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首页> 外文期刊>Environmental research >Concentrations of arsenic and lead in residential garden soil from four Johannesburg neighborhoods
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Concentrations of arsenic and lead in residential garden soil from four Johannesburg neighborhoods

机译：约翰内斯堡四个社区居民花园土壤中的砷和铅含量

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The 2017 Lancet Commission on Pollution and Health identified soil as an important, daily route of public exposure to a variety of pollutants. Lead and arsenic are two potential soil contaminants associated with serious health effects including reductions in intelligence, behavioral effects and aggressive or violent behavior (lead), as well as skin changes, cancer of the skin, bladder, liver and lungs and developmental delays (arsenic). In this study soil samples were collected, using US EPA methods, from gardens in four Johannesburg neighborhoods, and analyzed for lead and arsenic content using a portable X-ray fluorescence spectrometer. The results showed widely varied concentrations of arsenic and lead in soil collected across the four neighborhoods. Concentrations of lead (range: 0.1-2141.0 mg/kg; mean: 241.7 mg/kg (SD 282.8); median 158.1 mg/kg) exceeding local and international reference levels were found in an inner city suburb, while raised arsenic concentrations (range: 0.1-65.3 mg/kg; mean: 18.3 mg/kg (SD 11.7); median: 19.1) were found in the gardens of a suburb located very close to a mine tailings facility. This study confirms the potential for high levels of exposure to toxic metals in residential gardens in an urban African setting. There is a pressing need for scaled up attention to the public health implications of exposure to soil pollution in developing countries.
机译：2017年柳叶刀污染与健康委员会将土壤确定为每日公开暴露于多种污染物的重要途径。铅和砷是与潜在的严重健康影响相关的两种潜在土壤污染物，包括智力下降，行为影响和攻击性或暴力行为（铅），以及皮肤变化，皮肤癌，膀胱癌，肝癌和肺癌以及发育迟缓（砷） ）。在这项研究中，使用美国EPA方法从约翰内斯堡四个社区的花园中收集了土壤样品，并使用便携式X射线荧光光谱仪分析了铅和砷的含量。结果表明，在四个社区收集的土壤中砷和铅的浓度差异很大。在市区内郊区发现铅的浓度（范围：0.1-2141.0 mg / kg；平均值：241.7 mg / kg（标准差282.8）；中位数158.1 mg / kg）超过当地和国际参考水平，同时砷浓度升高（范围：0.1-65.3 mg / kg；平均值：18.3 mg / kg（SD 11.7）；中位数：19.1）在非常接近矿山尾矿设施的郊区花园中发现。这项研究证实了在非洲城市地区居民花园中高水平暴露于有毒金属的可能性。迫切需要扩大对发展中国家土壤污染暴露对公共健康影响的关注。

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