日本民居住宅灰尘中的铅和其他元素——金属暴露来源及健康风险。
Lead and other elements in house dust of Japanese residences--source of lead and health risks due to metal exposure.
机构信息
Department of Environmental Studies, University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8563, Japan.
Department of Environmental Studies, University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8563, Japan.
出版信息
Environ Pollut. 2014 Jun;189:223-8. doi: 10.1016/j.envpol.2014.03.003. Epub 2014 Mar 28.
The levels of 25 elements in house dust collected from 100 general Japanese residences were measured. Factor analysis was applied on the multi-element data to explore source of Pb (median concentration 49.1 mg/kg) in house dust. Six factors were extracted and Pb was found to have great loading on the fifth factor with Sb and Sn, suggesting solder (Sn), and plastic and metals (Sb) may be the sources of Pb in the house dust of Japanese residences. No significant loading was found on soil-related factors indicating non-significant contribution of Pb in track-in soil. Seven heavy metals (Cd, Cu, Mo, Pb, Sb, Sn, and Zn) were found in house dust at >10 times more condensed than crustal abundance. Health risk of these elements to children via the ingestion of house dust was estimated based on the comparison with tolerable daily intake and found to be non-significant for most of the elements.
从 100 个日本普通家庭收集的室内灰尘中测量了 25 种元素的水平。对多元素数据进行因子分析，以探讨室内灰尘中 Pb（中位数浓度 49.1mg/kg）的来源。提取了六个因子，发现 Pb 在第五个因子上有很大的负载，与 Sb 和 Sn 一起，表明焊料（Sn）和塑料和金属（Sb）可能是日本住宅室内灰尘中 Pb 的来源。没有发现与土壤相关的因子有显著的负载，表明带入土壤中的 Pb 没有显著的贡献。在室内灰尘中发现了七种重金属（Cd、Cu、Mo、Pb、Sb、Sn 和 Zn），其浓度比地壳丰度浓缩了 10 多倍。根据与可耐受日摄入量的比较，估算了这些元素通过摄入室内灰尘对儿童的健康风险，发现大多数元素的风险不显著。
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