Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Investigation of Soil Contamination of Some Major Roadsides in Seoul -II. Major Roadsides in Gangdong-, Gwangjin-, Nowon-, Seodaemun- and Seongdong-gu-

서울시 주요 도로변 토양오염 조사 -II.강동구, 광진구, 노원구, 서대문구, 성동구 내 주요 도로변 토양-

  • Kim, Kwon-Rae (Dept. of Environmental Horticulture, The University of Seoul) ;
  • Lee, Hyun-Haeng (Dept. of Environmental Horticulture, The University of Seoul) ;
  • Jung, Chang-Wook (Dept. of Environmental Horticulture, The University of Seoul) ;
  • Kang, Ji-Young (Dept. of Environmental Horticulture, The University of Seoul) ;
  • Park, Soon-Nam (Dept. of Environmental Horticulture, The University of Seoul) ;
  • Kim, Kye-Hoon (Dept. of Environmental Horticulture, The University of Seoul)
  • 김권래 (서울시립대학교 환경원예학과) ;
  • 이현행 (서울시립대학교 환경원예학과) ;
  • 정창욱 (서울시립대학교 환경원예학과) ;
  • 강지영 (서울시립대학교 환경원예학과) ;
  • 박순남 (서울시립대학교 환경원예학과) ;
  • 김계훈 (서울시립대학교 환경원예학과)
  • Published : 2002.05.31
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Abstract

Present contamination levels of soils along the major roadsides of Seoul, Korea were investigated, and base-line data were accumulated for future use. Topsoil $(1{\sim}5$ cm) and subsoil $(20{\sim}50$ cm) from five districts (Gangdong-, Gwangjin-, Nowon-, Seodaemun- and Seongdong-gu) were sampled. The collected samples were airdried, passed through 2-mm sieves, and analyzed to determine the physicochemical properties including pH, EC, CEC, exchangeable cations (Ca, Mg, K, and Na), and heavy metal contents (Cd, Cu, Pb, and Zn). Soil textures of topsoils and subsoils were mainly loamy sand and sandy loam, respectively. The range of pH was $4.5{\sim}10$.0 with an average of 7.5 for both topsoil and subsoil, which is much higher than that of the forest soils in Seoul. The ranges of 0.1 N HCI extractable Cd, Cu, Pb, and Zn contents for both topsoils and subsoils were $0.0l{\sim}l.19$, N.D. (not $detected){\sim}228$.99, $N.D.{\sim}352$.54, and $2.97{\sim}332$.96 mg $kg^{-1}$, respectively. Most of the average heavy metal contents were lower than the concern level of the Soil Environment Conservation Act of Korea, but were much higher than those of the , forest soils in Seoul. Some sites were higher in heavy metal contents than the concern levels; in particular, the average Cu content in Seongdong-gu was much higher than the concern level, 50 mg $kg^{-1}$. Careful management of the soil to prevent the aggravation of the present contamination level and the dissemination of contamination is highly recommended.

서울시 주요 도로변 토양의 현재 오염정도와 앞으로 있을 오염에 대한 비교 자료를 구축할 목적으로 서울시의 25개 구 중 5개 구(강동구, 광진구, 노원구, 서대문구, 성동구)를 선정하여 토양 오염도를 조사하였다. 시료의 채취는 각 구의 주요 도로변에서 50지점을 선정하여 실시하였으며, 가로수 식수대 내의 표토(1-5rm)와 심토(20-50 cm)에서 시료를 채취하였다. 채취된 총 시료는 표토와 심토 각각 250점이었으며, 채취된 시료를 풍건시킨 후 2mm체로 쳐서 분석에 이용하였다. 분석항목은 pH를 비롯한 토양의 이화학적 특성과 중금속(Cd, Cu, Pb, Zn) 이었다. 조사 결과 토성은 사양토와 양질사토가 주를 이루었다. 토양 pH는 4.5-10.0의 범위에서 표토와 심토의 평균이 각각 7.52, 7.50으로 약알칼리성을 나타내어 서울 주변 산림지대의 pH값보다 높은 수치를 보였다. 검출된 중금속 농도의 범위는 Cd, Cu, Pb, Zn에 대하여 각각 $0.01{\sim}1.19$, N.D.(not detected)${\sim}234.45$, $N.D.{\sim}381.23$, $2.97{\sim}737.59\;mg\;kg^{-1}$이었다. 각 구에서 측정된 중금속 농도 평균의 대부분은 토양환경보전법상 우려기준을 초과하지는 않았으나 서울시 근교 도시림의 중금속 함량보다는 상당히 높은 값을 나타내었다. 그리고 일부 조사지점에서 토양환경보전법상의 우려기준을 초과하는 지점에 있었으며, 특히 성동구의 Cu 평균 함량은 토양환경보전법상의 우려기준을 초과하여 정밀조사 및 오염 확산 방지를 위한 조치가 필요할 것으로 생각된다.

Keywords

References

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