Residence Times and Chemical Composition of Atmospheric Aerosols I. Concentration of Major Ions and Heavy Metals in Pusan

대기 에어로졸의 체류시간과 화학조성 I. 부산지역에서 주요이온과 중금속의 농도

  • Yang, Han-Sub (Division of Ocean Science, Pukyong National University) ;
  • Jeon, Eun-Ju (Division of Ocean Science, Pukyong National University) ;
  • Kim, Young-Il (Division of Ocean Science, Pukyong National University) ;
  • Ok, Gon (Earth Environmental Sciences, Pukyong National University)
  • 양한섭 (부경대 해양학과) ;
  • 전은주 (부경대 해양학과) ;
  • 김영일 (부경대 해양학과) ;
  • 옥곤 (부경대 대기과학과)
  • Published : 1999.02.01

Abstract

Chemical composition of atmospheric aerosols was measured at 4 sites in Pusan. All the samples were collected with a high volume air sampler from January to October 1996, to analyze major ions and heavy metals. Dominant ions of aerosols were S $O_4$$^{2-}$ in anion and N $a^{+}$ in cation. Sulfate, nitrate and ammonium ions in aerosols showed high enrichment factor to soil and seawater composition. The concentrations of heavy metals in aerosols was lowest at the site PI near the coast. The lowest concentrations of major ions and heavy metals mainly appeared in August, probably due to scavenging by frequent rains. Especially, the concentrations of total suspended particulate matter(TSP) and heavy metals in aerosols showed good correlations in Pusan. Based on crustal Al, enrichment factors for some metals(Zn, Cu, Pb, Cd) in aerosols were significantly greater than unity, and the order was Cd > Pb > Zn > Cu. This evidence suggests that Cd and Pb are derived predominantly from non-crustal sources.s.

Keywords

aerosols;major ions;heavy metal;total suspended particulate matter;enrichment factors

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