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典型铝塑厂周边土壤重金属分布特征与健康风险评价
Accumulation Characteristics and Health Risk Assessment of Metals around an Plastic Park
投稿时间:2018-09-01  修订日期:2018-12-10
DOI:10.19316/j.issn.1002-6002.2019.05.09
中文关键词:  土壤  重金属  含量特征  健康风险评价  铝塑园区
英文关键词:soils  metal elements  accumulation characteristics  healthy risk assessment  aluminum-plastic park
基金项目:黄河三角洲高效生态经济区(潍坊)海咸水人侵调查与监控预警系统建设项目(鲁勘字【2011】14号)
作者单位
蒙永辉 山东省地质环境监测总站,山东 济南250014 
王集宁 山东省地质环境监测总站,山东 济南250014 
夏青 山东师范大学地理与环境学院, 山东 济南 250358 
刘培渊 山东师范大学地理与环境学院, 山东 济南 250358 
李翠艳 山东师范大学地理与环境学院, 山东 济南 250358 
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中文摘要:
      为探究铝塑园区周边土壤重金属污染情况,选取山东省某城市塑料开发区为研究区,按照分层采样方式获取到80个土壤样品,分别测定土壤中As、Cd、Hg、Cr、Cu、Ni、Pb、Zn含量,运用统计分析法探讨土壤重金属等的分布特征和来源,并利用健康风险评价模型确定了土壤重金属对周边居民的健康风险。结果表明: As、Cd、Hg、Cr、Cu、Ni、Pb和Zn均超出山东省土壤背景值,其中Cd、Hg、Cu和Pb分别超出背景值48.15%、106.90%、62.04%和39.96%,表明土壤中存在一定程度的重金属积累,在周边140~210 m处最为严重,且受人类活动影响强烈,与风向关系不大; 土壤重金属垂直分布特征大致呈现随着深度的增加不断增加,在20 cm深度附近达到最高值,其后不断降低并趋于平稳,Cd、Hg、Cu、Pb和Zn变异幅度大,受到人为干扰较大,As、Cr和Ni主要受成土母质控制,属于自然来源,变动幅度较小; 研究区内8种元素不存在非致癌风险,Cr、 As、Ni 和Cd产生的致癌风险处在可接受范围内,但存在的潜在致癌风险应引起足够的重视。
英文摘要:
      In order to investigate the metals contamination in the soil around the aluminum-plastic park, a plastic development zone in a certain city of Shandong Province was selected as the study area, and 80 soil samples were obtained using the stratified sampling methods. The contents of As, Cd, Hg, Cr, Cu, Ni, Pb and Zn in the soil were determined, and their distribution characteristics and sources were studied by multivariate statistical analysis. The health risk assessment model was used to access the human health risks for surrounding residents caused by heavy metals in the soil. The results showed that heavy metals of As, Cd, Hg, Cr, Cu, Ni, Pb and Zn were all exceeded the soil background value of Shandong Province, among Cd, Hg, Cu and Pb exceeded the background value of 48.15%, 106.90%. 62.04% and 39.96% respectively, indicating that there is a certain degree of heavy metals accumulation in the soil, and it is the most serious at the distance of 140-210 m from the central aluminum-plastic factory, which is strongly influenced by the human activity and has little relationship with the wind direction. The vertical distribution characteristics of soil metals generally increased with the increase of depth, reached the highest value near 20 cm depth, and then decreased continuously and stabilized. Cd, Hg, Cu, Pb and Zn had large variation range and were subjected to human interference. As, Cr and Ni were mainly controlled by the parent material, which belongs to the natural source and had a small variation. There were no non-carcinogenic risks in the eight heavy metals elements in the study area. The carcinogenic risks of Cr, As, Ni and Cd were within the acceptable range, but the existing potential carcinogenic risk should be paid enough attention.
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