International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 150090 Harbin, China.
Bull Environ Contam Toxicol. 2011 Jan;86(1):43-9. doi: 10.1007/s00128-010-0169-8. Epub 2010 Dec 9.
Polyurethane foam disk passive air samplers were deployed along an urban-rural-background transect in a northeastern Chinese region (Harbin) to investigate the spatial and seasonal variations of polycyclic aromatic hydrocarbons (PAHs). The ∑₁₆PAHs concentrations [ng/(sample·day)] were high at urban sites (315 ± 206), followed by rural sites (222 ± 160), suburban site (142 ± 114) and background site (128 ± 107). The urban fractionation effect was observed along the transect with increasing proportions for low molecular weight PAHs and decreasing proportions for high molecular weight PAHs. PAHs were found to be higher in winter and spring than in summer and autumn, most likely due to the combustion of coal and biomass for domestic heating. Sources of PAHs were investigated by principal component analysis in combination with diagnostic ratios, which both indicated that pyrogenic sources were the main sources of PAHs in the air of Harbin, China.
多环芳烃（PAHs）的时空分布特征及其来源解析
在中国东北地区（哈尔滨）的城乡-背景梯度线上，采用聚氨酯泡沫盘被动式空气采样器，调查了多环芳烃（PAHs）的空间和季节变化。∑₁₆PAHs 浓度[ng/（样品·天）]在城区最高（315±206），其次是农村（222±160）、郊区（142±114）和背景（128±107）。在整个采样线上观察到了城市分馏效应，低分子量 PAHs 的比例增加，高分子量 PAHs 的比例降低。冬季和春季的 PAHs 浓度高于夏季和秋季，这很可能是由于冬季和春季为了家庭取暖而燃烧煤炭和生物质导致的。通过主成分分析结合诊断比的方法对 PAHs 的来源进行了研究，这两种方法均表明，在中国哈尔滨的空气中，PAHs 的主要来源是人为源。
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