• Journal of Korean Society for Atmospheric Environment
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• v.18 no.4
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• pp.305-316
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• 2002

Various air pollutants were measured at Tokchok Island in the Yellow Sea that is about 50 km distant from Incheon since April 1999. This study was undertaken to help understanding the level of air pollution and its distribution characteristics over the Yellow Sea. The geographical characteristics of the air pollution monitoring station and emission inventories of Tokchok Island are introduced. The mass concentrations and chemical compositions of TSP and P $M_{2.5}$ measured until March 2000 are discussed in this paper. The overall average mass concentrations are about 37.2 $\mu\textrm{g}$/㎥ for TSP and 18.7 $\mu\textrm{g}$/㎥ for P $M_{2.5}$ , respectively, which are similar to or a little lower than the values observed in other background sites at Kangwha and Taean. However, they are much lower than those observed at Qingdao in China. The low mass concentration and major anthropogenic ion concentrations in aerosols collected at Tokchok Island show that local sources are not dominant at Tokchok Island. The estimated average fractions of anthropogenic non-sea-salt sulfate to the total sulfate concentration of TSP and P $M_{2.5}$ are greater than 80% for both sizes. It hence suggests that the sulfate be mainly affected by anthropogenic sources. If we consider the average mass ratio of P $M_{2.5}$ to TSP, the mass fractions of anthropogenic species to P $M_{2.5}$ , and the molar ratio of nss S $O_4$$^{2-}$ to total N $O_{3-}$, it may be possible to infer that a part of anthropogenic species measured at Tokchok Island be transported from China. The characteristics of neutralization of nss S $O_4$$^{2-}$ and the particle size of major ions are also discussed.

• Journal of Korean Society for Atmospheric Environment
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• v.18 no.4
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• pp.317-325
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• 2002

An air pollution monitoring station has been operated at Tokchok Island since April 1999 to characterize the background atmosphere in the vicinity of the Yellow Sea. In this study, eight chemical species in PM$_{2.5}$ and three gaseous species were analyzed. A total of 53 samples were collected for the analysis of PM$_{2.5}$ and gaseous species from April, 1999 to April, 2001. The overall mean mass concentration of PM$_{2.5}$ was 20.8 $\mu\textrm{g}$/㎥ and the eight soluble ionic species accounted for about 46.8% of PM$_{2.5}$ mass. Approximately 80% of samples appeared to experience the chloride loss effect. Air pollutant sources of PM$_{2.5}$ measured at Tokchok Island were qualitatively identified by the principal component analysis. It was found that five principal components are secondary aerosol, soil, incineration, phase change of nitrate, and ocean.and ocean.

• The Korean Journal of Zoology
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• v.34 no.3
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• pp.300-306
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• 1991

덕적도 진리와 서포리의 우물에서 채집한 검물벼룩 1신종, Acanthocyclops tokchokensis, n. sp.를 기재한다.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2001.11a
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• pp.189-190
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• 2001

서쪽으로 중국대륙과 동쪽으로 한반도로 둘러싸여 있는 황해는 수심이 얕은 대륙붕 구조를 하고 있어 각종 오염에 취약하다. 황해변의 중국 동부쪽 대규모 공업단지들과 한국의 관장, 대불단지, 시화단지 등 대규모 공단에서 배출된 오염물짙이 황해를 오염시키고 있다. 한국과학기술연구원에서는 황해오염을 조사하기 위하여 황해를 대표할 수 있는 도서로 인천에서 남서쪽으로 약 49 km 떨어져 있는 덕적도에 측정소를 구축하여 1999년부터 대기오염물질을 측정하고 있다 (Lee at al., 2001). (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.61-62
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• 2000

중국의 풍하측에 위치한 우리나라는 대기오염물질의 장거리 이동에 의하여 많은 영향을 받고 있다 (문길주 등, 1999). 특히 황해는 중국과 한반도에 의해 삼면이 막혀있는 바다로서, 오염물질의 이동배출이 낮아 오염문제의 해결이 어려운 지역이다. 본 연구에서는 황해의 대기오염물질 이동 특성을 살펴보기 위하여 황해상의 도서지역인 덕적도에서 15개월간 측정한 가스상 오염물질 및 기상자료를 분석하였다. 덕적도는 중국의 영향뿐 아니라 한반도의 영향도 받을 수 있는 지점에 위치해 있으므로, 대기오염 농도와 오염물질 배출원과의 관련성에 주목하여 대기오염물질의 국지 배출과 외부로부터의 유입 특성을 구분하고자 하였다. (중략)