Concentrations and sources of polycyclic aromatic hydrocarbons in indoor dust in China.
Concentrations and sources of polycyclic aromatic hydrocarbons in indoor dust in China.
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DOI：
10.1016/j.scitotenv.2014.01.119
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发表时间：
2014-09
期刊：
影响因子：
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通讯作者：
Hong Qi;Wen-Long Li;Ning-zheng Zhu;Wanli Ma;Li-Yan Liu;Feng Zhang;Yi-Fan Li
中科院分区：
文献类型：
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作者：
Hong Qi;Wen-Long Li;Ning-zheng Zhu;Wanli Ma;Li-Yan Liu;Feng Zhang;Yi-Fan Li
2010年冬天，我们从中国各地的45个私人住宅和36个公共建筑中采集了室内灰尘样本。通过 GC-MS 测定 16 种多环芳烃 (PAH)。 PAH 的总浓度范围为 1.00 μg/g 至 470 μg/g，平均值为 30.9 μg/g。高分子量（HMW）PAH（4至6环）是室内灰尘中发现的主要PAH，占私人住宅中PAH总浓度的68%，占公共建筑中PAH总浓度的84.6%。交通条件和烹饪方法是控制PAH水平的两个关键因素，尤其是煤炭燃烧和车辆交通排放源。室内灰尘中的 PAH 浓度与位置（纬度和经度）之间存在显着的正相关性。纬度分布表明，中国北方取暖的煤炭使用量高于南方。纵向分布表明，石油和矿物燃料的使用量以及经济发展和人口密度从西部地区向东部地区逐渐增加。此外，利用诊断比和主成分分析 (PCA) 来探索源解析，如中国室内灰尘中 PAH 的热成源和石成源所示。此外，采用BaP当量评估PAHs的致癌风险，也表明交通排放和燃煤燃烧是我国室内灰尘中PAHs致癌风险的两大贡献因素。
Indoor dust samples were collected across China in the winter of 2010 from 45 private domiciles and 36 public buildings. 16 polycyclic aromatic hydrocarbons (PAHs) were determined by GC–MS. Total concentrations of PAHs ranged from 1.00 μg/g to 470 μg/g with a mean value of 30.9 μg/g. High-molecular weight (HMW) PAHs (4 to 6 rings) are the predominant PAHs found in indoor dust, accounting for 68% of the total PAH concentration in private domiciles, and 84.6% in public buildings. Traffic conditions and cooking methods were the two key factors controlling PAH levels, especially for coal combustion and vehicular traffic emission sources. A significant positive correlation was observed between PAH concentrations in indoor dust and based on location (latitude and longitude). The latitudinal distribution indicated a higher usage of coal for heating in Northern China than in Southern China. The longitudinal distribution indicated that the usage of oil and mineral fuels as well as economic development and population density increased from West China to East China. In addition, diagnostic ratios and principal component analysis (PCA) were used to explore source apportion, as indicated in both the pyrogenic and petrogenic sources of PAHs in indoor dust in China. Furthermore, the BaP equivalent was applied to assess the carcinogenic risk of PAHs, which also indicated that traffic emissions and coal combustion were the two major contributions to carcinogenic risk of PAHs in indoor dust in China.