Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
Chemosphere. 2018 Apr;197:325-335. doi: 10.1016/j.chemosphere.2018.01.043. Epub 2018 Jan 12.
Ziya Circular Economy Park is the biggest e-waste recycle park in North China before 2011, its function was then transformed in response to regulations and rules. In this paper, investigation was conducted to research the residual concentrations of 14 analytes (12 heavy metals and 2 non-metals) in the surface soil of Ziya Circular Economy Park and surrounding area. Both ecological and health assessments were evaluated using GI (geo-accumulation index) and NPI (Nemerow pollution index), and associated health risk was assessed by using USEPA model. According to the ecological risk assessment, Cu, Sb, Cd, Zn and Co were seriously enriched in the soil of the studied area. The health risk assessment proposed by USEPA indicated no significant health risks to the population. Soil properties, such as pH and organic matter, were found to correlate with the enrichment of heavy metals. Arsenic concentrations in the soil were found positively correlated to dead bacteria concentrations. Spatial distribution of heavy metals revealed that Ziya Circular Economy Park was the dominant pollution source in the studied area. Findings in this study suggest that enough attention should be payed to the heavy metal pollution in Ziya Circular Economy Park.
Ziyá 循环经济园区是 2011 年以前华北地区最大的电子废物回收园区，其功能随后根据规定和法规进行了转变。本文对 Ziyá 循环经济园区及周边地区表层土壤中 14 种分析物（12 种重金属和 2 种非金属）的残留浓度进行了调查研究。利用 GI（地积累指数）和 NPI（内梅罗污染指数）对生态和健康进行了评估，并采用 USEPA 模型评估了相关健康风险。根据生态风险评估，Cu、Sb、Cd、Zn 和 Co 在研究区域的土壤中严重富集。USEPA 提出的健康风险评估表明，该人群不存在显著的健康风险。土壤性质，如 pH 值和有机质，被发现与重金属的富集有关。土壤中砷的浓度与死细菌浓度呈正相关。重金属的空间分布表明，Ziyá 循环经济园区是研究区域的主要污染源。本研究结果表明，应高度重视 Ziyá 循环经济园区的重金属污染问题。
