Han Bin, Ding Xiao, Bai Zhipeng, Kong Shaofei, Guo Guanghuan
State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China.
J Environ Monit. 2011 Sep;13(9):2597-604. doi: 10.1039/c1em10251f. Epub 2011 Aug 9.
Particle-associated polycyclic aromatic hydrocarbon (PAH) concentrations were investigated at eight sampling sites during cold periods where heating is used (heating period) (February to March, 2005) and warm periods where heating is not required (non-heating periods) (August to September 2006) in the urban area of Anshan, an iron and steel city in northeastern China. Eleven PAH species were measured using GC-MS. The total average concentrations of PAHs ranged from 46.14 to 385.60 ng m(-3) in the heating period and from 5.28 to 146.40 ng m(-3) in the non-heating period. The lowest concentration of ∑PAHs was observed at Qianshan, a monitoring site far from the city and industrial area, and the highest concentration occurred in the site located at the factory area of Anshan Iron and Steel Incorporation. Moreover, ambient PAH profiles were studied and high molecular weight PAH (including 4-6 rings) species occurred in the high fractions. Toxic equivalent factors analysis gave the potential carcinogenic risks in Anshan. For the heating sampling period, BaP equivalent concentration is in the range of 41.98 to 220.83 ng m(-3), and 9.23 to 126.00 ng m(-3) for the non-heating sampling period. By diagnostic ratio analysis, traffic emission and combustion (coal or biomass) were potential sources for PAHs in Anshan. Finally, PCA results indicated the major sources were vehicle emission, steel industry emission, and coal combustion for both heating and non-heating seasons, which agreed with the results from the diagnostic ratio analysis.
在中国东北的钢铁城市鞍山市市区，于寒冷时期（供暖期）（2005年2月至3月）和温暖时期（非供暖期）（2006年8月至9月）的八个采样点，对与颗粒物相关的多环芳烃（PAH）浓度进行了调查。使用气相色谱 - 质谱联用仪（GC - MS）测定了11种PAH物种。PAHs的总平均浓度在供暖期为46.14至385.60 ng m(-3)，在非供暖期为5.28至146.40 ng m(-3)。在远离城市和工业区的监测点千山，观察到∑PAHs的浓度最低，而最高浓度出现在鞍山钢铁公司厂区的采样点。此外，还研究了环境PAH谱，高分子量PAH（包括4 - 6环）物种占比很高。毒性当量因子分析得出了鞍山市的潜在致癌风险。对于供暖采样期，苯并[a]芘当量浓度范围为41.98至220.83 ng m(-3)，非供暖采样期为9.23至126.00 ng m(-3)。通过诊断比值分析，交通排放和燃烧（煤炭或生物质）是鞍山市PAHs的潜在来源。最后，主成分分析（PCA）结果表明，供暖和非供暖季节的主要来源都是车辆排放、钢铁行业排放和煤炭燃烧，这与诊断比值分析的结果一致。
