Hu M，He L Y，Zhang Y H，et al.Seasonal variation of ionic species in fine particle at Qingdao，China〔J〕.Atmospheric Environment,2002,36(38):5 853-5 859.
[7]
Wakamatsu S，Utsunnomiya A，Han J S，et al.Seasonal variation in atmospheric aerosols concentration covering Northern Kyushu,Japan and Seoul,Korea〔J〕.Atmospheric Environment,1996,30(13):2 343-2 354.
[8]
Willison M J，Clarke A G，Zeik E M.Seasonal variation in atmospheric aerosol concentration at urban and rural sites in Northern England〔J〕.Atmospheric Environment,1985,19(7):1 081-1 089.
[9]
Yao X H，Chan C K，Fang M，et al.The water-soluble ionic composition of PM2.5 in Shanghai and Beijing ，China〔J〕.Atmospheric Environment,2002,36(26):4 223-4 234.
[10]
Wang H B，Shooter D.Coarse-fine and day-nighe differences of water-soluble ions in atmospheric collected in Christchurch and Auckland，New Zealand〔J〕.Atmospheric Environment,2002,36(21):3 519-3 529.
