Journal of the Korean earth science society (한국지구과학회지)

The Korean Earth Science Society (한국지구과학회)
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Changes of Total Gaseous Mercury Concentration Levels and the Associated Environmental Conditions in Seoul, Korea

12년 차이를 두고 본 서울 한남동 지역 대기 중 수은의 분포특성과 환경요인의 비교

  • Kim, Min-Young (Seoul Metropolitan Institute of Public Health and Environment) ;
  • Kim, Ki-Hyun (Department of Geoinformation Sciences, Sejong University)
  • 김민영 (서울시 보건환경연구원 환경연구실) ;
  • 김기현 (세종대학교 지구정보과학과)
  • Published : 2001.06.30
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Abstract

The concentrations of gaseous mercury (Hg) determined between two different time periods of the late 1980s and the late 1990s were compared to account for the effects of changes between source/sink relationships of atmospheric Hg in an urban area. The Hg concentration levels were different remarkably between the two time periods due possibly to changes in source/sink relationships. The results showed that the Hg levels in the former period were measured to be 14.4${\pm}$9.56ngm$^{-3}$ (N = 2714), whereas those of the latter period were characterized by approximately three-fold decreased values of 5.34${\pm}$3.92 ngm$^{-3}$ (N=2576). Using two independent measurement data sets, we examined the patterns of Hg distribution at different time scales. When analyzed over 24 hour scale, these data sets exhibited two distinctive distribution patterns. The former period showed enhanced concentration levels during daytime, while the latter period showed relative depletion during daytime. The patterns of the two data sets were also examined over seasonal scale. The results of two different time periods consistently showed the occurrences of maximum seasonal values during winter. The former period was characterized by seasonal patterns of fuel consumption with excessive Hg levels during winter. Conversely, no distinctive trend was apparent for the latter period with slight changes in concentration levels across seasons. In order to analyze the factors affecting Hg distributions between two different periods, we conducted both correlation and factor analysis on both all data sets and on seasonally divided data groups. The results of these analyses consistently indicate that the Hg concentration levels for two different time periods are regulated by distinctive source processes that are characteristic of each period.

1980년대 말 시점과 1990년대 말 시점을 비교구간으로 설정하여 서울 한남동지역에 대한 대기중 수은의 농도분포변화양상을 비교해 보았다. 긴 시간 동안 발생원과 소멸원이 지닌 관계의 변화와 같은 영향에 의해, 양 기간대의 농도분포는 절대적 및 상대적 관점에서 모두 뚜렷한 차이를 보여 주었다. 80년대말 시점의 농도가 14.4${\pm}$9.56 ngm$^{-3}$인데 반해, 90년대 말 시점에는 이보다 1/3 가까이 감소한 5.34${\pm}$3.92ngm$^{-3}$를 유지하였다. 두 기간대에 관측된 농도 및 주변환경변수를 여러 가지 주기별로 수은의 농도분포양상을 비교해 보았다. 24시간 주기 또는 계절별로도 양기간대의 농도분포는 뚜렷한 차이를 보여 주었다. 과거 시점에는 낮 시간대에 고농도가 발생하는 현상이 빈번한데 반해, 현 시점에서는 이러한 양상을 확인하기가 어려웠다. 또한 계절적으로 겨울철에 고농도가 집중되는 현상은 과거나 현재나 유사하지만, 과거의 경우 겨울철 고농도가 여타 계절에 비해 확연했던데 반해, 최근의 분석결과는 계절간 차이가 상당 수준 줄어 들었다는 것을 보여 주었다. 이들 자료를 이용하여, 여러 가지 통계분석을 실시한 결과, 양 기간대에 현저하게 차이가 나는 농도분포는 주로 각 기간대별로 수은의 농도를 조절하는 주생성원의 성격이 현저하게 다른 데 따른 가능성이 강할 것으로 사료된다.

Keywords

References

  1. Atmospheric Environment v.32 Application of a Teflon dynamic flux chamber for quantifying soil mercury flux:Tests and results over background soil Carpi, A.;Lindberg, S.E.
  2. Atmospheric Environment v.33 International field intercomparison measurements of atmospheric mercury species at Mace Head, Ireland Ebingham, R.;Jennings, S.G.;Schroeder, W.H.;Berg, T.;Donaghy, T.;Guentzel, J.;Kenny, C.;Kock, H.H.;Kvietkus, K.;Landing, W.;Muhleck, T.;Munthe, J.;Prestbo, E.M.;Schneeberger, D.;Slemr, F.;Sommar, J.;Urba, A.;Wallschlager, D.;Xiao, Z.
  3. Journal of Environmental Science and Health v.31 Preliminary measurements of atmosphric mercury in mountainous regions of Korea Kim, K.-H.;Kim, M.-Y.
  4. Atmospheric Environment v.33 The exchange of gaseous mercury across soil-air interface in a residential area of Seoul, Korea Kim, K.-H.;Kim, M.-Y.
  5. Atmospheric Environment v.34 The effects of anthropogenic sources on temporal distribution characteristics of total gaseous mercury in Korea Kim, K.-H.;Kim, M.-Y.
  6. Atmospheric Environment v.35 no.1 Some insights into short-term variability of total gaseous mercury in urban air Kim, K.-H.;Kim, M.-Y.
  7. Atmospheric Environment(in press) The temporal distribution characterisitcs of gaseous mercury from an urban monitoring site of Seoul during 1999 to 2000 Kim, K.-H.;Kim, M.-Y.
  8. Atmospheric Environment v.29 no.2 Micrometeorological measurements of mercury vaporfluxes over background forest soils in eastern Tennessee Kim, K.-H.;Lindbergm S.E.;Meyers, T.P.
  9. Atmospheric Environment v.32 Gas-phase mecury in the atmosphere of the United Kingdom Lee, D.S.;Dollard, G.J.;Pepler, S.
  10. The Science of the Total Environment v.260 Do concepts about catchment cycling of methylmercury and mercury in boreal catchments stand the test of time? Six years of atmosphric inputs and runoff export at Svartberget, northern Sweden Lee, Y.H.;Bishop, K.H.;Munthe, J.
  11. Water v.55 Mercury in the Swedish environment-recent research on causes, consequences, and corrective methods Lindqvist, O.;Johansson, M.;Aastrup, A.et al.
  12. Global and regional mercury cycles: sources, fluxes and mass balances Emission inventories of atmospheric mercury from anthropogenic sources Pactna, J.M.;Baeyens, W.(ed.);Ebinghaus, R.(ed.);Vasiliev, O.(ed.)
  13. Atmospheric Environment v.32 Atmospheric mercury-an overview Schroeder, W.H.;Munthe, J.
  14. Nature v.355 Increase in global atmospheric concentrations of mercury inferred from measurements over the Atlantic Ocean Slemr, F.;Langer, E.
  15. The Science of the Total Environment v.259 Atmospheric mercury deposition in Guizhou, China Tan, H.;He, J.L.;Liang, L.;Lazoff, S.;Sommer, J.;Xiao, Z.F.;Lindqvist, O.