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논문 기본 정보

자료유형
학술저널
저자정보
이복진 (전남대학교) 손세창 (전남대학교) 유근혜 (전남대학교) 주서령 (전남대학교) 박승식 (전남대학교) 이상일 (한국표준과학연구원)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제36권 제6호
발행연도
2020.12
수록면
727 - 741 (15page)
DOI
10.5572/KOSAE.2020.36.6.727

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초록· 키워드

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In this study, oxidative potentials (OPs) of PM<SUB>2.5</SUB> at an urban site in Gwangju and a rural site in Seosan were evaluated using the dithiothreitol (DTT) assay method. Measurements of PM<SUB>2.5</SUB> were made from October 29 to December 23, 2018 (winter) and from May 1 to June 12, 2019 (summer) in Gwangju, and from October 1 to November 4, 2019 (fall) in Seosan. Results showed that average DTT values in Gwangju were observed to be higher in summer than in winter. At the Seosan site where traffic, biomass burning (BB), and industrial emissions are mixed, average DTT values were observed to be higher than those in Gwangju. At two sites, as the PM<SUB>2.5</SUB> concentration increased, OPs also increased, suggesting that PM<SUB>2.5</SUB> played an important role in determining OP. Furthermore, the OP in Gwangju and Seosan was 2.2 and 1.4 times stronger during Asian dust period than non-Asian dust period, respectively, suggesting significant contribution of mineral dusts to the OP. Correlation analyses indicated that the OP in Gwangju was influenced by the increase in concentrations of the primary combustion emissions (e.g., traffic and BB emissions) and secondary organic aerosols (SOAs) during winter and attributed to the increases in SOA and SO₄<SUP>2-</SUP> concentrations during summer. However, the OP at the Seosan site was affected by the carbonaceous aerosols from BB and traffic emissions as well as the SOA and NO₃<SUP>-</SUP>. In summary, the difference in emission sources and secondary aerosol formation at the study sites could lead to the difference in OP.

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Abstract
1. 서론
2. 실험 방법
3. 실험 결과 및 고찰
4. 결론
References

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