International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
Environ Pollut. 2011 Jul;159(7):1794-801. doi: 10.1016/j.envpol.2011.03.025. Epub 2011 Apr 16.
A comprehensive sampling campaign was carried out to study atmospheric concentration of polycyclic aromatic hydrocarbons (PAHs) in Beijing and to evaluate the effectiveness of source control strategies in reducing PAHs pollution after the 29th Olympic Games. The sub-cooled liquid vapor pressure (logP(L)(o))-based model and octanol-air partition coefficient (K(oa))-based model were applied based on each seasonal dateset. Regression analysis among log K(P), logP(L)(o) and log K(oa) exhibited high significant correlations for four seasons. Source factors were identified by principle component analysis and contributions were further estimated by multiple linear regression. Pyrogenic sources and coke oven emission were identified as major sources for both the non-heating and heating seasons. As compared with literatures, the mean PAH concentrations before and after the 29th Olympic Games were reduced by more than 60%, indicating that the source control measures were effective for reducing PAHs pollution in Beijing.
开展了一次全面的采样活动，以研究北京大气中多环芳烃（PAHs）的浓度，并评估第 29 届奥运会后控制污染源策略对降低 PAHs 污染的有效性。根据每个季节的数据，应用了过冷液体蒸气压（logP(L)(o)）模型和辛醇-空气分配系数（K(oa)）模型。四个季节的 log K(P)、logP(L)(o) 和 log K(oa) 之间的回归分析显示出高度显著的相关性。通过主成分分析确定了源因素，并通过多元线性回归进一步估计了其贡献。在非采暖季和采暖季，均发现了热成因源和焦炉排放是主要的污染源。与文献相比，第 29 届奥运会前后的平均 PAH 浓度降低了 60%以上，表明控制污染源的措施对降低北京的 PAHs 污染是有效的。
