- P-ISSN 1225-0163
- E-ISSN 2288-8985
국내 배경지역인 제주도 고산측정소에서 2012~2013년에 대기 미세먼지를 채취하여 분석한 결과로부터 연무와 비현상일의 조성특성을 조사하였다. 연무 시 nss-SO42−, NO3−, NH4+ 농도는 비현상일에 비해 조대입자에서 2.1~3.7배, 미세입자에서 3.1~6.5배로 미세입자에서 더 높게 증가하였고, 특히 NO3− 농도가 미세입자에서 6.5배 상승하였다. 원소성분들 중에는 S, Zn, Pb, K 등이 비현상일보다 조대입자에서 3.0~5.6배, 미세입자에서 3.2~7.7배 증가하나 Al, Fe, Ca 등은 대부분 조대입자에서 농도가 크게 증가하는 경향을 보였다. 역궤적 분석 결과 연무 시 nss-SO42−, NO3− 농도는 중국으로부터 유입되었을 때더 높은 농도를 나타내었고, 특히 기류가 중국남부를 통과했을 때 NO3− 농도가 더 크게 상승하는 경향을 보였다. 또 NO3−/nss-SO42− 농도비는 중국에서 기류가 이동했을 때 조대입자에서 상대적으로 높은 비율을 보이나 미세입자에서는 오히려 한반도를 통과했을 때 더 높은 성분비를 나타내었다.
The atmospheric aerosols of PM10 and PM2.5 were collected at Gosan site of Jeju Island during 2012-2013. Their ionic and elemental species were analyzed in order to examine the composition variation of thehaze aerosols in accordance with the pathway of air mass. The concentrations of nss-SO42−, NO3−, and NH4+increased 2.1~3.7 times in coarse particle and 3.1~6.5 times in fine particle modes, respectively, showingespecially high NO3− concentrations in fine particles during the haze days. The concentrations of S, Zn, Pband K increased 3.0~5.6 times in coarse particles and 3.2~7.7 times in fine particles during the haze days,on the other hand Al, Fe, and Ca concentrations were high only in coarse particles. Due to the back trajectoryanalysis, the concentrations of nss-SO42− and NO3− for haze days were high when the inflow pathway of airmass was from China, especially a high increase of NO3− as through the south of China. The NO3−/nss-SO42−concentration ratio was relatively high in coarse mode as air mass inflow from China, but in fine mode itwas high as air mass passing through the Korean peninsula.
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