Atmospheric Polycyclic Aromatic Hydrocarbons at Lake Small Baiyangdian, Northern China

Abstract

Air samples were collected seasonally at Lake Small Baiyangdian, a shallow lake in northern China, between October 2007 and September 2008. Gas phase, particulate phase and dust fall concentrations of polycyclic aromatic hydrocarbons (PAHs) were measured using a gas chromatograph-mass spectrometer (GC-MS). The distribution and partitioning of atmospheric PAHs were studied, and the major sources were identified; the backward trajectories of air masses starting from the center of Lake Small Baiyangdian were calculated for the entire year. The following results were obtained: (1) The total concentration of 16 priority controlled PAHs (PAH16) in the gas phase was 417.2±299.8 ng·m−3, in the particulate phase was 150.9±99.2 ng·m−3, and in dust fall was 6930.2±3206.5 ng·g−1. (2) Vehicle emission, coal combustion, and biomass combustion were themajor sources in the Small Baiyangdian atmosphere and accounted for 28.9%, 45.1% and 26.0% of the total PAHs, respectively. (3) Winter was dominated by relatively greater PAHs polluted northwesterly air mass pathways. Summer showed a dominant relatively clean southern pathway, whereas the trajectories in autumn and spring might be associated with high pollution from Shanxi or Henan province.

Extracted Key Phrases

12 Figures and Tables

Cite this paper

@inproceedings{Qin2012AtmosphericPA, title={Atmospheric Polycyclic Aromatic Hydrocarbons at Lake Small Baiyangdian, Northern China}, author={Ning Qin and Xiang-Zhen Kong and Ying Zhu and Wei and Qi-Shuang He and Bin Yang and Hui-Ling Ou-Yang and Wen-Xiu and Fuliu Xu}, year={2012} }