is needed for measuring and controlling heavy metals sources and pollution characteristics, and identifying the potential cancer risk with different exposure pathways, as well as making effective environmental management policies at catchment or regional scales.
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Affiliation(s)
- Kunyang Li
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; (K.L.); (F.Z.); (Q.F.); (S.G.)
- Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin 150030, China
| | - Song Cui
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; (K.L.); (F.Z.); (Q.F.); (S.G.)
- Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin 150030, China
- Correspondence: (S.C.); (L.A.); Tel.: +86-451-5519-0568 (S.C.); Fax: +86-451-5519-0568 (S.C.)
| | - Fuxiang Zhang
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; (K.L.); (F.Z.); (Q.F.); (S.G.)
- Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin 150030, China
| | - Rupert Hough
- The James Hutton Institute, Craigiebuckler, Aberdeen AB15 8QH, UK; (R.H.); (Z.Z.)
| | - Qiang Fu
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; (K.L.); (F.Z.); (Q.F.); (S.G.)
- Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin 150030, China
| | - Zulin Zhang
- The James Hutton Institute, Craigiebuckler, Aberdeen AB15 8QH, UK; (R.H.); (Z.Z.)
| | - Shang Gao
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; (K.L.); (F.Z.); (Q.F.); (S.G.)
- Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin 150030, China
| | - Lihui An
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
- Correspondence: (S.C.); (L.A.); Tel.: +86-451-5519-0568 (S.C.); Fax: +86-451-5519-0568 (S.C.)
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76
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Systematic Assessment of Health Risk from Metals in Surface Sediment of the Xiangjiang River, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17051677. [PMID: 32143484 PMCID: PMC7084565 DOI: 10.3390/ijerph17051677] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 02/27/2020] [Accepted: 03/03/2020] [Indexed: 12/17/2022]
Abstract
The common empirical screening method is limited to a preliminary screen target from vast elements for human health risk assessments. Here, an element screening procedure was developed for assessing the human health risk of the elements in the sediment of the Xiangjiang River. Ninety-six surface sediment samples from eight sampling stations were collected and 27 elements of each sample were investigated. Thirteen of the 27 elements were screened for human health risk assessments through the three-run selections by calculating anthropogenic factors, building element maps, and the removal of unnecessary elements. Pb posed the greatest health risk and exhibited a potential noncarcinogenic risk for adults at the stations S4 and S5, although no visible noncarcinogenic and carcinogenic risk for adults and children in the Xiangjiang River. Our study also suggested that the chalcophile elements were associated with greater health risk, compared to the lithophile and siderophile ones.
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77
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Fei J, Ma J, Yang J, Liang Y, Ke Y, Yao L, Li Y, Liu D, Min X. Effect of simulated acid rain on stability of arsenic calcium residue in residue field. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2020; 42:769-780. [PMID: 30852732 DOI: 10.1007/s10653-019-00273-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 02/27/2019] [Indexed: 06/09/2023]
Abstract
In recent years, acid rain had a serious negative impact on the leaching behavior of industrial waste residue. Researches were mainly focused on the environmental hazards of heavy metal in the leachate, but ignored the effects of heavy metal speciation on the stability of waste residue in the subsequent stabilization process. In this study, the unstable calcium-arsenic compounds in the arsenic calcium residue were firstly removed by leaching process; subsequently, the crystallization agent was added to treat the remaining calcium-arsenic mixture. The results of the leaching process demonstrated that the decrease in particle size and pH value directly affected the increase in the cumulative leaching amount of arsenic, and the cumulative leaching ratio reached 1.55%. In addition, the concentration of arsenic decreased from 3583 to 49.1 mg L-1. After the crystallization process, the arsenic concentration was lower than the limit value of Identification Standards for Hazardous Wastes (GB 5085.3-2007). The SEM analysis showed the bulk structures, and XRD pattern confirmed that they were the stable compounds. Moreover, the result of XRD and SEM illustrated that acid concentration, chloride ions and sulfate ions were contributed to the transformation and growth of stable calcium arsenate compounds. Therefore, effective control of the acidity of acid rain, the type of anions in acid rain, and the particle size of residues would contribute to adjusting the arsenic speciation to be more stable. The leaching-crystallization process was of great significance to improve the stability of the arsenic-containing residue.
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Affiliation(s)
- Jiangchi Fei
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Jingjing Ma
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Jinqin Yang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Yanjie Liang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Yong Ke
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Liwei Yao
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Yuancheng Li
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Degang Liu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Xiaobo Min
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, China.
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Ahamad MI, Song J, Sun H, Wang X, Mehmood MS, Sajid M, Su P, Khan AJ. Contamination Level, Ecological Risk, and Source Identification of Heavy Metals in the Hyporheic Zone of the Weihe River, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17031070. [PMID: 32046204 PMCID: PMC7037357 DOI: 10.3390/ijerph17031070] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 02/03/2020] [Accepted: 02/05/2020] [Indexed: 11/16/2022]
Abstract
The sediment pollution caused by different metals has attracted a great deal of attention because of the toxicity, persistence, and bio-accumulation. This study focuses on heavy metals in the hyporheic sediment of the Weihe River, China. Contamination levels of metals were examined by using "geo-accumulation index, enrichment factor, and contamination factor" while ecological risk of metals were determined by "potential ecological risk and risk index." The pollutant accumulation of metals ranked as follows: "manganese (Mn) > chromium (Cr) > zinc (Zn) >copper (Cu) > nickel (Ni) > arsenic (As) > lead (Pb)". The geo-accumulation index identified arsenic as class 1 (uncontaminated to moderate contamination), whereas Cu, Cr, Ni, Zn, Pb, and Mn were classified as class 0 (uncontaminated). According to the enrichment factor, arsenic originated through anthropogenic activities and Cr, Ni, Cu, Zn, and Pb were mainly controlled by natural sources. The contamination factor elucidated that sediments were moderately polluted by (As, Cr, Cu, Zn, Mn, and Pb), whereas Ni slightly contaminated the sediments of the Weihe River. All metals posed a low ecological risk in the study area. The risk index revealed that contribution of arsenic (53.43 %) was higher than half of the total risk.
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Affiliation(s)
- Muhammad Irfan Ahamad
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China; (M.I.A.); (H.S.); (X.W.); (M.S.M.); (P.S.); (A.J.K.)
- Institute of Qinling Mountains, Northwest University, Xi’an 710127, China
| | - Jinxi Song
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China; (M.I.A.); (H.S.); (X.W.); (M.S.M.); (P.S.); (A.J.K.)
- Institute of Qinling Mountains, Northwest University, Xi’an 710127, China
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
- Correspondence: ; Tel.: +86-29-8830-8596
| | - Haotian Sun
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China; (M.I.A.); (H.S.); (X.W.); (M.S.M.); (P.S.); (A.J.K.)
- Institute of Qinling Mountains, Northwest University, Xi’an 710127, China
| | - Xinxin Wang
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China; (M.I.A.); (H.S.); (X.W.); (M.S.M.); (P.S.); (A.J.K.)
- Institute of Qinling Mountains, Northwest University, Xi’an 710127, China
| | - Muhammad Sajid Mehmood
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China; (M.I.A.); (H.S.); (X.W.); (M.S.M.); (P.S.); (A.J.K.)
| | - Muhammad Sajid
- Key Laboratory for Industrial Biocatalysis, Ministry of Education of China, Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
- Department of Chemical Engineering, University of Gujrat, Gujrat 50700, Pakistan
| | - Ping Su
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China; (M.I.A.); (H.S.); (X.W.); (M.S.M.); (P.S.); (A.J.K.)
- Institute of Qinling Mountains, Northwest University, Xi’an 710127, China
| | - Asif Jamal Khan
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China; (M.I.A.); (H.S.); (X.W.); (M.S.M.); (P.S.); (A.J.K.)
- Institute of Qinling Mountains, Northwest University, Xi’an 710127, China
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79
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Teng C, Jia J, Wang Z, Yan B. Oral Co-Exposures to zinc oxide nanoparticles and CdCl 2 induced maternal-fetal pollutant transfer and embryotoxicity by damaging placental barriers. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 189:109956. [PMID: 31761550 DOI: 10.1016/j.ecoenv.2019.109956] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 11/12/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
Synergistic toxicity from multiple environmental pollutants poses greater threat to humans, especially to susceptible pregnant population. Here we evaluated combined toxicity from environment pollutants zinc oxide nanoparticles (ZnO NPs) and cadmium chloride (CdCl2) using two pregnant mice models established by oral administration during peri-implantation or organogenesis period. We found that exposures to combined pollutants only at organogenesis stage induced higher fetal deformity rate compared to co-exposures at peri-implantation stage. We further discovered that surface charge of ZnO NPs were modified after Cd2+ adsorption and the resulting nanoadducts caused more severe damages in placental barriers by causing shed endothelial cells and decreased expressions of tight junction proteins ZO1, occludin, claudin-4 and claudin-8. These cellular and molecular events enhanced maternal-fetal transfer of both pollutants and aggravated embryotoxicity. Our findings help elucidate synergistic embryotoxicity by nanoparticle/pollutant adducts and establish proper safety criteria for pregnant population in an era that nanotechnology-based products are widely used.
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Affiliation(s)
- Chuanfeng Teng
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, PR China
| | - Jianbo Jia
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, PR China
| | - Zhiping Wang
- School of Public Health, Shandong University, Jinan, 250100, PR China.
| | - Bing Yan
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, PR China; School of Environmental Science and Engineering, Shandong University, Jinan, 250100, PR China.
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80
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Heavy Metals in Sediment from the Urban and Rural Rivers in Harbin City, Northeast China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16224313. [PMID: 31698765 PMCID: PMC6888195 DOI: 10.3390/ijerph16224313] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 10/31/2019] [Accepted: 11/05/2019] [Indexed: 11/17/2022]
Abstract
The concentrations and ecological risk of six widespread heavy metals (Cu, Cr, Ni, Zn, Cd and Pb) were investigated and evaluated in sediments from both urban and rural rivers in a northeast city of China. The decreasing trend of the average concentration of heavy metals was Zn > Cr > Cu > Pb > Ni > Cd in Majiagou River (urban) and was Zn > Cr > Pb > Cu > Ni > Cd in Yunliang River (rural). The results showed that the concentrations of Cd and Zn were significantly elevated compared to the environmental background value (p < 0.05). Half of all sampling locations were deemed ‘contaminated’ as defined by the improved Nemerow pollution index (PN’ > 1.0). Applying the potential ecological risk index (RI) indicated a ‘high ecological risk’ for both rivers, with Cd accounting for more than 80% in both cases. Source apportionment indicated a significant correlation between Cd and Zn in sediments (R = 0.997, p < 0.01) in Yunliang River, suggesting that agricultural activities could be the major sources. Conversely, industrial production, coal burning, natural sources and traffic emissions are likely to be the main pollution sources for heavy metals in Majiagou River. This study has improved our understanding of how human activities, industrial production, and agricultural production influence heavy metal pollution in urban and rural rivers, and it provides a further weight of evidence for the linkages between different pollutants and resulting levels of heavy metals in riverine sediments.
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81
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Fang X, Peng B, Wang X, Song Z, Zhou D, Wang Q, Qin Z, Tan C. Distribution, contamination and source identification of heavy metals in bed sediments from the lower reaches of the Xiangjiang River in Hunan province, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 689:557-570. [PMID: 31279202 DOI: 10.1016/j.scitotenv.2019.06.330] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/01/2019] [Accepted: 06/21/2019] [Indexed: 06/09/2023]
Abstract
Concentrations of heavy metals Ba, Sc, V, Cr, Mn, Co, Ni, Th, U, Cu, Pb, Zn, and Cd in sediments from the lower reaches of the Xiangjiang River were analyzed using inductively coupled plasma mass spectrometry. The results suggest that there are two metal distribution patterns in these sediments: (1) Ba, Sc, V, Cr, Mn, Th, and U are relatively homogeneously distributed and (2) Cd, Pb, Zn Cu, Co and Ni are heterogeneously distributed. The heterogeneously distributed metals are significantly enriched in these sediments and, thereby, contribute to contamination. Assessments of heavy metal contamination using the Geoaccumulation index, Pollution load index, and potential ecological risk index suggest that the levels of contamination from Cd and Mn are extremely high and moderately high, respectively, in all the sediments from the lower river. In comparison, the levels of contamination by Cu, Zn, and Pb varied spatially, decreasing progressively downriver. The level of contamination by Pb, Zn, and Cu in sediments from the Zhuzhou reach is extremely high, and is moderate to significant high for the Xiangtan, Changsha, and Xiangyin reaches. The ecological potential risks posed heavy metals are ranked, in descending order, as Cd > Pb > Cu > Zn > Cr > Ni > Co > Mn for sediments from the Zhuzhou reach and Cd > Pb > Cu > Ni > Cr > Co > Zn > Mn for sediments from the Xiangtan, Changsha, and Xiangyin reaches. Principal component analysis and enrichment factor calculations suggest that Ba, Sc, V, Cr, Th, and U mostly originate from natural processes. While, Cd, Pb, Zn, Cu, Co, Ni, and Mn are derived from both natural processes and anthropogenic activities. Therefore, strategies for environmental protection in this watershed should focus on contamination by Cd, Pb, Zn, and Cu, with Cd requiring particular attention.
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Affiliation(s)
- Xiaohong Fang
- Faculty of Resource and Environment Sciences, Hunan Normal University, Changsha 410081, PR China; Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, Changsha 410081, PR China
| | - Bo Peng
- Faculty of Resource and Environment Sciences, Hunan Normal University, Changsha 410081, PR China; Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, Changsha 410081, PR China.
| | - Xin Wang
- Faculty of Resource and Environment Sciences, Hunan Normal University, Changsha 410081, PR China; Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, Changsha 410081, PR China
| | - Zhaoliang Song
- Institute of Surface-Earth System Science, Tianjin University, Tianjin 300072, PR China
| | - Dongxiao Zhou
- Faculty of Resource and Environment Sciences, Hunan Normal University, Changsha 410081, PR China; Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, Changsha 410081, PR China
| | - Qin Wang
- Faculty of Resource and Environment Sciences, Hunan Normal University, Changsha 410081, PR China; Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, Changsha 410081, PR China
| | - Zhilian Qin
- Faculty of Resource and Environment Sciences, Hunan Normal University, Changsha 410081, PR China; Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, Changsha 410081, PR China
| | - Changyin Tan
- Faculty of Resource and Environment Sciences, Hunan Normal University, Changsha 410081, PR China; Key Laboratory of Environmental Heavy-Metal Contamination and Ecological Remediation, Hunan Normal University, Changsha 410081, PR China
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82
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Kebonye NM, Eze PN. Zirconium as a suitable reference element for estimating potentially toxic element enrichment in treated wastewater discharge vicinity. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 191:705. [PMID: 31673802 DOI: 10.1007/s10661-019-7812-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 09/11/2019] [Indexed: 06/10/2023]
Abstract
The suitability of a reference element or normalizer used in assessing soil contamination levels using enrichment factor (EF) is important for soil quality assessment and monitoring. This study evaluated the results of using three reference elements Ti, Fe, and Zr for EF determination of Rb and Sr in soils within treated wastewater discharge vicinity, Central Botswana. The upper continental crust (UCC), world average values (WAV), and the local background values (LBV) were used in EF assessment of eight pedons. The elemental concentrations of the soils were determined with portable X-ray fluorescence (pXRF) analyzer. Relationships between the elements were strongly significant between Rb and Ti (r = 0.600, p < 0.01), Rb and Fe (r = 0.735, p < 0.01), Sr and Ti (r = 0.545, p < 0.01), and Sr and Fe (r = 0.841, p < 0.01). Second-level correlation analysis between contamination factor (CF) and EF levels showed Zr as the best reference element for Rb and Sr in the soils. Results from this study provide baseline knowledge necessary for contamination assessment and monitoring of soils with similar environmental conditions.
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Affiliation(s)
- Ndiye M Kebonye
- Department of Soil Science and Soil Protection, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Suchdol, Prague, Czech Republic.
| | - Peter N Eze
- Department of Earth and Environmental Science, Botswana International University of Science and Technology, Private Bag 16, Palapye, Botswana
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83
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Geochemical Fractions of the Agricultural Soils of Southern Poland and the Assessment of the Potentially Harmful Element Mobility. MINERALS 2019. [DOI: 10.3390/min9110674] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Surface samples (0–25 cm each) of agricultural soils were investigated in five Regions (voivodeships) of southern Poland. The mean Potentially Harmful Element (PHE) pseudototal content ranges were as follows (mg/kg): As 5.19–10.9, Cd 0.34–1.56, Co 1.92–6.70, Cr 9.05–25.7, Cu 8.74–69.4, Hg 0.001–0.08, Ni 3.93–19.9, Pb 20.3–183, Sb 0.80–1.42, Tl 0.04–0.17, and Zn 61.3–422. The PHE availability depended on pH, the organic carbon (Corg) content, and the pseudototal PHE content in soils. Exchangeable and acid soluble PHE contents (BCRF1) determined in the Community Bureau of Reference (BCR) three-step sequential extraction procedure decreased in this order: Cd > Zn > Co > Ni = Sb > Cu > Tl > As > Cr = Pb. Actually available PHE contents in pore water (0.01 mol/dm3 CaCl2) ranged as follows: Cd 0.81–17%, Cr 0–0.25%, Cu 0.01–2.31%, Ni 0.16–2%, Pb 0.2–0.49%, and Zn 0.25–2.12%. The potential soluble total content of PHEs in pore water (0.05 mol/dm3 Na2EDTA) ranged as follows: Cd 27–91%, Cr 0.7–7.1%, Cu 6.7–98%, Ni 3.6–41%, Pb 15–41%, and Zn 3–34%. The mobility factor (MF) values indicated Cd (31.6%) and Zn (21.0%) as the most mobile elements in soil. Other PHEs followed the order of Co > Ni > Tl > As > Sb > Cu > Cr > Pb, with the MF values <10%. The risk assessment code (RAC) values revealed a very high ecological risk of Cd and Zn in the Podkarpackie Region and a high ecological risk of Cd in the Regions of Opolskie, Śląskie, Małopolskie, and Podkarpackie, and the same of Zn in the Opolskie and Śląskie. The modified risk assessment code (mRAC) index pointed a very high potential of adverse effects in soils in the Podkarpackie and a medium potential in the Opolskie, Śląskie, Małopolskie, and Świętokrzyskie. The potential adverse effect risk, described by the individual contamination factor (ICF) factor, was the following in the Regions, in the decreasing order: Cd > Pb > Sb > Zn > Co > Cu > Ni > Tl > As > Cr, and the same as described by the global contamination factor (GCF) values: Opolskie > Podkarpackie > Świętokrzyskie > Śląskie > Małopolskie.
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84
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Jiang D, Wang Y, Zhou S, Long Z, Liao Q, Yang J, Fan J. Multivariate Analyses and Human Health Assessments of Heavy Metals for Surface Water Quality in the Xiangjiang River Basin, China. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2019; 38:1645-1657. [PMID: 31063223 DOI: 10.1002/etc.4461] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 11/02/2018] [Accepted: 05/02/2019] [Indexed: 06/09/2023]
Abstract
Pollution by heavy metals in river water is becoming a major subject of global drinking water concern, and the Xiangjiang River is one of the most heavily polluted rivers in China. Water samples were collected from 17 sites spanning the entire Xiangjiang watershed from 2005 to 2016 to investigate spatial-temporal distributions and potential human health risks related to 8 metal pollutants (As, Cd, Hg, Cr, Cu, Pb, Zn, and Se). The results of spatial-temporal distribution analyses proved that most metals were below the guideline limits the majority of the time. However, the hazard index and carcinogenic risk analyses indicated that As and Cr were associated with a potential risk of cancer, although noncarcinogenic heavy metals in general and carcinogenic risk declined year by year. A nonparametric seasonal Mann-Kendall's test revealed that there were notable decreasing trends in As, Cd, Zn, Cu, Cr, and Pb for most sites, whereas Se and Hg significantly increased in some areas over the targeted 12 yr. The results of principal component analysis agreed with those of dual hierarchical cluster analysis in the identification of pollution sources, the results of which are as follows: 1) As, Cd, Pb, Hg, and Zn were mainly derived from anthropogenic activities and the smelting industry; 2) Cr and Cu mainly originated from agricultural or industrial activities; and 3) Se was predominantly from natural erosion. The present study will be conducive to optimizing the distribution of water monitoring stations and drafting remediation strategies pertaining to the protection of public health in metal-polluted areas. Environ Toxicol Chem 2019;38:1645-1657. © 2019 SETAC.
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Affiliation(s)
- Dongyi Jiang
- School of Metallurgy and Environment, Central South University, Changsha, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, China
| | - Yunyan Wang
- School of Metallurgy and Environment, Central South University, Changsha, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, China
| | - Sangyang Zhou
- Hunan Province Environmental Monitoring Center, Changsha, China
| | - Zhe Long
- School of Information Science and Engineering, Central South University, Changsha, China
| | - Qi Liao
- School of Metallurgy and Environment, Central South University, Changsha, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, China
| | - Jinqin Yang
- School of Metallurgy and Environment, Central South University, Changsha, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, China
| | - Juan Fan
- Hunan Province Environmental Monitoring Center, Changsha, China
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85
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Assessment of Potential Toxic Metals in a Ramsar Wetland, Central Mexico and its Self-Depuration through Eichhornia crassipes. WATER 2019. [DOI: 10.3390/w11061248] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The Valsequillo reservoir is a Ramsar wetland due to its importance as a point of convergence of migratory waterfowl. It is located in Central Mexico and is currently endangered by the constant spill of municipal and industrial discharges from Puebla city. On this context, we evaluated thirteen potential toxic metals (PTMs) in water, Water hyacinth (E. crassipes) plants and sediments at this site. A combined number of 31 samples were collected from the study area. The degree/extent of metal contamination in sediments was assessed through different geochemical indexes, namely: Geoaccumulation index (Igeo), Enrichment Factor (EF) and Potential Ecological Risk Index (PERI). The ability of Water hyacinth plants residues as a phytodepurator in the Ramsar site was tested in terms of the bioaccumulation factor (BF) and the translocation factor (TF). The results concerning sediments showed that Pb, Cu and Hg pose a threat to the aquatic environment since Igeo and EF indicate sediments ranging from moderately contaminated to contaminated. Moreover, PERI pointed out Hg as the main contributor to the ecological risk in sediments, especially in the part of the reservoir covered by E. crassipes. Water hyacinth plants displayed good capacity to absorb PTMs from the water, since the content of Co, Zn, As, Ni, Cu, Pb, Ti, Cr, Ba, Mo and V in the total plant was (all values in mg/kg of dry weight) 21 ± 9, 408 ± 300, 12 ± 6, 93 ± 21, 93 ± 69, 53 ± 29, 1067 ± 643, 78 ± 55, 362 ± 39, 14 ± 0.6 and 96 ± 35, respectively. Metal content in sediments resembles to that of E. crassipes; especially in the roots, suggesting a constant deposition of plants at the bottom of the reservoir, which contributes to the eutrophication of the water. The present work encourages the need for a sustainable management of Water hyacinth plants in the Ramsar site, since they represent a plague and a natural phyto-depurator at the same time.
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86
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Li H, Chai L, Yang Z, Liao Q, Liu Y, Ouyang B. Seasonal and spatial contamination statuses and ecological risk of sediment cores highly contaminated by heavy metals and metalloids in the Xiangjiang River. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2019; 41:1617-1633. [PMID: 30661141 DOI: 10.1007/s10653-019-00245-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 01/08/2019] [Indexed: 06/09/2023]
Abstract
To reveal seasonal and spatial variations of heavy metals and metalloids (HMMs) in sediment of the Xiangjiang River, a total of 24 water and 649 sediment samples were collected from six sampling stations in the Songbai section of the river which had been polluted by HMMs for 100 years. Their contamination statuses and ecological risk were determined by enrichment factor (EF), geo-accumulation index (Igeo), pollution load index (PLI), and mean probable effect concentration quotients (mPECQs) analyses. The results revealed a unique seasonal distribution of metals in the sampling stations: The highest concentrations were revealed in the dry seasons (autumn and winter) and the lowest during the wet seasons (spring and summer). It exhibited a greater seasonal variation in the estuary sediment cores (sites ME and MW) than in the cores of other sites. Moreover, the highest concentrations of the tested metals were also found in the estuary sediment cores in the dry seasons (autumn and winter). The highest vertical concentrations of Pb, Zn, Cu, Ni, As, Fe, and Mn were observed at the depths of 16-36 cm in all of the sampled sediment cores. The EF, Igeo, PLI, and mPECQs values of all samples in autumn were higher than in summer. Cd posed the highest ecological risk in all seasons, although its concentrations were lower compared to other studied elements. Our results will benefit to develop feasible sediment quality guidelines for government monitor and remediate the local sediments in the Xiangjiang River.
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Affiliation(s)
- Huan Li
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
- Changsha Environmental Protection College, Changsha, 410004, China
| | - Liyuan Chai
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Zhihui Yang
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Qi Liao
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, China.
| | - Yi Liu
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Bin Ouyang
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
- Changsha Environmental Protection College, Changsha, 410004, China
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87
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Li H, Yang J, Ye B, Jiang D. Pollution characteristics and ecological risk assessment of 11 unheeded metals in sediments of the Chinese Xiangjiang River. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2019; 41:1459-1472. [PMID: 30542780 DOI: 10.1007/s10653-018-0230-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 12/04/2018] [Indexed: 05/07/2023]
Abstract
With the change in global climate and environment, water scarcity has been of great concern around the word and exacerbated by serious pollution in water resources. Pollutants accumulated in sediments are threatening water safety and ecological security. Different from others focusing on prevalent heavy metals (Cu, Pb, Zn, As, Cd, Cr, Hg, etc.), in this study, some unheeded metal pollutants Tl, Sb, Mo, Sr, Co, V, Ti, Ca, Mg, Be and Li were monitored in sediments of the Xiangjiang River, China. It was found that there was no remarkable vertical variation with depth, but the seasonal characteristics of Tl, Sb, Mo, Be and Li. The enrichment, pollution and potential ecological risk of Tl, Sb and Mo were revealed by the enrichment factor (EF), geoaccumulation index (Igeo), pollution load index (PLIsite and PLIzone) and potential ecological risk index (RI). It is noticed that the pollution of Tl mainly occurred in summer at midstream and downstream and Mo pollution was much higher than Sb in summer and the reverse in other seasons. Additionally, sediment quality on east side was worse than on west side in Songbai section of the Xiangjiang River. For the first time, the toxic-response factor was figured out as Mo = 18, Tl = 17, Sb = 13, Sr = 6, Co = Be = 1, V = Li = 0, and importantly, the high potential ecological risk of Tl, Sb and Mo needs to be taken seriously for the comprehensive assessment on watershed environmental quality.
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Affiliation(s)
- Huan Li
- Changsha Environmental Protection College, Changsha, 410004, China
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Jinqin Yang
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Bin Ye
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Dongyi Jiang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
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88
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Liao Q, Tu G, Yang Z, Wang H, He L, Tang J, Yang W. Simultaneous adsorption of As(III), Cd(II) and Pb(II) by hybrid bio-nanocomposites of nano hydroxy ferric phosphate and hydroxy ferric sulfate particles coating on Aspergillus niger. CHEMOSPHERE 2019; 223:551-559. [PMID: 30797164 DOI: 10.1016/j.chemosphere.2019.02.070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 02/07/2019] [Accepted: 02/11/2019] [Indexed: 06/09/2023]
Abstract
To develop an efficient, convenient and cost-effective method to simultaneously remove pollution of As(III), Cd(II) and Pb(II) in wastewater, a strategy to fabricate hybrid bio-nanocomposites ((n-HFP + n-HFS)@An) of nano hydroxy ferric phosphate (n-HFP) and hydroxy ferric sulfate (n-HFS) particles coating on Aspergillus niger was applied. The scanning electron microscope and energy dispersive spectrum analyses showed that (n-HFP + n-HFS)@An composites had been successfully developed which well solved the self-agglomeration problem of the nano particles. Comparing to the bulk nanoparticles, the adsorption rates of the (n-HFP + n-HFS)@An composites for the three metals were promoted 145.34, 28.98 and 25.18% and reached 76.84, 73.62 and 94.31%, respectively. Similarly, the adsorption capacities for As(III), Cd(II), and Pb(II) were 162.00, 205.83 and 730.79 mg/g, respectively. Moreover, the pseudo-second-order kinetic model was more relevant to the adsorption on the three metals by (n-HFP + n-HFS)@An, and adsorbing As(III) was fitted to the Freundlich isotherm model, while the adsorption on Cd(II) or Pb(II) was related to the Langmuir isotherm model. In addition, the adsorption of Cd(II) and Pb(II) was associated with transformation of hydroxyl groups and precipitation with phosphate. As(III) was adsorbed through exchange between AsO2- and SO42- in the (n-HFP + n-HFS)@An composites.
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Affiliation(s)
- Qi Liao
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China; National Engineering Research Center for Heavy Metals Pollution Control and Treatment, 410083, Changsha, China
| | - Guangyuan Tu
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China
| | - Zhihui Yang
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China; National Engineering Research Center for Heavy Metals Pollution Control and Treatment, 410083, Changsha, China
| | - Haiying Wang
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China; National Engineering Research Center for Heavy Metals Pollution Control and Treatment, 410083, Changsha, China; Water Pollution Control Technology Key Lab of Hunan Province, 410083, Changsha, China
| | - Lixu He
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China
| | - Jiaqi Tang
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China
| | - Weichun Yang
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China; National Engineering Research Center for Heavy Metals Pollution Control and Treatment, 410083, Changsha, China; Water Pollution Control Technology Key Lab of Hunan Province, 410083, Changsha, China.
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89
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Zeng P, Guo Z, Xiao X, Peng C, Huang B, Feng W. Complementarity of co-planting a hyperaccumulator with three metal(loid)-tolerant species for metal(loid)-contaminated soil remediation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 169:306-315. [PMID: 30458397 DOI: 10.1016/j.ecoenv.2018.11.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/02/2018] [Accepted: 11/05/2018] [Indexed: 06/09/2023]
Abstract
Co-planting with multiple plant species has great value for the remediation of soil co-contaminated with metal(loid)s. A pot experiment has been conducted to study the growth, phytoextraction of metal(loid) and complementarity by co-planting Pteris vittata L. with three metal(loid)-tolerant species with large biomass (namely Arundo donax L., Morus alba L., and Broussonetia papyrifera L.) on soil co-contaminated with As, Cd, Pb, and Zn. The results showed that the co-planting can favor the growth and uptake of As in hyperaccumulator P. vittata L., and improve comprehensive extraction of metal(loid). The total biomass and content of As in the roots of P. vittata L. under the co-planting system were significantly (p < 0.05) improved by 117.5% and 122.0%, respectively, compared with that in monoculture, while the content of As, Cd, Pb and Zn in the tissues of A. donax L., M. alba L. and B. papyrifera L. was slightly increased. The comprehensive accumulation amounts for As, Cd, Pb, and Zn by the four plants co-planting in contaminated soil were higher than that in part of plant's monoculture. Moreover, availability of As, Cd, and Zn in the contaminated soil was decreased in the co-planting system, meanwhile soil urease and acid phosphatase activities in soil significantly (p < 0.05) promoted as compared to the monocultures. The results suggested that positive interaction between hyperaccumulator and three metal(loid)-tolerant species can effectively enhance the growth of P. vittata L., regulate the comprehensive metal(loid)s accumulation capacity, and improve the environmental quality of contaminated soil, which drives high phytoremediation potential for metal(loid)s-contaminated soil by the co-planting.
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Affiliation(s)
- Peng Zeng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Zhaohui Guo
- School of Metallurgy and Environment, Central South University, Changsha 410083, China.
| | - Xiyuan Xiao
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Chi Peng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Bo Huang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Wenli Feng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
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90
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Zeng P, Guo Z, Xiao X, Peng C, Feng W, Xin L, Xu Z. Phytoextraction potential of Pteris vittata L. co-planted with woody species for As, Cd, Pb and Zn in contaminated soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:594-603. [PMID: 30205349 DOI: 10.1016/j.scitotenv.2018.09.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/04/2018] [Accepted: 09/04/2018] [Indexed: 05/27/2023]
Abstract
The objective of this study was to determine the phytoextraction potential of a hyperaccumulator co-planted with a large biomass of woody plant in metal(loid)-contaminated soil. A pot experiment was conducted for 270 days (d) to study the growth, physiological responses, and metal(loid)s accumulation characteristics of plants, which included a shade-requiring, As-hyperaccumulator perennial herb, Pteris vittata L., co-planted with a woody tree, namely Morus alba L. or Broussonetia papyrifera L., for soil contaminated with arsenic (As), cadmium (Cd), lead (Pb), and zinc (Zn). The results showed that the biomass, photosynthetic pigment contents, antioxidant enzyme activity, and uptake of As in P. vittata L. were significantly enhanced by co-planting with M. alba L. or B. papyrifera L. Especially, the uptake of As by P. vittata L. was significantly (p < 0.05) increased by 80.0% and 64.2% when it was co-planted with M. alba L. or B. papyrifera L., respectively, while the As, Cd, Pb, and Zn contents of both M. alba L. and B. papyrifera L. were not significantly promoted by the co-planting. The comprehensive phytoextraction of metal(loid)s could be optimized by the co-planting of P. vittata L. with M. alba L. or B. papyrifera L. The total amount of As in the shoots from co-planting species was significantly (p < 0.05) higher than that of the monoculture with M. alba L. or B. papyrifera L., and that of Cd and Zn in the shoots was significantly (p < 0.05) higher than that of the monoculture with P. vittata L. The results showed that the co-planting of P. vittata L. with M. alba L. or B. papyrifera L. can alleviate the toxic effects of metal(loid)s on plant growth and improve the comprehensive phytoextraction amounts of metal(loid)s, and is a promising strategy for remediation of metal(loid)-contaminated soil.
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Affiliation(s)
- Peng Zeng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Zhaohui Guo
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China.
| | - Xiyuan Xiao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Chi Peng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Wenli Feng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Liqing Xin
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Zhi Xu
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
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91
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Shen F, Mao L, Sun R, Du J, Tan Z, Ding M. Contamination Evaluation and Source Identification of Heavy Metals in the Sediments from the Lishui River Watershed, Southern China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16030336. [PMID: 30691076 PMCID: PMC6388221 DOI: 10.3390/ijerph16030336] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 01/01/2019] [Accepted: 01/21/2019] [Indexed: 12/03/2022]
Abstract
Seven heavy metals (Cr, Mn, Co, Ni, Cu, Zn, Pb) were measured in surface sediments from the Lishui River watershed, an area with increased soil erosion in China. The mean concentrations of heavy metals were 61.20 mg/kg (Cr), 757.15 mg/kg (Mn), 9.39 mg/kg (Co), 25.31 mg/kg (Ni), 22.84 mg/kg (Cu), 91.66 mg/kg (Zn), and 40.19 mg/kg (Pb), respectively. The spatial distribution of heavy metals was site-specific, exhibiting a remarkably high level in the sampling stations with intense agricultural activities (Lixian) and industrial activities (Jinshi). Contamination indexes including contamination factor, pollution load index, nemerow multi-factor index, potential ecological risk index, and human health risk were used to assess the pollution degree of the river sediments. The results indicated the pollution degree of heavy metals decreased in the order of Mn > Pb > Zn > Cr > Cu > Ni > Co. Heavy metals resulted in non-pollution to moderate pollution, with low ecological risk and an acceptable carcinogenic risk caused by Cr and Ni for children and adults. Person’s correlation analysis and principal component analysis, coupled with cluster analysis, revealed that the sediments from the Lishui River were mainly influenced by two sources. Cr, Co, Ni, and Cu were mainly derived from natural sources, while Mn, Zn, and Pb originated from agricultural and industrial activities, mining, and vehicular traffic.
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Affiliation(s)
- Fang Shen
- School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China.
| | - Longjiang Mao
- School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China.
- Jiangsu Research Center for Ocean Survey Technology, Nanjing University of Information Science and Technology, Nanjing 210044, China.
| | - Runxia Sun
- School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China.
| | - Jijing Du
- School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China.
| | - Zhihai Tan
- Environmental and Chemical Engineering College, Xi'an Poly-technic University, Xi'an 710048, China.
| | - Min Ding
- School of Tourism, Taishan University, Tai'an271021, China.
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92
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Luo Z, Tu Y, Li H, Qiu B, Liu Y, Yang Z. Endocrine-disrupting compounds in the Xiangjiang River of China: Spatio-temporal distribution, source apportionment, and risk assessment. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 167:476-484. [PMID: 30368141 DOI: 10.1016/j.ecoenv.2018.10.053] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 10/08/2018] [Accepted: 10/12/2018] [Indexed: 06/08/2023]
Abstract
Endocrine-disrupting compounds (EDCs) were seasonally investigated in the surface water of the Xiangjiang River (south China) in order to understand their spatio-temporal distribution, source apportionment, and ecological risks. The occurrence of 21 EDCs were determined with liquid chromatography-tandem mass spectrometry in the water samples collected along the river over four seasons, and the results were statistically analyzed. The concentrations of progestagens, androgens, estrogens ranged from not detected (ND) to 98.3 ng L-1; while the concentrations of alkylphenols ranged from 0.8 to 3.1 × 103 ng L-1; and that of caffeine ranged from 0.1 to 49.8 ng L-1. The detection frequencies of bisphenol A, 4-tert-octylphenol, 4-n-nonylphenol, estrone, and 17β-estradiol were 95-100% during the four sampling campaigns. The seasonal and spatial variation trend of EDCs in the Xiangjiang River was noticeable. The concentration of EDCs in Yueyang section (downstream) was the highest in winter, while the concentration in Yongzhou (upstream) section was the lowest in spring. The concentration of EDCs in the Xiangjiang River was significantly correlated with the levels of the total organic carbon, water temperature, and dissolved oxygen. Source analysis indicated that untreated sewage was the major source of EDCs. Furthermore, the potential risks of EDCs in the surface water to aquatic organisms were assessed with the risk quotient method (European Commission, 2003), and the results indicated the highest ecological risk of 17β-estradiol in the Xiangjiang River.
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Affiliation(s)
- Zhoufei Luo
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China.
| | - Yi Tu
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China.
| | - Haipu Li
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China.
| | - Bo Qiu
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China.
| | - Yang Liu
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China.
| | - Zhaoguang Yang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China.
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93
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Huang B, Guo Z, Xiao X, Zeng P, Peng C. Changes in chemical fractions and ecological risk prediction of heavy metals in estuarine sediments of Chunfeng Lake estuary, China. MARINE POLLUTION BULLETIN 2019; 138:575-583. [PMID: 30660308 DOI: 10.1016/j.marpolbul.2018.12.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 12/10/2018] [Accepted: 12/11/2018] [Indexed: 06/09/2023]
Abstract
The changes of available forms of heavy metals would affect their corresponding ecological risks in sediments. The distribution of chemical fractions of heavy metals in sediment profiles from Chunfeng Lake estuary was investigated and then a prediction model for potential ecological risk index (PMRI) was proposed to forecast the changes of ecological risks caused by the aging process of metals in sediments. The results show that the estuarine sediments were polluted by As and Cd. The proportions of available metals were generally decreased with depth, while those of the residual forms showed an opposite trend. The aging rates of Cd and As were found to be 0.21 and 0.12%/year, respectively. The PMRI model showed that the total ecological risk of metals in sediments decreased from moderate to low risk level (<150) after 25 years, while cadmium would need 47 years in contrast to the 15 years for As.
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Affiliation(s)
- Bo Huang
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, People's Republic of China; Yueyang Environmental Monitoring Centre, Yueyang 414000, People's Republic of China
| | - Zhaohui Guo
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, People's Republic of China
| | - Xiyuan Xiao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, People's Republic of China
| | - Peng Zeng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, People's Republic of China
| | - Chi Peng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, People's Republic of China.
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94
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Zhang Z, Lu Y, Li H, Tu Y, Liu B, Yang Z. Assessment of heavy metal contamination, distribution and source identification in the sediments from the Zijiang River, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 645:235-243. [PMID: 30029107 DOI: 10.1016/j.scitotenv.2018.07.026] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 06/30/2018] [Accepted: 07/02/2018] [Indexed: 05/14/2023]
Abstract
In this study, the contents of 10 heavy metals (Sb, Cd, Cr, Mn, Co, Ni, Cu, Zn, As, and Pb) in 49 sediment samples from the Zijiang River were determined by using inductively coupled plasma-optical emission spectrometry. Contamination indexes including geoaccumulation index, modified degree of contamination, sediment quality guidelines, potential ecological risk index, together with potential ecological risk factor were used to assess heavy metal contamination in the sediments of the Zijiang River. Pearson's correlation analysis and principal component analysis were used to identify the sources of heavy metals. The results indicated that the mean values of heavy metals in the Zijiang River's sediments were found to be significantly higher than the corresponding background values. But when comparing with that in other rivers in the world, they were at medium levels except for Sb. Furthermore, a comparison of the heavy metal concentrations and the consensus-based sediment quality guidelines showed that the heavy metal pollutions (Cd, Cr, Ni, Cu, Zn, As, and Pb) tended to occasionally pose harmful impacts on the ecosystem. The values of contamination indexes revealed that serious heavy metal contamination and relatively high potential ecological risks were mainly existed in the downstream of antimony mining and smelting factories (S23-S49). In addition, high potential ecological risks of Sb were observed in sampling sites that were close to those factories (S23, S24, S25, and S27), and high potential ecological risks of Cd were observed in the downstream (S37-S49). Basing on the Pearson's correlation analysis and principal component analysis, three main sources were identified. Co, Zn, Cd, and Cu contaminants were mainly derived from agricultural activities; As, Sb, Mn, and Pb mainly came from mining and smelting activities; Cr and Ni were mainly from natural sources.
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Affiliation(s)
- Zhaoxue Zhang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Yi Lu
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Haipu Li
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China; Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha 410083, PR China.
| | - Yi Tu
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Boyu Liu
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Zhaoguang Yang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China; Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha 410083, PR China.
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95
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Elias MS, Ibrahim S, Samuding K, Rahman SA, Hashim A. The sources and ecological risk assessment of elemental pollution in sediment of Linggi estuary, Malaysia. MARINE POLLUTION BULLETIN 2018; 137:646-655. [PMID: 30503479 DOI: 10.1016/j.marpolbul.2018.11.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 10/23/2018] [Accepted: 11/06/2018] [Indexed: 06/09/2023]
Abstract
In this study, concentrations of heavy metals, rare earth elements (REEs), Uranium (U) and Thorium (Th) of the actinide group were determined from Linggi estuary sediment samples by neutron activation analysis (NAA) and inductive coupled plasma - mass spectrometry techniques. The geo-accumulation (Igeo) and ecological risk index (Ri) values were calculated to identify the quality status of Linggi estuary sediments. Results indicated Linggi estuary was polluted by arsenic (As), lead (Pb) and antimony (Sb). REEs, U and Th showed significant increase of concentration in Linggi estuary sediments. Ri of Linggi estuary was categorised as low to considerable ecological risk, which indicates no significant to moderate effect on the majority of the sediment-dwelling organisms. Correlation matrix and principal component analysis assessed pollution sources to be both natural and anthropogenic.
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Affiliation(s)
- Md Suhaimi Elias
- School of Chemistry and Environment, Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia; Analytical Chemistry Application Group (ACA), Waste and Environmental Technology Division, Malaysian Nuclear Agency, Bangi, 43000 Kajang, Selangor, Malaysia.
| | - Shariff Ibrahim
- School of Chemistry and Environment, Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia
| | - Kamarudin Samuding
- Environmental Tracer Application Group (E-TAG), Waste and Environmental Technology Division, Malaysian Nuclear Agency, Bangi, 43000 Kajang, Selangor, Malaysia
| | - Shamsiah Ab Rahman
- Analytical Chemistry Application Group (ACA), Waste and Environmental Technology Division, Malaysian Nuclear Agency, Bangi, 43000 Kajang, Selangor, Malaysia
| | - Azian Hashim
- Analytical Chemistry Application Group (ACA), Waste and Environmental Technology Division, Malaysian Nuclear Agency, Bangi, 43000 Kajang, Selangor, Malaysia
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96
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Reference measurements of cadmium and lead contents in candidates for new environmental certified materials by isotope dilution inductively coupled plasma mass spectrometry. Microchem J 2018. [DOI: 10.1016/j.microc.2018.06.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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97
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Yang Z, Shi W, Yang W, Liang L, Yao W, Chai L, Gao S, Liao Q. Combination of bioleaching by gross bacterial biosurfactants and flocculation: A potential remediation for the heavy metal contaminated soils. CHEMOSPHERE 2018; 206:83-91. [PMID: 29730568 DOI: 10.1016/j.chemosphere.2018.04.166] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 04/22/2018] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
Combining bioleaching by the gross biosurfactants of Burkholderia sp. Z-90 and flocculation by poly aluminium chloride (PAC) was proposed to develop a potential environment-friendly and cost-effective technique to remediate the severely contaminated soils by heavy metals. The factors affecting soil bioleaching by the gross biosurfactants of Burkholderia sp. Z-90 were optimized. The results showed the optimal removing efficiencies of Zn, Pb, Mn, Cd, Cu, and As by the Burkholderia sp. Z-90 leachate were 44.0, 32.5, 52.2, 37.7, 24.1 and 31.6%, respectively at soil liquid ratio of 1:20 (w/v) for 5 d, which were more efficient than that by 0.1% of rhamnolipid. The amounts of the bioleached heavy metals by the Burkholderia sp. Z-90 leachate were higher than that by other biosurfactants in the previous studies, although the removal efficiencies of the metals by the leachate were relatively lower. It was suggested that more heavy metals caused more competitive to chelate with function groups of the gross biosurfactants and the metal removal efficiencies by biosurfactants in natural soils were lower than in the artificially contaminated soils. Moreover, the Burkholderia sp. Z-90 leachate facilitated the metals to be transformed to the easily migrating speciation fractions. Additional, the results showed that PAC was efficient in the following flocculation to remove heavy metals in the waste bio-leachates. Our study will provide support for developing a bioleaching technique model to remediate the soils extremely contaminated by heavy metals.
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Affiliation(s)
- Zhihui Yang
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Wei Shi
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Weichun Yang
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Lifen Liang
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Wenbin Yao
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Liyuan Chai
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Shikang Gao
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Qi Liao
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China.
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98
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Assessment of Heavy Metal Pollution in the Sediment of the Main Tributaries of Dongting Lake, China. WATER 2018. [DOI: 10.3390/w10081060] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Heavy metal pollution in sediment is one of the most serious problems in water bodies, including rivers, which can cause secondary pollution when environmental conditions change. In this study, surface sediment samples collected from the four main tributaries of Dongting Lake (i.e., Xiangjiang River (XR), Zishui River (ZR), Yuanjiang River (YR), and Lishui River (LR)) were analyzed for concentrations of Zn, Cr, Cu, As, Cd, and Pb. The spatial distribution, source, and potential ecological risk of these metals were determined. The results suggest a great spatial heterogeneity of heavy metals in the sediment of the studied rivers. Heavy metals had highest concentrations in the sediment of XR, especially midstream and downstream. A principal component analysis (PCA) and correlation analysis indicated that Cd and As were mainly from industrial wastewater and mineral mining, Cr came from natural process and agricultural activities, and Zn and Cu potentially from both. Pb was originated from atmospheric deposition and river inflow transportation. According to the geo-accumulation index ( I g e o ), enrichment factor (EF), and risk index (RI) assessment, heavy metals pollution was highest in the sediment of XR, and Cd was the main pollutant in the sediment of XR, presenting considerable potential ecological risk. This may contribute to heavy metal pollution in Dongting Lake. This paper provides a reference for the aquatic environmental management of heavy metals in Dongting Lake area and its tributaries.
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99
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Chai L, Li Q, Wang Q, Yan X. Solid-liquid separation: an emerging issue in heavy metal wastewater treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:17250-17267. [PMID: 29766423 DOI: 10.1007/s11356-018-2135-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 04/25/2018] [Indexed: 06/08/2023]
Abstract
Solid-liquid separation (SLS) plays a dominant role in various chemical industries. Nowadays, low efficiency of SLS also become a significant problem in heavy metal (HM) wastewater treatment, affecting the effluent quality (HM concentration and turbidity) and overall process economy. In this context, we summarize here the occurrence of solids in HM wastewater, as well as typical SLS operations used in HM wastewater treatment, including sedimentation, flotation, and centrifugation. More important, this article reviews the improvement of the SLS operations by some technologies, including coagulation, flocculation, ballasted method, seeding method, granular sludge strategy, and external field enhancement. It is noted that abiological granular sludge strategy and magnetic field enhancement often possess higher SLS efficiency (faster settling velocity or shorter separation time) than other methods. Hence, the two strategies stand out as promising tools for improving SLS in HM wastewater treatment, but further research is required regarding scalability, economy, and reliability.
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Affiliation(s)
- Liyuan Chai
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- National Engineering Research Center for Heavy Metals Pollution Control and Treatment, Changsha, China
| | - Qingzhu Li
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- National Engineering Research Center for Heavy Metals Pollution Control and Treatment, Changsha, China
| | - Qingwei Wang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- National Engineering Research Center for Heavy Metals Pollution Control and Treatment, Changsha, China
| | - Xu Yan
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China.
- National Engineering Research Center for Heavy Metals Pollution Control and Treatment, Changsha, China.
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100
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Li M, Du Y, Chen L, Liu L, Duan Y. Assessment of trace elements in terminal tap water of Hunan Province, South China, and the potential health risks. ENVIRONMENTAL MONITORING AND ASSESSMENT 2018; 190:318. [PMID: 29717354 DOI: 10.1007/s10661-018-6684-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 04/09/2018] [Indexed: 06/08/2023]
Abstract
A total of 116 terminal tap water (TTW) samples from Xiangjiang, Zijiang, Yuanjiang, and Lishui river basins of Hunan province were collected and concentrations of As, Cd, Cr, Pb, Mn, Zn, Fe, Al, and Cu were determined using inductively coupled plasma mass spectrometry. The results showed that 10% of the water samples exceeded the limit level of Cd established by World Health Organization (WHO) of 0.003 mg L-1. Three percent of the samples had Fe level and 1% had As level above the WHO limits of 0.3 and 0.01 mg L-1, respectively. Multivariate statistic approach (cluster analysis and principal component analysis) results revealed that anthropogenic activities and pipeline corrosion were major sources of TTW contamination in Hunan province. The individual and total hazard quotient values estimated by deterministic and probabilistic approaches were both less than 1. However, the mean cancer risk values of Cd were 2.2 × 10-4 and 1.4 × 10-4 for Xiangjiang and Yuanjiang river basin, respectively, both greater than 10-4. The 95th percentile value of cancer risk for Cr was slightly greater than 10-4 in Xiangjiang river basins. Long-term exposure to Cd and Cr through tap water consumption poses moderate carcinogenic health risks to the local residents.
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Affiliation(s)
- Mansha Li
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China
| | - Yong Du
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China
| | - Lv Chen
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China
| | - Lulu Liu
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China
| | - Yanying Duan
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China.
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