Duan Jing-Chun, Tan Ji-Hua, Sheng Guo-Ying, Fu Jia-Mo
Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Huan Jing Ke Xue. 2009 Jun 15;30(6):1574-9.
PM10 (particulates matter with aerodynamic diameter < 10 microm) samples were collected at Liwan and Wushan site in Guangzhou city between March 2002 and June 2003. Polycyclic aromatic hydrocarbons (PAHs) were studied during haze and non-haze periods in both summer and winter. PAHs pollution was serious in haze period compared with that in non-haze period, especially in winter. Compared with non-haze period, Phe, Ant, Flu, Pyr, BaA, Chr, IcdP, DahA and BghiP were more abundant in haze period in summer, and BaF, BeP, BaP, Pery, IcdP, DahA and BghiP were more abundant in haze period in winter. The BEQ values were 3.5 ng x m(-3), 3.35 ng x m(-3), 1.43 ng x m(-3) and 13.0 ng x m(-3) in non-haze in summer, in haze in summer, in non-haze in winter and in haze in winter, respectively. The BEQ values in non-haze in summer, in haze in summer and in non-haze in winter in Guangzhou (average: 2.76 ng x m(-3)) were relatively low in Chinese cities, and comparable with oversea cities. However, the BEQ value in haze in winter was relatively high in Chinese cities. It indicated that haze in winter would impair human health seriously. The diagnostic ratios suggested gasoline and diesel vehicle emission were main sources of PAHs in summer, and diesel vehicle and coal combustion emission were main sources of PAHs in winter; PAHs may come from both local sources and long-range transportation in non-haze in winter.
2002年3月至2003年6月期间，在广州市荔湾区和乌山站点采集了大气动力学直径小于10微米的颗粒物（PM10）样本。对夏季和冬季的雾霾期和非雾霾期的多环芳烃（PAHs）进行了研究。与非雾霾期相比，雾霾期的PAHs污染严重，尤其是在冬季。与非雾霾期相比，夏季雾霾期的菲、蒽、芴、芘、苯并[a]蒽、䓛、茚并[1,2,3-cd]芘、二苯并[a,h]蒽和苯并[ghi]苝含量更高，冬季雾霾期的苯并荧蒽、苯并[a]芘、苝、茚并[1,2,3-cd]芘、二苯并[a,h]蒽和苯并[ghi]苝含量更高。夏季非雾霾期、夏季雾霾期、冬季非雾霾期和冬季雾霾期的苯并[a]芘等效质量浓度（BEQ）值分别为3.5纳克/立方米、3.35纳克/立方米、1.43纳克/立方米和13.0纳克/立方米。广州夏季非雾霾期、夏季雾霾期和冬季非雾霾期的BEQ值（平均：2.76纳克/立方米）在中国城市中相对较低，与国外城市相当。然而，冬季雾霾期的BEQ值在中国城市中相对较高。这表明冬季雾霾会严重损害人体健康。诊断比值表明，夏季PAHs的主要来源是汽油和柴油车辆排放，冬季PAHs的主要来源是柴油车辆和煤炭燃烧排放；冬季非雾霾期PAHs可能来自本地源和远距离传输。
