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| The distribution and possible source of polycyclic aromatic hydrocarbons in dust from six air conditioner filters. |
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Abstract GC-MS technique was applied to determine 16 priority-controlled polycyclic aromatic hydrocarbons (PAHs) in dusts from air conditioner filters under six different indoor environments. 16 priority-controlled PAHs were detected in dusts from six air conditioner filters with a significant difference in concentration and with the highest PAHs concentration of 13.090μg/g in the restaurant. The average concentration of PAHs in dusts from six air conditioner filters is 4.345μg/g. There are also significant differences in the single PAH concentration with the highest concentration of BaA, followed by Chr, and the concentration of AcP is the lowest. The ring number distribution of PAHs is similar in the six air conditioner filters, dominated by 4- and 5-ring PAHs with the average percentage of 38.3% and 28.3% respectively. The ratio of mass concentration of BaA to Chr is 0.680 in the living room and 1.564 in the restaurant, from which it can be judged that the two main sources of PAHs are the smoke of tobacco combustion and cooking respectively. The TEQs of PAHs have an obvious difference, and the TEQ of BaP accounts for an average of 55.7%.
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Received: 22 January 2010
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ZHANG Li, ZHANG Yuan, QI Shi-Hua, LI Hui, XING Xin-Li, ZHANG Ze-Zhou, ZHENG Huang, SUN Yan, MIN Yang. Characteristics of atmospheric PM2.5 and the variation of PAHs in PM2.5 during spring in Hongshan district, Wuhan[J]. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(8): 2319-2325. |
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