Abstract:Main components and contribution to atmospheric extinction coefficient were studied using particulate sample data in spring at Tianjin. The pollution of aerosol was heavy, the water-soluble inorganic ion and carbonaceous were main components, accounted for about 24.8% and 10.0% of the total PM10, 26.6% and 13.9% of the total PM2.5, respectively. SO42-, NO3- and Ca2+ were main inorganic ions. The meteorological conditions were good for the transformation of sulfate and nitrate during haze days. The SOC mass concentration were estimated with the Minimum ratio method of OC/EC, the ratio of SOC and OC in PM10 and PM2.5 was 38% and 24%. The second icons (SO42-, NO3- and NH4+), coarse mass, OC and EC were main factors influencing the atmospheric extinction coefficient. The average contributions were 33.1%, 22.6%, 22.0% and 15.6%. The atmospheric extinction and visibility could be fitted well with components and relative humidity.
姚青, 韩素芹, 毕晓辉. 天津2009年3月气溶胶化学组成及其消光特性研究[J]. 中国环境科学, 2012, 32(2): 214-220.
YAO Qing, HAN Su-Qin, BI Xiao-Hui. Main components and extinction characteristic of aerosol during March 2009 at Tianjin. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(2): 214-220.