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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Analysis of Heavy Metal Contamination of Agricultural Soils and Related Effect on Population Health—A Case Study for East River Basin in China
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Analysis of Heavy Metal Contamination of Agricultural Soils and Related Effect on Population Health—A Case Study for East River Basin in China

机译：农业土壤重金属污染及其对人口健康的影响分析-以中国东部流域为例

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To understand the heavy metal pollution in agricultural soils along the East River basin and assess the pollution related health effect to local residents, interviews and archived data were obtained to identify the study sites affected by polluted tailing. Soil samples were collected and tested for heavy metal content and the Comprehensive Pollution Index (CPI). The degree of pollution of agricultural soils in the area was assessed using GIS-based Spatial distribution map of heavy metals and the trend of soil heavy metal risk. Two villages (Matian and Zhudui) near the East River were included in this study for health effect assessment. A total of 193 residents aged 15 or above from each village were tested for the present status of chronic diseases. Convenient sampling method was used to collect blood samples from 78 residents for heavy metal concentration. The contents of Pb, Cd, As, Zn, and Cu in the agricultural soils were all over the standards with a moderate to severe CPI. Among these metals, Cd was the highest followed by Pb, and Cu was the lowest. The contents of Pb, Cd, As, and Zn tend to be higher in soils closer to the river. The prevalence of chronic diseases was over 30%, which is significantly higher than the report from the national central region (23.15%). The average blood lead level (BLL) among children under 14 years is 7.42 μg/dL. Although the adults in Matian village had a significantly higher BLL (χ = 8.70, = 0.03) as compared to Zhudui village, there was no significant difference for the prevalence of chronic diseases between the two villages (χ = 3.23, = 0.09). The mean BLL of children and the proportion of children with BLL ≥ 10 µg/dL in this study are equivalent to the national average. The higher BLL concentration and prevalence of chronic diseases in adults might be due to their long-term exposure to heavy metal contamination environment and higher background level of heavy metals. Findings from this study will form the baseline information for local government to the development of effective approaches to control the heavy metal contamination and reduce the pollution related adverse health effect on local residents.
机译：为了了解东部流域农业土壤中的重金属污染并评估对当地居民的污染相关健康影响，获得了访谈和存档数据，以确定受尾矿污染的研究地点。收集土壤样品并测试重金属含量和综合污染指数（CPI）。利用基于GIS的重金属空间分布图和土壤重金属风险趋势，评估了该地区农业土壤的污染程度。本研究包括东河附近的两个村庄（马田和竹堆），以进行健康影响评估。每个村庄总共对193名15岁或15岁以上的居民进行了慢性病现状调查。使用便捷的采样方法从78位居民中采集血液样本中的重金属浓度。农业土壤中的Pb，Cd，As，Zn和Cu含量均超过了中度至重度CPI标准。在这些金属中，Cd最高，其次是Pb，Cu最低。在靠近河流的土壤中，Pb，Cd，As和Zn的含量往往较高。慢性病的患病率超过30％，大大高于全国中部地区的报告（23.15％）。 14岁以下儿童的平均血铅水平（BLL）为7.42μg/ dL。尽管与朱堆村相比，马田村的成年人BLL显着较高（χ= 8.70，= 0.03），但两个村庄之间的慢性病患病率没有显着差异（χ= 3.23，= 0.09）。本研究中儿童的平均BLL以及BLL≥10 µg / dL的儿童比例与全国平均水平相当。成人中较高的BLL浓度和慢性病患病率可能是由于其长期暴露于重金属污染环境和重金属背景水平较高所致。这项研究的结果将为地方政府开发控制重金属污染并减少与污染有关的不良健康影响当地居民的有效方法提供基准信息。

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