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논문 기본 정보

자료유형
학술저널
저자정보
Jung-Min Song (Jeju National University) Jun-Oh Bu (Jeju National University) Hee-Jung Ko (National Institute of Meteorological Sciences) Won-Hyung Kim (Jeju National University) Chang-Hee Kang (Jeju National University)
저널정보
한국분석과학회 분석과학 분석과학 제30권 제4호
발행연도
2017.8
수록면
182 - 193 (12page)

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초록· 키워드

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In order to examine the variation characteristics of chemical compositions in relation to the inflow pathways of Asian dust, PM<SUB>10</SUB> and PM<SUB>2.5</SUB> aerosols were collected at Gosan site of Jeju Island during the Asian dust days between 2010 and 2015, and their chemical compositions were analyzed. The mean mass concentrations of PM<SUB>10</SUB> and PM<SUB>2.5</SUB> during Asian dust days were 130.0 ± 90.2 and 38.2 ± 24.7 μg/㎥, respectively. The composition ratios of major secondary pollutants (nss-SO₄<SUP>2−</SUP>, NH₄<SUP>+</SUP>, NO₃<SUP>−</SUP>) were high as 53.7 % for PM<SUB>10-2.5</SUB> and 90.6 % for PM<SUB>2.5</SUB>. When the Asian dusts had been transported to the Korean Peninsula via Loess Plateau of central China, the concentrations of nss-Ca<SUP>2+</SUP>, NH₄<SUP>+</SUP>, nss-SO₄<SUP>2−</SUP>, and NO₃<SUP>−</SUP> increased more noticeably. Whereas in case when the inflow pathways of Asian dust had been through the Bohai bay, the concentrations of the crustal species such as Al, Fe, and Ca were relatively high in coarse particles. The atmospheric aerosols were acidified largely by sulfuric and nitric acids. They were neutralized mainly by calcium carbonate in coarse particle mode passed through Manchuria area, but by ammonia in fine particle mode passed through Loess plateau and Bohai bay. Ammonium salts are assumed to exist as ammonium sulfate and ammonium nitrate in coarse particles, but mostly as ammonium sulfate in fine particles.

목차

Abstract
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References

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UCI(KEPA) : I410-ECN-0101-2018-433-001191826