Chemical characteristics of PM2.5 fine particles collected at 1100 site of Mt. Halla during spring seasons between 1998 and 2004

1998-2004년 봄철에 한라산 1100 고지에서 채취한 PM2.5 미세먼지의 화학 특성

  • Kim, Won-Hyung (Research Institute of Basic Sciences and Department of Chemistry, Cheju National University) ;
  • Kang, Chang-Hee (Research Institute of Basic Sciences and Department of Chemistry, Cheju National University) ;
  • Hong, Sang-Bum (Research Institute of Basic Sciences and Department of Chemistry, Cheju National University) ;
  • Ko, Hee-Jung (Research Institute of Basic Sciences and Department of Chemistry, Cheju National University) ;
  • Lee, Won (Department of Chemistry, Kyung Hee University)
  • 김원형 (제주대학교 기초과학연구소.화학과) ;
  • 강창희 (제주대학교 기초과학연구소.화학과) ;
  • 홍상범 (제주대학교 기초과학연구소.화학과) ;
  • 고희정 (제주대학교 기초과학연구소.화학과) ;
  • 이원 (경희대학교 화학과)
  • Received : 2007.07.25
  • Accepted : 2007.08.31
  • Published : 2007.10.25

Abstract

The water soluble components were analyzed in the $PM_{2.5}$ fine particles collected at the 1100 site of Mt. Halla for the spring seasons between 1998 and 2004. The $PM_{2.5}$ mass concentrations were within $13.4{\pm}9.6{\sim}21.7{\pm}20.0{\mu}g/m^3$, and the concentrations of ionic components were in the order of nss-$SO{_4}^{2-}$ > $NH{_4}{^+}$ > $NO{_3}{^-}$ > $Ca^{2+}$ > $K^+$ > $Na^+$ > $Cl^-$ > $Mg^{2+}$, in which the concentration of nss-$SO{_4}^{2-}$($3.41{\pm}2.42{\mu}g/m^3$) was the highest. The concentrations of $NH{_4}{^+}$, $SO{_4}^{2-}$, and $NO{_3}{^-}$, the secondary pollutants, were respectively 0.60~1.50, 2.86~4.42, and $0.24{\sim}1.57{\mu}g/m^3$, which had occupied 88 % of the total ionic components, on the other hand, the concentrations of marine species were less than 5 %. The nss-$SO{_4}^{2-}$ showed the high correlation with $NH{_4}{^+}$, $K^+$, so that $NH{_4}{^+}$ and nss-$SO{_4}^{2-}$ might exist in the form of $(NH_4)_3H(SO_4)_2$ and $(NH_4)_2SO_4$ in fine particles. From the backward trajectory analysis, in case of high concentrations of $NH{_4}{^+}$ and nss-$SO{_4}^{2-}$ simultaneously, the air masses were originated and stagnated at the east region of China for a while, then moved into the atmosphere of Jeju. However, in case of $NO{_3}{^-}$ and nss-$Ca^{2+}$, the air masses originated at China and Siberia were moved into Jeju via the eastern China.

Acknowledgement

Supported by : 제주대학교

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