Abstract：A semi-continuous measurement (ambient ions monitor) of water soluble ions in PM2.5 in Jinan was conducted from 31 March to 19 April, 2008. SO2, NO2, O3, and meteorological parameters were also monitored. SO42-, NO3-, and NH4+ were the dominant water-soluble fractions, and their proportions were 61.1%, 13.4% and 16.7%, respectively. Compared with other cities in China, concentrations of water-soluble ions, especially SO42-, were much higher in Jinan in spring. The concentrations of sulfates exhibited a diurnal variation that was generally larger in the daytime than in the nighttime. In contrast, the diurnal variations of nitrate and ammonium were small. The concentrations of total water-soluble ions were strongly related to the meteorological parameters, such as temperature, solar radiation, mixed-layer height and wind. The back-trajectories analysis suggested that the mass concentrations of PM2.5 increased while the air masses from northeast-southwest and northeast direction. Additionally, the terrain in Jinan and local pollutants should not be neglected in these polluted events in spring.
王静, 高晓梅, 寿幼平, 杨凌霄, 王文兴. 济南春季大气PM2.5水溶性组分的半连续在线观测[J]. 中国环境科学, 2010, 30(1): 18-24.
WANG Jing, GAO Xiao-Mei, SHOU You-Ping, YANG Ling-Xiao, WANG Wen-Xing. Semi-continuous analysis on the water-soluble inorganic ions of PM2.5 in spring in Jinan City. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(1): 18-24.
