Abstract
This research investigated heavy metal pollution of soils and dusts in two representative satellite cities of Seoul, Korea and studied the seasonal variations in metal concentrations through the rainy season and the chemical forms of metals using a sequential extraction analysis. The metal dispersion pattern was illustrated to match with urban structure. Soil and dust samples were collected from the cities of Uijeongbu and Koyang, which are the northern and northwestern satellite cities of Seoul (the capital), before and after rainy season. Concentrations of Cu, Pb and Zn were higher than those of the world averages for soils, and their levels decreased after rain, particularly in highly contaminated samples. Relatively high pH values were found in roadside soils, but no seasonal variation was found after the rainy season. The three metals (Cu, Pb and Zn) in soils and dusts were associated with various chemical fractions of soils and dusts as distinguished by the sequential extraction scheme, and a strong similarity of metal association between soils and dusts was found, which indicates that airborne dust may be a principle source of soil contamination. Copper is uniformly distributed, and Pb is largely associated with the reducible phase. There is an appreciable proportion of total Zn in the exchangeable/water-acid soluble fraction. After the rainy season, the most soluble fractions in soils and dusts were leached away. In terms of mobility and bioavailability of metals in soils and dusts, the order Zn >> Cu > Pb is suggested. Geographical variations of total metals corresponded well with urbanised areas of cities, especially the industrial complex and major motorways.
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Adamo, P., Dudka, S., Wilson, M.J. and McHardy, W.J. 1996. Chemical and mineralogical forms of Cu and Ni in contaminated soils from the Sudbury mining and smelting region, Canada. Environmental Pollution, 91, 11–19.
Ahn, J.S. and Chon, H.T. 1998, Identification of mineral forms of heavy metals in dusts from the satellite cities of Seoul, Korea, (in preparation).
Bowen, H.J.M. 1979. Environmental Chemistry of the Elements. Academic Press, New York.
Chon, H.T., Kim, K.W. and Kim, J.Y. 1995. Metal contamination of soils and dusts in Seoul metropolitan city, Korea. Environmental Geochemistry and Health, 17, 139–146.
Chon, H.T. 1993. Environmental Geochemistry and Health. Seoul National University Press, Seoul.
Chon, H.T. and Choi, W.J. 1992. A geochemical study on the dispersion of heavy metal elements in dusts and soils in urban and industrial environments. Journal of the Korean Institute of Mining Geology, 25, 317–336.
Culbard, E.B., Thornton, I., Watt, J., Wheatly, S., Moorcroft, S. and Thompson, M. 1988. Metal contamination in British urban dusts and soils. Journal of Environmental Quality 17(2), 226–234.
Davidson, C.M., Thomas, R.P., Mcvey, S.E., Perala, R., Littlejohn, D. and Ure, A.M. 1994. Evaluation of sequential extraction procedure for the speciation of heavy metal in sediments. Analytica Chimica Acta, 291, 277–286.
Harrison, R.H., Laxen, D.P.H. and Wilson, S.J. 1981. Chemical associations of lead, cadmium, copper, and zinc in street dust and roadside soils. Environmental Science and Technology, 15, 1378–1383.
Howard, J.C. and Shu, J. 1996. Sequential extraction analysis of heavy metals using a chelating agent (NTA) to counteract resorption. Environmental Pollution, 91, 89–90.
Kabata-Pendias, A. and Pendias H. 1984. Trace Elements in Soils and Plants. CRC Press, Boca Raton.
Kim, J.Y. and Chon, H.T. 1993. Geochemical dispersion of Cu, Pb, Zn and Cd in soils and dusts in the Seoul area. Journal of the Korean Institute of Mineral and Energy Resources, 30, 163–176.
Koyang-si. 1993. Statistical Yearbook No. 34.
Thompson, M. and Walsh, J.N. 1989. Handbook of Inductively Coupled Plasma Spectrophotometry, 2nd ed. Blackie, Glasgow.
Thornton, I., Culbard, E., Moorcrofts, S., Watt, J., Wheatly and Thompson. 1985. Metals in urban dusts and soils. Environmental Technology Letters 6, 137–144.
Thornton, I., Watt, J.M., Davis, D.J.A., Hunt, A., Cotter-Howells, J. and Johnson, D.L. 1994. Lead contamination of UK dusts and soils and implications for childhood exposure: an overview of the work of the Environmental Geochemistry Research Group, Imperial College, London, England 1981–92. Environmental Geochemistry and Health, 16, 113–122.
Thornton, I. 1989. A survey of lead in the British urban environment: an example of research in urban geochemistry. In H. Lieth, and B. Markert (eds), Element Concentration Cadasters in Ecosystems, pp. 221–233. VCH Verlagsgesellschaft.
Tiller, K.G. 1989. Heavy metals in soils and their environmental significance. Advances in Soil Science, 9, 113–142.
Uijeongbu-si. 1994. Statistical yearbook No. 32.
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Chon, HT., Ahn, JS. & Jung, M.C. Seasonal Variations and Chemical Forms of Heavy Metals in Soils and Dusts from the Satellite Cities of Seoul, Korea. Environmental Geochemistry and Health 20, 77–86 (1998). https://doi.org/10.1023/A:1006593708464
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DOI: https://doi.org/10.1023/A:1006593708464