Abstract：In order to investigate the characteristics of atmospheric mercury pollution, total gaseous mercury (TGM) and particulate mercury (PHg) samples were collected in Qingdao during January 14-17, 2013, when a serious haze event occurred. The results showed that the average concentrations of TGM and PHg in Qingdao during this haze event were (2.8±0.9) ng/m3 and (245±174) pg/m3, respectively. On haze days (January 14 and 15), there was a negative correlation between TGM and PHg, and TGM/PHg ratios were higher than that on non-haze days (January 16 and 17), indicating that meteorological conditions would promote the transformation of TGM to PHg. Correlation analysis between mercury concentrations and environmental factors showed that both TGM and PHg were positively correlated with temperature and relative humidity, and negatively correlated with wind speed. TGM was positively correlated with SO2 and NO2, suggesting fossil fuel combustion was its major source. The pathways of air masses associated with the mercury samples were classified into 5 categories based cluster analysis. Atmospheric mercury in Qingdao during this event was mainly influenced by short-range transport, the influence of local pollution from Shandong area contributed to the highest TGM and PHg contents on haze days.
张玉卿, 刘汝海, 崔雪晴, 周建平, 王艳. 青岛霾天气下大气汞的污染特征分析[J]. 中国环境科学, 2014, 34(8): 1905-1911.
ZHANG Yu-Qing, LIU Ru-Hai, CUI Xue-Qing, ZHOU Jian-Ping, WANG Yan. The characteristic analysis of atmospheric mercury during haze days in Qingdao. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(8): 1905-1911.
