Evaluation of heavy metal contamination and implication of multiple sources from Hunchun basin, northeastern China |
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Authors: | J-W Moon H-S Moon N-C Woo J-S Hahn J-S Won Y Song X Lin Y Zhao |
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Institution: | (1) Department of Earth System Sciences, Yonsei University, 134 Shinchon-dong, Seodaemun-ku, Seoul, 120-749, Korea e-mail: jwmoon@yonsim.yonsei.ac.kr Tel.: +82-2-3612665 Fax: +82-2-3926527, KR;(2) Institute of Applied Hydrogeology, Changchun University of Science and Technology, Changchun, China, CN |
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Abstract: | Present concentrations and distributions of heavy metals through profiles, surface soil, and stream sediment samples in the
Hunchun area, north-eastern China, were investigated to determine the elemental background values. This study also aims to
characterize potentially toxic materials such as pulverized fly ash (PFA) from power stations or ash and slag from coal used
domestically in urban areas, agrochemicals applied inappropriately, and urban sewage sludges from Hunchun City, as well as
to ascertain the possibility of natural enrichment through site characterization by mineralogical and geochemical investigation.
The distribution of contaminants in the alluvial soils (fluvisol) of this area has been influenced by several interacting
factors. The parent alluvial materials from weathered products of amphiboles have made coatings such as ferrihydrite, goethite,
and hematite. This natural inheritance factor is supported by the fact that the concentrations of weak acid-extractable (plant-available)
heavy metals are very low, except for Fe and Mn. However, in agricultural soils and adjacent stream sediments, an anthropogenic
input of Cd, Pb, Ni and Cr by agrochemicals is strongly suggested. Also, F contamination by coal combustion and the dissolution
of F-bearing minerals could cause some future problems. Wide distribution and significantly high concentrations of Cd, Fe,
Mn, and F in soils throughout the combination of pollutants originating from lithogenic and the anthropogenic sources pose
potential problems in utilizing water resources.
Received: 14 June 1999 · Accepted: 27 December 1999 |
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Keywords: | Agrochemical Heavy metal contamination Natural enrichment PFA |
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