A comparison of concentrations of polycyclic aromatic compounds detected in dust samples from various regions of the world
A comparison of concentrations of polycyclic aromatic compounds detected in dust samples from various regions of the world
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DOI：
10.1016/j.envint.2008.03.008
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发表时间：
2008-10-01
影响因子：
11.8
通讯作者：
Donnelly, K. C.
中科院分区：
文献类型：
--
作者：
Naspinski, Christine;Lingenfelter, Rebecca;Donnelly, K. C.
沉降的房屋灰尘可能是人类通过非饮食摄入和皮肤接触接触有毒多环芳烃的一个来源。关于室内灰尘中各种污染物浓度的信息将有助于估计与暴露于这些化合物相关的风险。本研究报告的表面负载，多环芳烃的可变性和分布，从三个地点的家庭收集到的沉降的房子灰尘：Sumgayit，阿塞拜疆，山西省，中国，美国得克萨斯州南部。PAH地板表面负荷最高的是中国，其次是阿塞拜疆和德克萨斯州。高分子量（四环或更大）多环芳烃的中位浓度范围从得克萨斯州的0.11微克/立方米（2）到阿塞拜疆的2.9微克/立方米（2）和中国的162微克/立方米（2）。总表面负荷和相对致癌性的这些趋势表明，暴露于室内灰尘中的多环芳烃对健康影响的风险在中国人群中最高，在德克萨斯州人群中最低。正如预期的那样，来自同一地区不同房屋的灰尘样本之间的变异性很高，变异系数大于100%。烷基化多环芳烃占总质量的30-50%。通过对中国和阿塞拜疆大气中多环芳烃组分的比较，认为中国和阿塞拜疆大气中多环芳烃主要来源于燃烧源，而不是石油等未燃烧的化石燃料。这些结果，加上正在进行的调查适当的多环芳烃暴露生物标志物在人类中，将指导未来的努力，以确定如何减少暴露在研究领域。(C)2008年由Elsevier Ltd.出版
Settled house dust can be a source of human exposure to toxic polycyclic aromatic hydrocarbons (PAHs) through non-dietary ingestion and dermal contact. Information regarding the concentrations of various contaminants in house dust would be useful in estimating the risk associated with exposure to these Compounds. This study reports On the surface loading, Variability and distribution of PAHs in settled house dust collected from homes in three locations: Sumgayit, Azerbaijan; Shanxi Province, China; and southern Texas, United States. The highest PAH floor surface loadings were observed in China, followed by Azerbaijan and Texas. Median concentrations of high molecular weight (four ring and larger) PAHs ranged from a low of 0.11 mu g/m(2) in Texas, to 2.9 mu g/m(2) in Azerbaijan and 162 mu g/m(2) in China. These trends in total surface loading and relative carcinogenicity indicate that the risk of health effects from exposure to PAHs in house dust is highest in the Chinese population and lowest in the Texas population. As anticipated, variability among dust samples from different houses within the same region was high, with coefficients of variation greater than 100%. Alkylated PAHs comprised 30-50% of the total mass of PAHs. Based on a comparison of the composition of specific components, PAHs in China and Azerbaijan were determined to be derived mainly from combustion sources rather than from unburned fossil fuels such as petroleum. These results, coupled with ongoing investigation of appropriate PAH exposure biomarkers in humans, will guide future efforts to identify ways to reduce exposures in the study areas. (C) 2008 Published by Elsevier Ltd.