Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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Vertical Distribution and Contamination of Trace Metals in Sediments Within Hoidong Reservoir

회동저수지 호저퇴적물의 미량원소 오염 및 수직적 분산특성

  • Lee, Pyeong-Koo (Department of Geological and Environmental Hazards, Korea Institute of Geoscience and Mineral Resources) ;
  • Kang, Min-Ju (Department of Geological and Environmental Hazards, Korea Institute of Geoscience and Mineral Resources) ;
  • Youm, Seung-Jun (Department of Geological and Environmental Hazards, Korea Institute of Geoscience and Mineral Resources) ;
  • Lee, Wook-Jong (Ministry of Commerce, Industry and Energy)
  • 이평구 (한국지질자원연구원 지질환경재해연구부) ;
  • 강민주 (한국지질자원연구원 지질환경재해연구부) ;
  • 염승준 (한국지질자원연구원 지질환경재해연구부) ;
  • 이욱종 (산업자원부)
  • Published : 2007.10.28
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Abstract

In order to investigate the vertical variations and speciations of trace elements, and their correlations in Hoidong reservoir, sediment cores (21-41 cm below surface) and interstitial water samples were collected from five sampling locations. The total average concentrations of trace metals in sediment core samples were $232{\pm}30.8mg/kg$ for Zn, $119{\pm}272mg/kg$ for Cu, $58.4{\pm}4.1mg/kg$ for Pb, $15.7{\pm}3.3mg/kg$ for Ni and $1.6{\pm}0.3mg/kg$ for Cd. The total concentrations of trace metals in core sediments generally decreased toward the center of the Hoidong reservoir. The total concentrations of Mn, Pb and Zn decreased with depth for all the sample locations, while Cu and Fe concentrations increased. The trace metal concentrations of interstitial water sample were in the order of Fe>Mn>Cu>Zn, but Cd, Ni and Pb were not detected. The concentrations of Zn, Cu, Fe and Mn in the interstitial water samples showed a tendency of increasing toward the bottom of the core, suggesting a possible upward diffusion. This migration of trace metals may lead to their transfer to the sediment-water interface. These trace elements would be subsequently fixed onto amorphous Fe and Mn-oxides and carbonates in the topmost layer of sediment. Based on the $K_D$ values, the relative mobilities of the studied metals were in the order of Mn>Cu>Zn>Fe. Geochemical partitioning confirmed that surface enrichment by trace metals mainly resulted from a progressive increase of the concentrations in the fractions II and III. Copper, Fe, Mn and Zn concentrations of interstitial water were closely correlated with their exchangeable fractions of sediments.

회동저수지의 호저퇴적물에 대하여 미량원소의 심도별 변화와 존재형태 및 이들의 상관관계에 대해서 알아보고자 하였다. 회동저수지의 5개 지점에서 깊이 21-41cm의 코어와 간극수를 채취하였다. 회동저수지 퇴적물 내 미량원소의 평균 총함량은 Zn $232{\pm}30.8mg/kg$, Cu $119{\pm}272mg/kg$, Pb $58.4{\pm}4.1mg/kg$, Ni $15.7{\pm}3.3mg/kg$ 및 Cd $1.6{\pm}0.3mg/kg$이었다. 회동저수지 안쪽으로 가면서 호저퇴적물 내 미량원소 함량이 감소하는 경향이 관찰되었다. 깊이에 따른 함량 변화는 시료채취 위치에 상관없이 Mn, Pb 및 Zn는 감소하는 반면, Cu와 Fe는 증가하였다. 간극수에 용해된 미량원소의 함량은 Fe>Mn>Cu>Zn의 순으로 낮았고 Cd, Ni 및 Pb는 검출되지 않았다. 간극수에 용해된 Zn, Cu, Fe 및 Mn 함량은 퇴적층의 하부로 가면서 증가하는 경향을 보여주고 있으며, 이는 상부로 미량원소가 확산되고 있음을 의미한다. 이러한 미량원소의 이동은 퇴적물-물과의 경계부분까지 전달될 것이며, 퇴적층 상부에서 비정질 철 및 망간 산화광물과 탄산염광물에 의하여 흡착되고 있다. 겉보기 분산계수 값을 이용한 결과, 각 미량원소의 상대적인 이동도는 Mn>Cu>Zn>Fe순이다. 연속추출결과, 미량원소의 표면집적이 비정질 산화광물형태와 탄산염광물 수반형태에 기인된 것임을 확인하였다. Cu, Fe, Mn 및 Zn의 간극수 내 함량은 호저퇴적물의 양이온교환형태와 밀접한 상관관계가 있음이 관찰되었다.

Keywords

References

  1. Banerjee, A.D.K., 2003, Heavy metal levels and solid phase speciation in street dusts of Delhi, India, Environmental Pollution, V. 123, p. 95-105 https://doi.org/10.1016/S0269-7491(02)00337-8
  2. Belzile, N., Lecomte, P. and Tessier, A., 1989, Testing readsorption of trace elements during partial chemical extraction of bottom sediments, Environmental Science and Technology, V. 23, p. 1015-1020 https://doi.org/10.1021/es00066a014
  3. Harrison, R.M., Laxen, D.P. and Wilson, S.J., 1981, Chemical associations of lead, cadmium, copper, and zinc in street dusts and roadside soils, Environmental Science and Technology, V. 15, p. 1378-1383 https://doi.org/10.1021/es00093a013
  4. Hewitt, C.N. and Rashed, M.B., 1990, An integrated budget for selected pollutants for a major urual highway, The Science of Total Environment, V. 93, p. 375-384 https://doi.org/10.1016/0048-9697(90)90128-H
  5. Hursthouse, A.S., 2001, The relevance of speciation in the remediation of soils and sediments contaminated by metallic elements-an overview with specific examples from central Scotland, Journal of Environmental Monitor., V. 3, p. 49-60 https://doi.org/10.1039/b006132h
  6. Kersten, M. and F?rstner, U., 1986, Chemical fractionation of heavy metals in anoxic estuarine and coastal sediment, Water Science and Technology, V. 18, p. 121-130
  7. Kheboian, C. and Bauer, C.F., 1987, Accuracy of selective extraction procedures for metal speciation in model aquatic sediments, Analytical Chemistry, V. 59, p. 1417-1423 https://doi.org/10.1021/ac00137a010
  8. Lee, P.K., Baillif, P., Touray, J.C. and Ildefonse, J.P., 1997a, Heavy metal contamination of settling particles in a retention pond along the A-71 motorway in Sologne, France, The Science of Total Environment., V. 201, p. 1-15 https://doi.org/10.1016/S0048-9697(97)84048-X
  9. Lee P.K., Baillif P. and Touray J.C., 1997b, Geochemical behaviour and relative mobility of metals (Mn, Cd, Zn and Ph) in recent sediments of a retention pond along the A-71 motorway in Sologne, France, Environmental Geology, V. 32, p. 142-152 https://doi.org/10.1007/s002540050203
  10. Lee, P.K. and Touray, J.C., 1998, Characteristics of polluted artificial soil localized on a motorway border and effects of acidification on the leaching behavior of heavy metals(Pb, Zn, Cd), Water Research, V. 32, p. 3425-3435 https://doi.org/10.1016/S0043-1354(98)00110-9
  11. Lee P.K., Youm S.J., Shin Y.S., Chi S.J., Kim J.W., Oh C.W. and Kim S.O., 2005a, Vertical Distribution of Heavy Metal Concentrations in Sediment Cores and Sedimentation Rate Using 210Pb Dating Technique in the Juam Reservoir, The Journal of Korean Society of Soil and Groundwater Environment, V. 10, p. 43-57
  12. Lee, P.K., Yu, Y.H., Yun, S.T. and Bernhard Mayer, 2005b, Metal contamination and solid phase partitioning of metals in urban roadside sediments, Chemosphere, V. 60, p. 672-689 https://doi.org/10.1016/j.chemosphere.2005.01.048
  13. Lee P.K., Kang M.J., Youm S.J., Lee I.G., Park S.W. and Lee W.J., 2006, Trace Metal Contamination and Solid Phase Partitioning of Metals in National Roadside Sediments Within the Watershed of Hoidong Reservoir in Pusan City, The journal of Korean Society of Soil and Groundwater Environment, v. 11, p. 20-34
  14. Tessier, A., Campell, P.G.C. and Bisson, M., 1979, Sequential extraction procedure for the speciation of particulate trace metals, Analytical Chemistry, V. 51, p. 844-851 https://doi.org/10.1021/ac50043a017
  15. Wang, W.H., Wong, M.H., Leharne, S. and Fisher, B., 1998, Fractionation and biotoxicity of heavy metals in urban dusts collected from Hong Kong and London, Environmental Geochemistry and Health, V. 20, p. 195-198
  16. Youm, S.J., Lee, P.K., Kang, M.J., Shin, S.C. and Yu, Y.H., 2004, Contamination Level and Behavior of Heavy Metals in Stream Sediments within the Watershed of Juam Reservoir, Economic and Environmental Geology, V. 37, p. 311-324
  17. Youm, S.J., Lee, P.K., Yeon, K.H. and Kang, M.J., 2005, Heavy Metal Contamination in Roadside Sediments within the Watershed of the Hoidong Reservoir in Busan City, Economic and Environmental Geology, V. 38, p. 247-260