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Nakagawa K, Islam MS, Shah SSH, Li Z, Takao Y, Berndtsson R. Relationship between nitrate, heavy metal, and sterols contents in Japanese agricultural soils with risk of groundwater pollution. CHEMOSPHERE 2024; 361:142335. [PMID: 38754494 DOI: 10.1016/j.chemosphere.2024.142335] [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: 02/02/2024] [Revised: 05/11/2024] [Accepted: 05/13/2024] [Indexed: 05/18/2024]
Abstract
In Japanese agricultural lands, nitrate-nitrogen contamination of soil and groundwater often occurs due to the application of livestock excrements and compost. Therefore, rural soils in Japan were sampled and analyzed for nitrate-nitrogen leaching, heavy metal content, and sterols associated with livestock excrement and compost to calculate contamination risk indicators. The results were analyzed using self-organizing maps and cluster analysis. Nitrate-nitrogen content using water extraction was detected in most of the sampled soils. In addition, many samples from areas that were already severely contaminated with nitrate-nitrogen showed particularly high concentrations. Coprostanol, an indicator of fecal contamination, was detected in more than half of the samples. The main source of nitrate-nitrogen contamination in these areas is livestock excrement and compost. Self-organization maps showed that areas with high nitrate-nitrogen contamination also corresponded to areas with high copper and zinc soil contents. The self-organization maps and cluster analysis resulted in five clusters: a nitrate-contaminated group mainly originating from livestock excrement and compost, a heavy metal-contaminated group, a general group, a nitrate-contaminated group mainly originating from chemical fertilizers, and a contaminated group with potentially hazardous substances requiring attention. Authorities and decision-makers can use the results to prioritize areas requiring remediation.
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Affiliation(s)
- Kei Nakagawa
- Institute of Integrated Science and Technology, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan.
| | - M Shahidul Islam
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan; Department of Chemistry, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - Syed Shabbar Hussain Shah
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Zhuolin Li
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Yuji Takao
- Institute of Integrated Science and Technology, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Ronny Berndtsson
- Division of Water Resources Engineering & Centre for Advanced Middle Eastern Studies, Lund University, Box 118, SE-221 00, Lund, Sweden
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Zhang X, Liu H, Li X, Zhang Z, Chen Z, Ren D, Zhang S. Ecological and health risk assessments of heavy metals and their accumulation in a peanut-soil system. ENVIRONMENTAL RESEARCH 2024; 252:118946. [PMID: 38631470 DOI: 10.1016/j.envres.2024.118946] [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: 02/02/2024] [Revised: 04/09/2024] [Accepted: 04/14/2024] [Indexed: 04/19/2024]
Abstract
Heavy metals pollution is a notable threat to environment and human health. This study evaluated the potential ecological and health risks of heavy metals (Cu, Cr, Cd, Pb, Zn, Ni, and As) and their accumulation in a peanut-soil system based on 34 soil and peanut kernel paired samples across China. Soil As and Cd posed the greatest pollution risk with 47.1% and 17.6% of soil samples exceeding the risk screen levels, respectively, with 26.5% and 20.6% of the soil sites at relatively strong potential ecological risk level, respectively, and with the geo-accumulation levels at several soil sites in the uncontaminated to moderately contaminated categories. About 35.29% and 2.94% of soil sites were moderately and severely polluted based on Nemerow comprehensive pollution index, respectively, and a total of 32.4% of samples were at moderate ecological hazard level based on comprehensive potential ecological risk index values. The Cd, Cr, Ni, and Cu contents exceeded the standard in 11.76, 8.82, 11.76 and 5.88% of the peanut kernel samples, respectively. Soil metals posed more health risks to children than adults in the order As > Ni > Cr > Cu > Pb > Zn > Cd for non-carcinogenic health risks and Ni > Cr ≫ Cd > As > Pb for carcinogenic health risks. The soil As non-cancer risk index for children was greater than the permitted limits at 14 sites, and soil Ni and Cr posed the greatest carcinogenic risk to adults and children at many soil sites. The metals in peanut did not pose a non-carcinogenic risk according to standard. Peanut kernels had strong enrichment ability for Cd with an average bio-concentration factor (BCF) of 1.62. Soil metals contents and significant soil properties accounted for 35-74% of the variation in the BCF values of metals based on empirical prediction models.
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Affiliation(s)
- Xiaoqing Zhang
- College of Resource and Environmental Engineering, Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resource, Wuhan University of Science and Technology, Wuhan, 430081, PR China.
| | - Huanhuan Liu
- College of Resource and Environmental Engineering, Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resource, Wuhan University of Science and Technology, Wuhan, 430081, PR China.
| | - Xin Li
- Baowu Water Technology Co., Ltd. Wuhan Branch, 430081, PR China.
| | - Zhaowei Zhang
- School of Bioengineering and Health, State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, 430200, PR China.
| | - Zhihua Chen
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Xinxiang, 453007, PR China.
| | - Dajun Ren
- College of Resource and Environmental Engineering, Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resource, Wuhan University of Science and Technology, Wuhan, 430081, PR China.
| | - Shuqin Zhang
- College of Resource and Environmental Engineering, Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resource, Wuhan University of Science and Technology, Wuhan, 430081, PR China.
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Chen D, Yang S, Jiang Z, Wang Z, Wang Z, Tian H. Spatial distribution, ecological risk and health risk assessment of heavy metals in agricultural soil from Ankang basin, Shaanxi Province. Heliyon 2023; 9:e22580. [PMID: 38046143 PMCID: PMC10687698 DOI: 10.1016/j.heliyon.2023.e22580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 12/05/2023] Open
Abstract
In order to assess the heavy metal pollution features, ecological dangers, and health risk status posed to human beings by soils in the Ankang Basin, a study was conducted. This involved the collection of 38 surface soil samples, followed by the determination of elemental levels of arsenic, mercury, copper, cadmium, lead, chromium, nickel, and zinc. The concentrations of arsenic, mercury, copper, cadmium, lead, chromium, nickel, and zinc were quantified through the collection of 38 surface soil samples. The data obtained from the study was subjected to analysis and evaluation utilizing various academic methodologies, including the geo-accumulation index method, potential ecological risk assessment method, human health risk assessment model, and Monte Carlo simulation method. The findings indicated that the concentrations of the eight heavy metals in the soil above the background levels, with only Cadmium (Cd) marginally surpassing the threshold set for controlling soil pollution risks. The ground accumulation index revealed a higher degree of soil pollution with mercury, cadmium, copper, and zinc components. According to the possible ecological risk index, the presence of mercury and cadmium elements poses significant ecological hazards. The geographical distribution analysis suggests that these risks mostly stem from the combined impacts of human activities and the topographical and geomorphological characteristics of the river valley. The findings of the human health risk assessment indicated that the non-carcinogenic risk fell within acceptable limits. Additionally, it was observed that the carcinogenic risk associated with arsenic, mercury, cadmium, and nickel was comparatively greater for children as compared to adults. The results of the Monte Carlo simulations indicate that the non-carcinogenic hazards have a negligible effect on human health. However, it was seen that arsenic and nickel have a greater likelihood of presenting a substantial carcinogenic risk to humans, particularly in relation to the pediatric population, hence exerting a more pronounced impact on their health. In general, it is observed that conventional deterministic risk assessments tend to overstate the potential health risks associated with a given situation. Conversely, the utilization of Monte Carlo simulations has been found to effectively mitigate uncertainties in health risk assessments. It has been observed that children exhibit a higher vulnerability to both carcinogenic and non-carcinogenic health impacts resulting from exposure to heavy metals present in soil, in comparison to adults. It is recommended that residents prioritize the surveillance of soil heavy metals in relation to potential impacts on human health.
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Affiliation(s)
- Daokun Chen
- Xi'an Center of Mineral Resources Survey, China Geological Survey, Xi'an 710100 China
- School of Earth and Environment, Anhui University of Science & Technology, Huainan 232001 China
| | - Shengfei Yang
- Xi'an Center of Mineral Resources Survey, China Geological Survey, Xi'an 710100 China
| | - Zhiyang Jiang
- School of Earth and Environment, Anhui University of Science & Technology, Huainan 232001 China
| | - Zhirui Wang
- Xi'an Center of Mineral Resources Survey, China Geological Survey, Xi'an 710100 China
| | - Zhanbin Wang
- Xi'an Center of Mineral Resources Survey, China Geological Survey, Xi'an 710100 China
| | - Hui Tian
- Xi'an Center of Mineral Resources Survey, China Geological Survey, Xi'an 710100 China
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Du Z, Tian Z, Yin Y, Wei J, Mu Y, Cai J, Song Z, Cen K. Bioavailability-based risk assessment of various heavy metals via multi-exposure routes for children and teenagers in Beijing, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:114985-115002. [PMID: 37878177 DOI: 10.1007/s11356-023-30436-5] [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: 07/19/2023] [Accepted: 10/09/2023] [Indexed: 10/26/2023]
Abstract
Assessing the health risks of sensitive population, such as children and teenagers, through multiple exposure routes (MERs) such as ingestion, inhalation, and dermal contact is critical for policy creation that protects or reduces exposure to pollutants for all populations. Heavy metal (HM) contents in food and environmental media in Beijing, capital of China, were collected. Furthermore, on the basis of considering the bioavailability of HMs, we evaluated the multiple environmental routes and health risks to HMs in children and teenagers of eight age groups (2-<3, 3-<4, 4-<5, 5-<6, 6-<9, 9-<12, 12-<15, and 15-<18) in Beijing, China by Monte Carlo simulation approach. The main findings are as follows: lead exposure in children aged 2-<3 years exceeds the exposure dose (0.3 μg·kg-1·d-1) of 0.5 point reduction in intelligence quotient. Moreover, children aged 2-<3 and 6-<9 years have relatively high non-carcinogenic risk (NCR) of 1.32 and 1.30, respectively. The carcinogenic risk (CR) for children aged 6-<9 and 9-<12 years is 2.73×10-6 and 2.39×10-6, respectively. Specifically, the contributions of oral ingestion, dermal contact, and inhalation to the NCR were 69.5%, 18.9%, and 11.6%, respectively. Moreover, the combined NCR contributions of copper, cadmium, mercury, and arsenic (As) were about 69.4%. The contributions of the above three routes to the CR were 93.4%, 4.1%, and 2.5%, in that order, with the largest CR contribution of As being about 92.0%. This study can provide new ideas for accurately assessing the exposure and health risks of HMs in the population, and we believe that it is necessary to update the national standards for food and soil based on the bioavailability of HMs.
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Affiliation(s)
- Zhongwen Du
- Baoding University of Technology, Baoding, 071000, China
| | - Zuguang Tian
- Baoding Productivity Promotion Center, Baoding, 071000, China
| | - Yelan Yin
- No. 4 Drilling Engineering Branch Company, CNPC Bohai Drilling Engineering Company Limited, Hejian, 062400, Hebei, China
| | - Junxiao Wei
- School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang, 524088, China.
| | - Yue Mu
- Chongqing Key Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Southwest University, Chongqing, 400715, China
| | - Jianjun Cai
- School of Architecture and Traffic, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Zefeng Song
- Institute of Resources and Environmental Engineering, Hebei GEO University, Shijiazhuang, 050031, China
| | - Kuang Cen
- School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing, 100083, China
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