Abstract:Size distributions of 9 water –soluble ions (SO42-、NO3-、NH4+、K+、Na+、Cl-、Ca2+、Mg2+、F-) in atmospheric particles of Shanghai were determined. SO42-、NO3- and NH4+ contributed 65%~81% of mass concentrations of the total ions. The average ratios of cations/anions (C/A) of the particles were 1.08, close to unity, indicating that particles were a bit more alkaline, which may be relative to the lack of determination of carbonate and so on. Mass concentrations of the ions focused in the particles with size of 3.0μm. Cl- appeared equal values in either of the two peaks. Na+、Mg2+ and F- showed both of bi-modals and mono-modals, and they were preferably enriched in the particles with size of >3.0μm. The size distributions of these ions depended on the meteorological conditions, formation mechanisms and sources.
耿彦红, 刘卫, 单健, 姚剑, 范雪波, 位楠楠, 李燕. 上海市大气颗粒物中水溶性离子的粒径分布特征[J]. 中国环境科学, 2010, 30(12): 1585-1589.
GENG Yan-Hong, LIU Wei, DAN Jian, YAO Jian, FAN Xue-Bo, WEI Nan-Nan, LI Yan. Characterization of major water-soluble ions in size-fractionated particulate matters in Shanghai.. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(12): 1585-1589.