title: [Seasonal distribution of water-soluble inorganic ions in the atmospheric aerosol in Qingdao].
abstract: To collect comprehensive information on the characteristics and sources of water-soluble ions in the atmospheric aerosol in Qingdao, samples of total suspended particles (TSP) were collected from January to December 2008, and the concentrations of the major water-soluble inorganic ions were analyzed using ion chromatography. The results showed that SO4(2-), NO3-, NH4+ and Cl- were the dominant water-soluble ions in TSP, the sum of the four accounting for 86.9% of water-soluble ions in mass concentration. TSP and water-soluble inorganic ions showed obvious seasonal variations and there were a variety of sources. The mass concentrations of Na+, NH4+, Ca2+, F- and Mg2+ were highest in winter and lowest in summer. The concentrations of K+ and PO4(3-) were highest in autumn and lowest in summer. NO3-, Cl- and SO4(2-) concentrations had the highest values in spring, winter, and spring, respectively. Different weather conditions had great influence on the concentrations of TSP and water-soluble ions. The mass concentrations of TSP were highest in dust weather followed by haze, smog, fog and sunny days. The average mass concentrations of Na+ , Mg2+, Ca2+, F- , Cl- and PO4(3-) were highest in smog days while the other ions in haze days.
authors.affiliation: Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China. liuzhen1@ouc.edu.cn
authors.forename: Zhen
authors.initials: Z
authors.lastname: Liu
authors.forename: Jian-Hua
authors.initials: JH
authors.lastname: Qi
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.forename: Xiao-Jing
authors.initials: XJ
authors.lastname: Chen
authors.forename: Jin-Hui
authors.initials: JH
authors.lastname: Shi
authors.forename: Hui-Wang
authors.initials: HW
authors.lastname: Gao
mesh_terms: D000336:Aerosols / Q000032:analysis*; D000393:Air Pollutants / Q000032:analysis*; D001272:Atmosphere / Q000032:analysis; D002681:China; D007477:Ions / Q000032:analysis*; D009566:Nitrates / Q000032:analysis; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis; D012621:Seasons; D013431:Sulfates / Q000032:analysis
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D007477:Ions; D009566:Nitrates; D052638:Particulate Matter; D013431:Sulfates