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Risk assessments of heavy metals in house dust from a typical industrial area in Central China

机译：中国中部典型工业区房屋灰尘中重金属的风险评估

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摘要

Heavy-metal pollution in house dust is of great potential hazard to human health, as people spend more than half of their time at home. To investigate heavy-metal pollution in a heavily air-polluted area of the Xi'an western industrial area, house dust was collected from relatively large residential quarters and <63 mu m fraction of dust was measured for heavy metals. The results show that concentrations of Cr, Mn, Co, and V in the house dust are close to that in the local natural soil, whereas that of Ni, Cu, Zn, and Pb are often significantly elevated-mainly caused by intensively industrial activities in this area. Total ecological risks of these eight metals are moderate to considerable in most (69%) dust samples, while they are considerable to high in the others, occurring at the southwest of the study area. Health risk assessments reveal that exposure of these eight metals in the house dust has no risks to adults but has significant non-cancer risks to children, predominantly caused by dust ingestion. The results of this study are helpful for environmental management in industrial areas.
机译：房屋灰尘中的重金属污染对人类健康具有巨大的潜在危害，因为人们将一半以上的时间花在家里。为了调查西安西部工业区空气污染严重的地区中的重金属污染，从相对较大的住宅区收集了房屋粉尘，并测量了<63微米粉尘中的重金属。结果表明，室内灰尘中的Cr，Mn，Co和V浓度与当地自然土壤中的浓度接近，而Ni，Cu，Zn和Pb的浓度通常显着升高-主要是由于密集的工业活动引起的。在这方面。在大多数（69％）粉尘样品中，这八种金属的总生态风险中等至相当，而在其他尘埃样品中，则在研究区域的西南部，相当高。健康风险评估显示，房屋灰尘中这八种金属的暴露对成年人没有危害，但对儿童则具有重大的非癌性风险，主要是由粉尘摄入引起的。这项研究的结果有助于工业领域的环境管理。

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