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KMID : 1171820080230040031
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Journal of Environmental and Sanitary Engineering
2008 Volume.23 No. 4 p.31 ~ p.36
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Reconnaissance Study for the Impact Evaluation of Acid Pollution at Miomotegawa River
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Yang Hyung-Jae
Park Jung-Min
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Abstract
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This study was implemented to investigate the anion and cation concentrations of Miomotegawa river since it is one of the most important salmon rivers in Japan. A great number of salmons have returned to the river, and it was expected to contain relatively lower cation concentrations since granite is widely distributed in the river catchment area. The anion and cation concentrations of station 1 except NH₄? were higher than those of other stations. The concentrations of Na?, K?, Mg²?, Ca²? ,and Cl? at station 2 were 8.61, 1.06, 1.84, 4.47, and 14.5㎎/ℓ, respectively. In the case of NH₄?, NO₃?and SO₄²?, they were 0.04,2.99 and 5.31㎎/ℓ, respectively at station 2 of down stream. However, at station 5 of upstream, they were 0.01, 1.37 and 4.08㎎/ℓ, respectively, which were relatively lower than that of downstream.
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KEYWORD
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Miomotegawa river, salmon, calcium and magnesium cation
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