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Kong F, Wang C, Peng S, Chen Z, Huang Y, Zhang J, Wang J, Wang D. CRISPR-Hg: Rapid and visual detection of Hg 2+ based on PCR coupled with CRISPR/Cas12a. Talanta 2024; 277:126379. [PMID: 38852343 DOI: 10.1016/j.talanta.2024.126379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 05/15/2024] [Accepted: 06/05/2024] [Indexed: 06/11/2024]
Abstract
Mercury (Hg) is a notorious toxic heavy metal, causing neurotoxicity and liver damage, posing grave threats to human health and environmental safety. There is an urgent imperative for developing novel Hg2+ detection methods. In this work, we developed a CRISPR-based method for Hg2+ detection named CRISPR-Hg. A CRISPR/Cas12a system was employed and could be activated by the PCR product, generating fluorescence signals based on the trans-cleavage activity. CRISPR-Hg exhibited remarkable selectivity and specificity, achieving a detection limit of 10 pM and minimal interference with background signals. This approach has been successfully applied to detect Hg2+ in real samples, including water, soil, and mushroom. Ulteriorly, a portable device was devised to streamline the readout of fluorescence signals by a smartphone within 30 min. We offer an affordable, highly selective and visually interpretable method for Hg2+ detection, with the potential for broad application in Hg2+ monitoring for food safety and public health.
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Affiliation(s)
- Fange Kong
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, 130118, China.
| | - Chunxia Wang
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, 130118, China.
| | - Shichao Peng
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, 130118, China.
| | - Zhengrui Chen
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, 130118, China.
| | - Yibing Huang
- School of Life Sciences, Jilin University, Changchun, 130012, China.
| | - Jicheng Zhang
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, United States.
| | - Jiasi Wang
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China.
| | - Di Wang
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, 130118, China.
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2
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Lei B, Wang X, Wang L, Kang Y, Wan T, Li W, Yang Q, Zhang J. Combining chemical analysis and toxicological methods to access the ecological risk of complex contamination in Daye Lake. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 944:173690. [PMID: 38825198 DOI: 10.1016/j.scitotenv.2024.173690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 05/14/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
As one of the nine primary non-ferrous metal smelting bases in China, Daye Lake basin was polluted due to diverse human activities. But so far the pollution status and related ecological risks of this region have not been detailly investigated. In current study, pollutants including heavy metals, polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs) in eight sediment samples from Daye Lake were quantified. 18S rRNA gene sequencing was employed to profile the nematode community structure within these sediments. Model organism Caenorhabditis elegans (C. elegans) were further applied for a comprehensive ecological risk assessment of Daye Lake. Notably, Cadmium (Cd) was identified as a key driver of ecological risk, reaching an index of 1287.35. At sample point S4, OCPs particularly p,p'-DDT, displayed an extreme ecological risk with a value of 23.19. Cephalobidae and Mononchida showed strong sensitivity to pollutant levels, reinforcing their suitability as robust bioindicators. The composite pollutants in sampled sediments caused oxidative stress in C. elegans, with gene Vit-2 and Mtl-1 as sensitive biomarkers. By employing the multiple analysis methods, our data can offer valuable contributions to environmental monitoring and health risk assessment for composite polluted areas.
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Affiliation(s)
- Bo Lei
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Xin Wang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Ling Wang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Yue Kang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Tianying Wan
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Wenjuan Li
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Qingqing Yang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Jie Zhang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
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3
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Zhang K, Chang S, Tu X, Wang E, Yu Y, Liu J, Wang L, Fu Q. Heavy metals in centralized drinking water sources of the Yangtze River: A comprehensive study from a basin-wide perspective. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133936. [PMID: 38479139 DOI: 10.1016/j.jhazmat.2024.133936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 04/07/2024]
Abstract
Water quality in the Yangtze River Basin (YRB) has received considerable attention because it supplies water to 400 million people. However, the trends, sources, and risks associated with heavy metals (HMs) in water of centralized drinking water sources (CDWSs) in the YRB region are not well understood due to the lack of high-frequency, large-scale monitoring data. Moreover, research on the factors affecting the transportation of HMs in natural water are limited, all of which significantly reduce the effectiveness of CDWSs management. Therefore, this study utilized data on 11 HMs and water quality from 114 CDWSs, covering 71 prefecture-level cities (PLC) in 15 provinces (cities), to map unprecedented geospatial distribution of HMs in the YRB region and examine their concentrations in relation to water chemistry parameters. The findings revealed that the frequency of detection (FOD) of 11 HMs ranged from 28.59% (Hg) to 99.64% (Ba). The mean concentrations are ranked as follows: Ba (40.775 μg/L) > B (21.866 μg/L) > Zn (5.133 μg/L) > V (2.668 μg/L) > Cu (2.049 μg/L) > As (1.989 μg/L) > Mo (1.505 μg/L) > Ni (1.108 μg/L) > Sb (0.613 μg/L) > Pb (0.553 μg/L) > Hg (0.002 μg/L). Concentrations of Zn, As, Hg, Pb, Mo, Sb, Ni, and Ba exhibited decreasing trends from 2018 to 2022. Human activities, including industrial and agricultural production, have led to higher pollution levels in the midstream and downstream of the river than in its upstream. Additionally, the high concentrations of Ba and B are influenced by natural geological factors. Anion concentrations and nutrient levels, play a significant role in the transport of HMs in water. Probabilistic health risk assessment indicates that As, Ba, and Sb pose a potential carcinogenic risk. Additionally, non-carcinogenic risk to children under extreme conditions should also be considered.
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Affiliation(s)
- Kunfeng Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Elite Engineers School, Harbin Institute of Technology, Harbin 150080, China; Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450000, China; School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China.
| | - Sheng Chang
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Xiang Tu
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Enrui Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Yanling Yu
- Elite Engineers School, Harbin Institute of Technology, Harbin 150080, China; Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450000, China; School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China.
| | - Jianli Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Lu Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Qing Fu
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
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4
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Cui X, Yang Y, Wang J, Cheng Z, Wang X, Khan KY, Xu S, Yan B, Chen G. Pyrolysis of exhausted biochar sorbent: Fates of cadmium and generation of products. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 920:170712. [PMID: 38325461 DOI: 10.1016/j.scitotenv.2024.170712] [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: 11/24/2023] [Revised: 01/11/2024] [Accepted: 02/03/2024] [Indexed: 02/09/2024]
Abstract
Biochar is a promising sorbent for Cd removal from water, while the disposal of the exhausted Cd-enriched biochar remains a challenge. In this study, pyrolysis was employed to treat the exhausted biochar under N2 and CO2 atmospheres at 600-900 °C, and the fate of Cd during pyrolysis and characteristics of high-valued products were determined. The results indicated that higher temperature and CO2 atmosphere favored the volatilization of Cd. Based on the toxicity characteristic leaching procedure (TCLP) results, the pyrolysis treatment under both atmospheres enhanced the stability of Cd, and the leached Cd concentration of regenerated biochar obtained at high temperatures (>800 °C) was lower than 1 mg/L. Compared with the pristine biochar, the regenerated biochar demonstrated higher carbon content and pH, whereas the contents of oxygen and hydrogen declined, and exhibited promising sorption properties (35.79 mg/g). The atmosphere played an important role in modifying biochar properties and syngas composition. The N2 atmosphere facilitated CH4 production, whereas the CO2 atmosphere increased the proportion of CO. These results implied that pyrolysis can be a valuable and environmental-friendly strategy for the treatment and reuse of exhausted biochar sorbent.
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Affiliation(s)
- Xiaoqiang Cui
- School of Environmental Science and Engineering, Tianjin Key lab of Biomass Waste Utilization, Tianjin University, Tianjin 300072, China
| | - Yuxin Yang
- School of Environmental Science and Engineering, Tianjin Key lab of Biomass Waste Utilization, Tianjin University, Tianjin 300072, China
| | - Jiangtao Wang
- School of Environmental Science and Engineering, Tianjin Key lab of Biomass Waste Utilization, Tianjin University, Tianjin 300072, China
| | - Zhanjun Cheng
- School of Environmental Science and Engineering, Tianjin Key lab of Biomass Waste Utilization, Tianjin University, Tianjin 300072, China.
| | - Xutong Wang
- Nuclear and Radiation Safety Center, Ministry of Ecology and Environment, Beijing 100082, China.
| | - Kiran Yasmin Khan
- Key Laboratory of Advanced Process Control for Light Industry, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Shiwei Xu
- Beijing Capital Eco-Environment Protection Group Co., Ltd., Beijing 100044, China
| | - Beibei Yan
- School of Environmental Science and Engineering, Tianjin Key lab of Biomass Waste Utilization, Tianjin University, Tianjin 300072, China
| | - Guanyi Chen
- School of Environmental Science and Engineering, Tianjin Key lab of Biomass Waste Utilization, Tianjin University, Tianjin 300072, China; School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
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5
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Han X, Wu H, Li Q, Cai W, Hu S. Assessment of heavy metal accumulation and potential risks in surface sediment of estuary area: A case study of Dagu river. MARINE ENVIRONMENTAL RESEARCH 2024; 196:106416. [PMID: 38394977 DOI: 10.1016/j.marenvres.2024.106416] [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: 12/15/2023] [Revised: 01/31/2024] [Accepted: 02/18/2024] [Indexed: 02/25/2024]
Abstract
Soil/sediment samples of four different land types were collected from aquaculture land, farmland, industrial land and river bottom sediment in the estuary area of Dagu River. The contents of Cr, Cu, Zn, As, Cd and Pb in 0-30 cm inner surface samples were detected, and the distribution characteristics of heavy metal content in surface soil/sediment of different land use types in the estuary area were analyzed. Local accumulation index method, potential risk index evaluation method and principal component analysis method were used to analyze the pollution status and sources of heavy metals. The results showed that the heavy metal accumulation levels in soil and sediment samples in the study area were As > Cd > Cu > Pb > Zn > Cr, and the heavy metal content exceeded the soil background value in Shandong Province, but the potential risks were all in a low risk state. The main sources of Cr, Zn and As are transportation sources and natural sources, while the main sources of Cd and Pb are agricultural.
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Affiliation(s)
- Xiran Han
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China
| | - Hao Wu
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China
| | - Qingyu Li
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China
| | - Wenrui Cai
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China
| | - Shuya Hu
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China.
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6
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Yin H, Wang C, Guo H, Li X, Liu J. The mechanism of nickel-induced autophagy and its role in nephrotoxicity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 273:116150. [PMID: 38430579 DOI: 10.1016/j.ecoenv.2024.116150] [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: 10/27/2023] [Revised: 02/14/2024] [Accepted: 02/22/2024] [Indexed: 03/04/2024]
Abstract
Nickel (Ni), an environmental health hazard, is nephrotoxic to humans, but the exact mechanism is unknown. This study aims to identify whether nephrotoxicity is associated with autophagy. Here, nickel chloride (NiCl2) increased autophagy in TCMK-1 cells. NiCl2 induces autophagy through Akt and AMPK/mTOR pathways. Next, oxidative stress was investigated in NiCl2-induced autophagy. The findings demonstrated that the antioxidant (NAC) or mitochondrial targeted antioxidant (Mito-TEMPO) attenuated NiCl2-induced autophagy, reversed the influence on AMPK-mTOR and Akt pathways. Additionally, our study examined the role of autophagy in NiCl2-induced nephrotoxicity. Autophagy inhibition with 3-MA could inhibit cell viability and increase apoptosis in the TCMK-1 cells, however, autophagy promotion with rapamycin relieved cytotoxicity and decreased apoptosis. Additionally, co-treatment with Z-VAD-FMK reduced cytotoxicity, but did not affect autophagy. Besides, NiCl2 can increase the level of mitophagy in vivo and vitro. Mitophagy inhibition could inhibit cell viability and increase apoptosis in the TCMK-1 cells, whereas, promotion of mitophagy could increase cell viability and decrease apoptosis. In summary, above-mentioned results showed that NiCl2 induces autophagy in TCMK-1 cells through oxidative stress-dependent AMPK/AKT-mTOR pathway, autophagy plays a role in reducing NiCl2-induced renal toxicity, and a major mechanism in autophagy's inhibitory effect on NiCl2-induced apoptosis may be mitophagy.
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Affiliation(s)
- Heng Yin
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
| | - Chengbi Wang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
| | - Hongrui Guo
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Xiaocong Li
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
| | - Jingbo Liu
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China.
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Zhao Y, Zhao S, Shi X, Lu J, Cui Z, Yu H, Ye B, Li X. Influence of environmental factors on changes in the speciation of Pb and Cr in sediments of Wuliangsuhai Lake, during the ice-covered period. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:116. [PMID: 38478189 DOI: 10.1007/s10653-023-01842-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 12/19/2023] [Indexed: 04/12/2024]
Abstract
Ecological pollution caused by heavy metals released from sediments is a worldwide concern. However, the effect of changes in sediment speciation on their release of heavy metals has not been adequately reported. In this study, the research focused on Pb and Cr in the ice period of Wuliangsuhai. This study analyzed changes in the sediment speciation of Pb and Cr before and after a release experiment using four risk assessment methods while varying the temperature, pH, and salinity of the water column. The results indicated that the total concentration of Pb ranged from 11.17 to 24.25 mg/kg, while for Cr it ranged from 42.26 to 69.68 mg/kg. Both elements exhibited mild contamination. The release of Pb and Cr from sediments increases with increasing water temperature, mainly due to the conversion of the residual fraction of Pb to the Fe-Mn oxide fraction and Cr converting more residual fraction to the organic matter and sulfide fraction. The release of sediment Pb and Cr decreased with increasing pH, with Pb converting more acid extractable fraction to the residual fraction and Cr converting more organic matter and sulfide fraction to the residual fraction. In contrast, the release of Pb and Cr increased and then decreased with increasing salinity. For Pb, the acid extractable fraction was more susceptible to conversion to the residual fraction by environmental influences, whereas for Cr, the organic matter and sulfide fraction were susceptible to conversion to the residual fraction.
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Affiliation(s)
- Yunxi Zhao
- Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - Shengnan Zhao
- Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, 010018, China.
- Inner Mongolia Water Resource Protection and Utilization Key Laboratory, Hohhot, 010018, China.
| | - Xiaohong Shi
- Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, 010018, China
- Inner Mongolia Water Resource Protection and Utilization Key Laboratory, Hohhot, 010018, China
- State Gauge and Research Station of Wetland Ecosystem, Wuliangsuhai Lake, Inner Mongolia, Bayannur, 014404, China
| | - Junping Lu
- Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, 010018, China
- Inner Mongolia Water Resource Protection and Utilization Key Laboratory, Hohhot, 010018, China
| | - Zhimou Cui
- Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - Haifeng Yu
- Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - Bowen Ye
- Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - Xingyue Li
- Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, 010018, China
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Tang S, Gong J, Song B, Cao W, Li J. Remediation of biochar-supported effective microorganisms and microplastics on multiple forms of heavy metals in eutrophic lake. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133098. [PMID: 38064949 DOI: 10.1016/j.jhazmat.2023.133098] [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: 09/01/2023] [Revised: 11/21/2023] [Accepted: 11/23/2023] [Indexed: 02/08/2024]
Abstract
In mineral-rich areas, eutrophic lakes are at risk of HMs pollution. However, few papers focused on the repair of HMs in eutrophic environment. Our study analyzed multiple forms of HMs, pore structure and microbial responses in the water-sediment system of eutrophic lake treated with biochar, Effective Microorganisms (EMs) or/and microplastics (MPs). As biochar provided an ideal carrier for EMs, the remediation of biochar-supported EMs (BE) achieved the greatest repairment that improved the bacterial indexes and greatly decreased the most HMs in various forms across the water-sediment system, and it also reduced metal mobility, bioavailability and ecological risk. The addition of aged MPs (MP) stimulated the microbial activity and significantly reduced the HMs levels in different forms due to the adsorption of biofilms/EPS adhered on MPs, but it increased metals mobility and ecological risks. The strong adsorption and high mobility of aged MPs would increase enrichment of HMs and cause serious ecological hazards. The incorporation of BE and MP (MBE) also greatly reduced the HMs in full forms, which was primarily ascribed to the adsorption of superfluous biofilms/EPS, but it distinctly depressed the microbial activity. The single addition of biochar and EMs resulted in the inability of HMs to be adsorbed due to the preferentially adsorption of dissolved nutrients and the absence of effective carrier, respectively. In the remediation cases, the remarkable removal of HMs was principally accomplished by the adsorption of HMs with molecular weight below 100 kDa, especially 3 kDa ∼100 kDa, which had higher specific surfaces and abundant active matters, resulting in higher adsorption onto biofilms/EPS.
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Affiliation(s)
- Siqun Tang
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
| | - Jilai Gong
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China.
| | - Biao Song
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
| | - Weicheng Cao
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
| | - Juan Li
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
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9
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Ding R, Wei D, Wu Y, Liao Z, Lu Y, Chen Z, Gao H, Xu H, Hu H. Profound regional disparities shaping the ecological risk in surface waters: A case study on cadmium across China. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133450. [PMID: 38198868 DOI: 10.1016/j.jhazmat.2024.133450] [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: 11/26/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 01/12/2024]
Abstract
The scientific advancement of water quality criteria (WQC) stands as one of the paramount challenges in ensuring the security of aquatic ecosystem. The region-dependent species distribution and water quality characteristics would impact the toxicity of pollutant, which would further affect the derivation of WQC across regions. Presently, however, numerous countries adhere to singular WQC values. The "One-size-fits-all" WQC value for a given pollutant may lead to either "over-protection" or "under-protection" of organisms in specific region. In this study, we used cadmium(Cd) pollution in surface waters of China as a case study to shed light on this issue. This study evaluated critical water quality parameters and species distribution characteristics to modify WQC for Cd across distinct regions, thus unveiling the geographical variations in ecological risk for Cd throughout China. Notably, regional disparities in ecological risk emerged a substantial correlation with water hardness, while species-related distinctions magnified these regional variations. After considering the aforementioned factors, the variation in long-term WQC among different areas reached 84-fold, while the divergence in risk quotient extended to 280-fold. This study delineated zones of both heightened and diminished ecological susceptibility of Cd, thereby establishing a foundation for regionally differentiated management strategies.
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Affiliation(s)
- Ren Ding
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, China
| | - Dongbin Wei
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yinhu Wu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, China
| | - Zitong Liao
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yun Lu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, China
| | - Zhuo Chen
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, China
| | - Huanan Gao
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, China
| | - Hongwei Xu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, China
| | - Hongying Hu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, China; Research Institute for Environmental Innovation (Suzhou), Tsinghua, Suzhou 215163, China.
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10
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Chen Q, Wu L, Zhou C, Liu G, Yao L. A study of environmental pollution and risk of heavy metals in the bottom water and sediment of the Chaohu Lake, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:19658-19673. [PMID: 38361101 DOI: 10.1007/s11356-024-32141-3] [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: 07/26/2023] [Accepted: 01/18/2024] [Indexed: 02/17/2024]
Abstract
Most of the existing research for heavy metals in water at present is focusing on surface water. However, potential environmental risk of heavy metals in the bottom water of lakes cannot be ignored. In this study, the content, distribution, and speciation of nine heavy metals (As, V, Cr, Co, Ni, Cu, Zn, Cd, and Pb) in the bottom water and sediment of Chaohu Lake were studied. Some pollution assessment methods were used to evaluate the environmental effect of heavy metals. Positive matrix factorization was conducted to investigate the potential sources of heavy metals in sediment. The contents of heavy metals in the bottom water of Chaohu Lake mean that its environmental pollution can be ignored. In sediment, Cd and Zn have showed stronger ecological risk. pH and redox potential are more likely to affect the stability of heavy metals in the bottom water of Chaohu Lake during the dry reason. Industrial sources (16%) are no longer the largest source of heavy metal pollution; traffic sources (33.6%) and agricultural sources (23.4%) have become the main sources of pollution at present. This study can provide some support and suggestions for the treatment of heavy metals in lakes.
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Affiliation(s)
- Qiang Chen
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China
| | - Lei Wu
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.
- Anhui Provincial Academy of Eco-Environmental Science Research, Hefei, 230061, Anhui, China.
- CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, Anhui, China.
| | - Chuncai Zhou
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China
| | - Gang Liu
- Chaohu Administration Environmental Protection Monitoring Station, Hefei, 238000, Anhui, China
| | - Long Yao
- Chaohu Administration Environmental Protection Monitoring Station, Hefei, 238000, Anhui, China
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Yu Z, Sun Z, Liu L, Li C, Zhang X, Amat G, Ran M, Hu X, Xu Y, Zhao X, Zhou J. Environmental surveillance in Jinan city of East China (2014-2022) reveals improved air quality but remained health risks attributable to PM2.5-bound metal contaminants. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 343:123275. [PMID: 38163628 DOI: 10.1016/j.envpol.2023.123275] [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: 11/03/2023] [Revised: 12/22/2023] [Accepted: 12/29/2023] [Indexed: 01/03/2024]
Abstract
PM2.5-bound metal contaminants are associated with multiple chronic diseases in human. At global level, the contamination status has not been well controlled yet. Here we report findings from a long-term air pollution surveillance in Jinan city of Shandong, China. During 2014-2022, the dynamics and trends of PM2.5-bound heavy metal contaminants were monitored in an industrial area and a downtown area. The surveillance targets included: antimony (Sb), aluminum (Al), arsenic (As), beryllium (Be), cadmium (Cd), chromium (Cr), mercury (Hg), lead (Pb), manganese (Mn), nickel (Ni), selenium (Se). The human exposure and health risks were calculated and we found that the health risks of most contaminants showed peak values in autumn and winter. But Al, Mn, Hg and Be were found to result in highest health risk in spring or summer in the downtown area. In the industrial area we identified 100% alarming health index >1 (ranged from 1.12 to 3.35) in autumn and winter. In winter the total non-carcinogenic HI was all above 1 (peak value 2.21). Mn and As together posed >85% non-carcinogenic risk. As and Cd were ranked as major drivers of carcinogenic risks (5.84 × 10-6 and 2.78 × 10-6). Pd and Cd both showed non-negligible environmental levels but risk assessment model for their air-exposure associated non-carcinogenic risks are not yet available. This study updates air pollution data and status for air pollution status in China. This study provides valuable 9 year long-term reference to experimental and field studies in the related fields.
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Affiliation(s)
- Zhigang Yu
- Institute of Physical and Chemical Analysis, Jinan Municipal Center for Disease Control and Prevention, Jinan, Shandong, 250021, China.
| | - Zhan Sun
- Institute of Physical and Chemical Analysis, Jinan Municipal Center for Disease Control and Prevention, Jinan, Shandong, 250021, China.
| | - Lanzheng Liu
- Jinan Municipal Center for Disease Control and Prevention, Jinan, Shandong, 250021, China.
| | - Chao Li
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, 250062, China.
| | - Xin Zhang
- Institute of Physical and Chemical Analysis, Jinan Municipal Center for Disease Control and Prevention, Jinan, Shandong, 250021, China.
| | - Gzalnur Amat
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, China.
| | - Mohan Ran
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, China.
| | - Xiaoyue Hu
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, China.
| | - Yunxiang Xu
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, China.
| | - Xiulan Zhao
- Department of Toxicology and Nutrition, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, China.
| | - Jun Zhou
- Department of Toxicology and Nutrition, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, China.
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Li S, Luo C, Yan F, Yang Y, Guo B, Wang L, Xu S, Wu F, Ji P. Remediation of Pb(II) and Cd(II) in polluted waters with calcium thioglycolate-modified straw biochar. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 338:122638. [PMID: 37775026 DOI: 10.1016/j.envpol.2023.122638] [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: 06/11/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/01/2023]
Abstract
The pollution of water bodies by heavy metals (HMs) such as Pb(II) and Cd(II) poses a serious environmental risk. Herein, rice straw biochar (RBC) modified with calcium thioglycolate was used to remove Pb(II) and Cd(II) from aqueous solutions. The adsorption performance of the modified biochar was investigated via adsorption kinetics and isotherm model fitting. Furthermore, scanning electron microscopy (SEM), X-ray energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) were used to elucidate the modification and adsorption mechanisms. The results showed that the modification process loaded sulfur-containing functional groups, calcium carbonate, and calcium oxalate crystals on the biochar surface, considerably enhancing its complexation performance and ion-exchange capacity. The equilibrium adsorption amounts for Pb(II) and Cd(II) reached 124.92 and 65.44 mg g-1 in unary systems, respectively; they reached 121.34 and 39.43 mg g-1 in a binary Pb(II) and Cd(II), respectively. Moreover, the optimal adsorption conditions were as follows: pH = 6, temperature = 25 °C, dosage = 0.8 g L-1, and contact time = 2 h. In the binary Pb(II) and Cd(II) system, the adsorption process obeyed the Langmuir competitive adsorption model, which means that one adsorption site on the modified biochar was effective for only one heavy-metal ion, and the modified biochar was more selective for Pb(II) than for Cd(II). The adsorption mechanism, which was dominated by chemisorption, mainly involved complexation, precipitation, ion exchange, and cation-π interactions. Meanwhile, adsorption and desorption experiments indicated that the modified biochar exhibited satisfactory recycling performance, demonstrating its feasibility as an inexpensive and efficient heavy-metal adsorbent for polluted water.
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Affiliation(s)
- Shaohua Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Chi Luo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Fan Yan
- Lvliang City Ecological Environmental Protection Bureau, Lvliang, 032100, Shanxi, China
| | - Yue Yang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Bin Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Lu Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Shaoquan Xu
- Qinghai Delingha Agriculture and Animal Husbandry Comprehensive Service Center, Room 304, Jinghuawan Office Building, Chaidamu West Road, Delingha, 817099, Qinghai, China
| | - Feng Wu
- Northwest Bureau of China Metallurgical Geology Bureau, Xi'an, 710119, Shaanxi, China
| | - Puhui Ji
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Su Q, Shahab A, Huang L, Ubaid Ali M, Cheng Y, Yang J, Xu H, Sun Z, Zou Q, Chen Z, Kang B. Heavy Metals in Surface Sediment of Plateau Lakes in Tibet, China: Occurrence, Risk Assessment, and Potential Sources. TOXICS 2023; 11:804. [PMID: 37888655 PMCID: PMC10610607 DOI: 10.3390/toxics11100804] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/21/2023] [Accepted: 09/21/2023] [Indexed: 10/28/2023]
Abstract
Tibetan Plateau lakes have high ecological value and play a crucial role in maintaining ecological balance. This research aimed to study the pollution characteristics, ecological risk, and potential sources of eight heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) in the surface sediments of 12 Tibetan Plateau lakes. The results of the toxicity risk index (TRI) showed that only Gongzhu Tso (28.09) and La' ang Tso (20.25) had heavy metals that could pose a very high risk of toxicity to aquatic organisms. Hg posed the highest potential ecological risk to aquatic organisms. Based on the results of multiple analyses, we inferred that the contents of Cr, Cu, Hg, and Ni in sediments of Tibetan lakes were influenced by industrial and agricultural development; Cd, Pb, and Zn were influenced by transport and atmospheric transport; and As was derived from geothermal activity and rock weathering.
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Affiliation(s)
- Qiongyuan Su
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Asfandyar Shahab
- Guangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Areas, Guilin 541004, China
| | - Liangliang Huang
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541004, China
| | - Muhammad Ubaid Ali
- Department of Soil Sciences, Southern Federal University, 344006 Rostov-on-Don, Russia
| | - Yanan Cheng
- Guangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Areas, Guilin 541004, China
| | - Jiahuan Yang
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Hao Xu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Zhicheng Sun
- College of Fisheries, Ocean University of China, Qingdao 266100, China
| | - Qi Zou
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Zhongbing Chen
- Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech Republic
| | - Bin Kang
- College of Fisheries, Ocean University of China, Qingdao 266100, China
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Li Y, Shen X. Cadmium Exposure Affects Serum Metabolites and Proteins in the Male Guizhou Black Goat. Animals (Basel) 2023; 13:2705. [PMID: 37684969 PMCID: PMC10487163 DOI: 10.3390/ani13172705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/14/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023] Open
Abstract
Food safety and environmental pollution are the hotspots of general concern globally. Notably, long-term accumulation of trace toxic heavy metals, such as cadmium (Cd), in animals may endanger human health via the food chain. The mechanism of Cd toxicity in the goat, a popular farmed animal, has not been extensively investigated to date. Therefore, in this study, ten male goats (Nubian black goat × native black goat) were exposed to Cd via drinking water containing CdCl2 (20 mg Cd·kg-1·BW) for 30 days (five male goats per group). In this study, we used an integrated approach combining proteomics and metabolomics to profile proteins and metabolites in the serum of Cd-exposed goats. It was found that Cd exposure impacted the levels of 30 serum metabolites and 108 proteins. The combined proteomic and metabolomic analysis revealed that Cd exposure affected arginine and proline metabolism, beta-alanine metabolism, and glutathione metabolism. Further, antioxidant capacity in the serum of goats exposed to Cd was reduced. We identified CKM and spermidine as potential protein and metabolic markers, respectively, of early Cd toxicity in the goat. This study details approaches for the early diagnosis and prevention of Cd-poisoned goats.
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Affiliation(s)
- Yuanfeng Li
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China;
| | - Xiaoyun Shen
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China;
- State Key Laboratory of Sheep Genetic Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi 832000, China
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15
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Brodziak-Dopierała B, Fischer A. Analysis of the Mercury Content in Fish for Human Consumption in Poland. TOXICS 2023; 11:717. [PMID: 37624222 PMCID: PMC10457943 DOI: 10.3390/toxics11080717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/08/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023]
Abstract
Mercury (Hg) is a metal with toxic effects on the environment, including living organisms. Organic Hg derivatives readily penetrate biological membranes and pose a particular health risk. Food of aquatic origin is the main source of human exposure to methylmercury (MeHg). In Poland, the consumption of fishery and aquaculture products has been gradually increasing. The aim of this study was to determine the content of Hg in fish intended for human consumption and purchased in Poland. The total Hg content of the edible parts of different species of marine and freshwater fish was analysed. The range of Hg content in all fish was 0.004-0.827 mg/kg, with an arithmetic mean of 0.084 mg/kg. The concentration of Hg in marine fish (0.100 mg/kg) was higher than in freshwater fish (0.063 mg/kg). The highest concentration of Hg was found in tuna. The Estimated Hazard Quotient (EHQ) calculated for the tuna samples analysed was >1. This may represent a potential health risk for consumers. The consumption of the other fish analysed was considered safe on the basis of the EHQ. The Hg content of the analysed fish samples did not exceed the current limits for food.
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Affiliation(s)
| | - Agnieszka Fischer
- Department of Toxicology and Bioanalysis, Faculty of Pharmaceutical Science, Medical University of Silesia, 30 Ostrogórska Str., 41-200 Sosnowiec, Poland;
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He Y, Fang H, Pan X, Zhu B, Chen J, Wang J, Zhang R, Chen L, Qi X, Zhang H. Cadmium Exposure in Aquatic Products and Health Risk Classification Assessment in Residents of Zhejiang, China. Foods 2023; 12:3094. [PMID: 37628093 PMCID: PMC10453627 DOI: 10.3390/foods12163094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
Cadmium (Cd) pollution of food safety is a prominent food safety concern worldwide. The concentration of Cd in six aquatic food categories collected from 2018 to 2022 was analyzed using inductively coupled plasma mass spectrometry, and the Cd exposure levels were calculated by combining the Cd concentration and food consumption data of 18913 urban and rural residents in Zhejiang Province in 2015-2016. The mean Cd concentration was 0.699 mg/kg and the mean Cd exposure of aquatic foods was 0.00951 mg/kg BW/month for the general population. Marine crustaceans were the largest Cd contributor, corresponding to 82.7%. The regional distribution results showed that the average Cd exposure levels of 11 cities did not exceed the provisional tolerable monthly intake (PTMI). According to the subgroups, the Cd mean exposure level of 2-3-year-old children was significantly higher than that of the other age groups but did not exceed the PTMI. Health risk classification assessment demonstrated that the final risk score was six, and the health risk level of Cd exposure in aquatic products in the Zhejiang population was medium. These results demonstrated that the risk of Cd exposure in certain food types or age groups should be given more concern.
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Affiliation(s)
- Yue He
- Department of Nutrition and Food Safety, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China; (Y.H.); (B.Z.); (J.C.); (J.W.); (R.Z.); (L.C.); (H.Z.)
| | - Hangyan Fang
- Hangzhou Linping District Center for Disease Control and Prevention, Hangzhou 311100, China;
| | - Xiaodong Pan
- Department of Physical-Chemistry, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China;
| | - Bing Zhu
- Department of Nutrition and Food Safety, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China; (Y.H.); (B.Z.); (J.C.); (J.W.); (R.Z.); (L.C.); (H.Z.)
| | - Jiang Chen
- Department of Nutrition and Food Safety, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China; (Y.H.); (B.Z.); (J.C.); (J.W.); (R.Z.); (L.C.); (H.Z.)
| | - Jikai Wang
- Department of Nutrition and Food Safety, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China; (Y.H.); (B.Z.); (J.C.); (J.W.); (R.Z.); (L.C.); (H.Z.)
| | - Ronghua Zhang
- Department of Nutrition and Food Safety, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China; (Y.H.); (B.Z.); (J.C.); (J.W.); (R.Z.); (L.C.); (H.Z.)
| | - Lili Chen
- Department of Nutrition and Food Safety, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China; (Y.H.); (B.Z.); (J.C.); (J.W.); (R.Z.); (L.C.); (H.Z.)
| | - Xiaojuan Qi
- Department of Nutrition and Food Safety, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China; (Y.H.); (B.Z.); (J.C.); (J.W.); (R.Z.); (L.C.); (H.Z.)
| | - Hexiang Zhang
- Department of Nutrition and Food Safety, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China; (Y.H.); (B.Z.); (J.C.); (J.W.); (R.Z.); (L.C.); (H.Z.)
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Wan D, Gao J, Song R, Song L, Ning D. Uncertainties in Pollution and Risk Assessments of Heavy Metals in Lake Sediments Using Regional Background Soils in China. TOXICS 2023; 11:613. [PMID: 37505578 PMCID: PMC10383175 DOI: 10.3390/toxics11070613] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/20/2023] [Accepted: 07/03/2023] [Indexed: 07/29/2023]
Abstract
Background soils are frequently utilized as a surrogate to assess pollution levels and environmental risks of heavy metals in Chinese lakes. However, there remains a lack of understanding regarding the reliability and uncertainty of such assessments. Here, we determined heavy metals (As, Cd, Co, Cr, Cu, Hg, Ni, Pb, and Zn) in sediment cores from five rural lakes in North China to evaluate the reliability and uncertainty of the assessments using background soils by comparing them with assessments based on background sediments. Comparative studies reveal large uncertainties in the assessments using background soils. Among these metals, uncertainties for Hg and Cd are relatively large, whereas those for the other metals are minor. This discrepancy is due to the considerably higher natural variability of Hg and Cd in soils and sediments in comparison to the other metals. Generally, assessments utilizing background soils underestimate pollution levels and risks of Hg but overestimate those of Cd in these lakes. Despite limited human activities around the lakes, they still received a considerable influx of heavy metals via regional atmospheric transport. Assessments of the nine metals indicate moderate to considerable ecological risks in these lakes. The risks are contributed primarily (78-89%) by Hg and Cd. This study underscores the substantial uncertainties in assessing heavy metal pollution and risks using regional background soils and emphasizes the importance of controlling atmospheric emissions of Hg and Cd to mitigate pollution in rural and remote water bodies in China.
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Affiliation(s)
- Dejun Wan
- School of Geographical Science, Nantong University, Nantong 226007, China
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China
| | - Jiapeng Gao
- School of Geographical Science, Nantong University, Nantong 226007, China
| | - Ruiting Song
- School of Geographical Science, Nantong University, Nantong 226007, China
| | - Lei Song
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China
| | - Dongliang Ning
- School of Geographical Science, Nantong University, Nantong 226007, China
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18
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Zhang S, Zeng X, Sun P, Ni T. Ecological risk characteristics of sediment-bound heavy metals in large shallow lakes for aquatic organisms: The case of Taihu Lake, China. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 342:118253. [PMID: 37295144 DOI: 10.1016/j.jenvman.2023.118253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/02/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023]
Abstract
Heavy metal contamination in the surface sediments of large shallow lakes in China is becoming increasingly serious. However, more attention has been paid to the human health risk of heavy metals in the past, while little consideration has been given to aquatic organisms. Taking Taihu Lake as an example, we explored the spatial and temporal heterogeneity of the potential ecological risks of seven heavy metals (Cd, As, Cu, Pb, Cr, Ni, and Zn) to species at different taxonomic scales using an improved species sensitivity distribution (SSD) method. The results showed that all six heavy metals, except Cr, were exceeded to some extent compared to background levels, with Cd being the most severe exceedance. Based on the hazardous concentration for 5% of the species (HC5), Cd had the lowest HC5 value, implying the highest ecological risk of toxicity. Ni and Pb had the highest HC5 values and the lowest risk. Cu, Cr, As and Zn were at a relatively moderate levels. For the different groups of aquatic organisms, the ecological risk of most heavy metals was generally lower for vertebrates than for the whole species. The risk for invertebrates and algae was higher than that for all species. Zn and Cu had the highest potentially affected fractions (PAFs) for all classification cases, with mean PAFs of 30.25% and 47.2%, respectively. Spatially, the high ecological risk of sediment heavy metals was significantly related to the spatial characteristics of the type and intensity of human activities in the catchment. Administratively, the environmental quality standards for freshwater sediments proposed by America and Canada are insufficient to protected against the ecological risks of heavy metals in Taihu Lake. In the absence of such standards, China urgently needs to establish an approptiate system of environmental quality standards for heavy metals in lake sediments.
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Affiliation(s)
- Shaoxuan Zhang
- School of Geography and Ocean Science of Nanjing University, Nanjing, 210023, PR China.
| | - Xia Zeng
- School of Geography and Ocean Science of Nanjing University, Nanjing, 210023, PR China.
| | - Ping Sun
- School of Environment, Nanjing University, Nanjing, 210023, PR China.
| | - Tianhua Ni
- School of Geography and Ocean Science of Nanjing University, Nanjing, 210023, PR China.
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Han K, Chen L, Zhang W, Tong Y, Shi J, Su X, Zou X. A ratiometric electrochemical sensor for detecting lead in fish based on the synergy of semi-complementary aptamer pairs and Ag nanowires@zeolitic imidazolate framework-8. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:2199-2209. [PMID: 37114376 DOI: 10.1039/d3ay00196b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
This work describes the synergistic application of semi-complementary aptamer pairs and signals on-off ratio strategies on glassy carbon electrodes (GCE) for detecting lead ions (Pb2+) in fish. Gold nanoparticles (AuPNs) as the electrode substrate can provide added binding sites for the aptamers and improve the conductivity of the electrodes. Pb2+ aptamers containing ferrocene (Fc) molecules act as molecular recognizers in the sensing system. In the presence of target ions, Fc signals are affected by conformational changes of the aptamer. The "Ag nanowires@zeolitic imidazolate framework-8 with methylene blue (AgNWs@ZIF-8/MB)" can be semi-complementary to the Pb2+ aptamer after binding to single-stranded DNA (S1). However, S1/AgNWs@ZIF-8/MB self-assembled with Pb2+ aptamer (Apt) by hybridization incubation was quickly replaced by Pb2+ competitively, resulting in the loss of methylene blue (MB) signaling molecules. Hence, the internal reference signal (MB) and conformation change signal (Fc) comprise the ratio sensing system well. Morphology, spectroscopy, and electrochemistry methods have validated the modification and sensing behaviors. The used Apt has made considerable progress in analytical performance. In interference studies and stability checks, the ratio measurement signal IFc/IMB is a more reliable signal than the single signal readout. Following a log-linear relationship, this sensor provides a wide linear range. Furthermore, the proposed sensor can be used to determine Pb2+ in fish samples, and the results agree with those obtained using ICP-MS and recovery tests.
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Affiliation(s)
- Kuiguo Han
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Liang Chen
- Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Wen Zhang
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yanqun Tong
- Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jiyong Shi
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaoyu Su
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaobo Zou
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
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