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KMID : 1024520220310020103
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Journal of the Environmental Sciences
2022 Volume.31 No. 2 p.103 ~ p.116
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Heavy Metal Characteristics of Fish in Watersheds of the Upper Region of the Nakdong River
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Kwon Hee-Won
Kim Young-Hun
Kim Jeong-Jin
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Abstract
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Heavy metal contaminations were investigated in fishes inhabiting the basins of Andong, Imha and Yeongju dam basins along the upper stream of the Nakdong river. The characteristics of heavy metals contamination in fish were investigated based on sampling sites located in the Andong dam basin. The muscle tissue was analyzed for 267 objects of 26 species from the Andong dam, 50 objects of 17 species from Imha dam, 38 objects of 9 species fromYoungju dam basin.The type and amount of heavy metals concentrated in the body of the fishes was found to be species-dependent. The heavy metal species which contamination increase through the Seokpo smelter are chromium, zinc, cadmium, and lead, and these are very likely the influence of the smelter. The concentration of eight heavy metals in fish from the Andong dam basin was higher than that in fish from the Imha and Youngju dam basins; the values for zinc, arsenic, and cadmium were significantly higher. However, mercury and lead exhibited high values in the Imha and Yeongju dam basins, respectively.
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KEYWORD
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Nakdong river, Andong dam, Imha dam, Youngju dam, Fish, Heavy metal
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