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Distribution of Organic and Inorganic Arsenic Species in Groundwater and Surface Water Around the Ulsan Mine  

Kim, Youn-Tae (Department of Earth System Sciences, Yonsei University)
Woo, Nam-Chil (Department of Earth System Sciences, Yonsei University)
Yoon, Hye-On (Hazardous Substance Research Team, Korea Basic Science Institute)
Yoon, Cheol-Ho (Hazardous Substance Research Team, Korea Basic Science Institute)
Publication Information
Economic and Environmental Geology / v.39, no.6, 2006 , pp. 689-697 More about this Journal
Abstract
Distribution and speciation of arsenic in water resources was investigated in the Ulsan mine area. In 62% of uoundwater samples from the mine area, total As concentrations exceeded 0.05 mg/l, the Korean Drinking Water Standard. As(V) was the major type in groundwater with minor As(III). Arsenic species appeared to be in transition stages following redox changes after exposure to the air through the monitoring wells. In areas around the mine, the mine and Cheongog spring appeared to be the sources of arsenic contamination of water resources. The spring showed 0.345 mg/1-As, as much as seven times of the Korean standard. Groundwater and stream samples showed As-concentrations greater than 0.05 mg/l in 30% and 33% samples, respectively, and 60 and 67% of samples exceeded 0.01 mg/l of WHO guideline, respectively. Again, As(V) was a dominant species, however, several samples had As(III) in appreciable levels. In one stream sample, organic species including DMA and AsB were detected in low levels, probably resulted from transformation or related biogeochemical processes.
Keywords
arsenic speciation; arsenic species distribution; Ulsan mine; organic arsenic species;
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Times Cited By KSCI : 1  (Citation Analysis)
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