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논문 기본 정보

자료유형
학술저널
저자정보
이복진 (전남대학교) 박승식 (전남대학교)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제35권 제3호
발행연도
2019.6
수록면
357 - 369 (13page)
DOI
10.5572/KOSAE.2019.35.3.357

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초록· 키워드

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In this study, a GRIMM dust monitor (hereafter, OPC) and TSI optical particle sizer (OPS), which utilize light scattering technique for real-time monitoring of particle number and concentration, were evaluated based on the gravimetric and beta-ray absorption methods during the period from March 12 to April 09, 2018 at an urban site. For this purpose, 24-hr integrated PM<SUB>2.5</SUB> samples were collected and analyzed for ionic species. Hourly average PM<SUB>10</SUB> and PM<SUB>2.5</SUB> concentrations from OPS were 2.7 and 1.7 times higher than those from GRIMM OPC, respectively, and also 1.9 and 1.7 times higher than those from betaray absorption method (BAM). However, highest PM<SUB>2.5</SUB>/PM<SUB>10</SUB> value was found in GRIMM OPC. The PM<SUB>2.5</SUB>/PM<SUB>10</SUB> was 0.85±0.09, 0.50±0.20, and 0.53±0.17 for OPC, OPS, and BAM, respectively, indicating rather underestimation of PM10 from GRIMM OPC. 24-hr average PM<SUB>2.5</SUB> from OPC and OPS was approximately 3% (an intercept of +9.3 μg/㎥) lower and 63% (an intercept of +3.3 μg/㎥) higher than that from the gravimetric method, respectively, with R2 values of 0.93 and 0.82. However, 24-hr average PM<SUB>2.5</SUB> from BAM was strongly correlated with the gravimetric method with a slope of 0.96, an intercept of 3.4 μg/㎥, and an R<SUP>2</SUP> of 0.97, suggesting high reliability of BAM. Also the difference in 24-hr PM<SUB>2.5</SUB> between gravimetric method and OPS increased negatively with increasing the concentrations of secondary inorganic components (=NO₃<SUP>-</SUP>+NH₄<SUP>+</SUP>+SO₄<SUP>2-</SUP>), NO₃<SUP>-</SUP>, NH₄<SUP>+</SUP>, and SO₄<SUP>2-</SUP> However, secondary ionic species concentrations were very poorly correlated (R<SUP>2</SUP>=~0.00) with the difference in 24-hr PM<SUB>2.5</SUB> between the gravimetric method and GRIMM OPC, suggesting GRIMM dust monitor provides a reliable and real-time measurements of PM<SUB>2.5</SUB>. Finally, results from this study indicates that PM<SUB>10</SUB> and PM<SUB>2.5</SUB> from TSI OPS and PM<SUB>10</SUB> from GRIMM OPC should be corrected to obtain their real concentrations based on the gravimetric method and/or BAM.

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

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