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장기간 관측을 통한 황사 현상이 수은의 분포에 미치는 영향 고찰
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  • 장기간 관측을 통한 황사 현상이 수은의 분포에 미치는 영향 고찰
저자명
이정순,김민영,김기현,홍성민,손장호,이수철,Lee. Jeong-Soon,Kim. Min-Young,Kim. Ki-Hyun,Hong. S.M.,Son. Z.H.,Lee. S.C.
간행물명
한국대기환경학회지
권/호정보
2007년|23권 2호|pp.169-182 (14 pages)
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한국대기환경학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

To evaluate the possibly potent role of Asian Dust (AD) on the long range transport of Hg, statistical analyses were carried out using the hourly concentration data of gaseous elemental mercury (Hg) along with relevant environmental parameters. For the purpose of this study, Hg data were collected from Yang-Jae monitoring station in Seoul, Korea during Sept. 1997 to June 2002. During the study period, Hg concentrations in non-AD period ranged from $0.03;to;32.70;ng;m^{-3}$ with a mean $5.27{pm}3.06;ng;m^{-3}$, while those in AD period from $1.79;to;32.60;ng;m^{-3}$ with a mean $5.20{pm}3.06;ng;m^{-3}$. The air quality during AD were typically deteriorated by enhanced PM10 mass concentration (by $2{sim}5$ times) compared to non-AD period, however comparison of the Hg concentration data indicates that they are not critically distinguished between events of AD and non-AD, except for the high minimum level of Hg during AD. The results of correlation and factor analysis also indicated somewhat complex patterns; in the case of AD events, Hg and $SO_{2}$ were assorted concurrently into a same factor. Evidence collected from this study thus suggests that long-range transport of Hg, if occurring, is unlikely to raise statistically Hg concentration levels such as seen during AD event. However, in nighttime of winter season, Hg concentrations are higher during AD (along with PM10 levels) than non-AD period. Although such observations suggest the effect of long range transport on the enhancement of Hg concentrations, more deliberate analysis may be required to track down the effect of such mechanism in relation with various factors including the air mass transport route.