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Risk Assessment for Aquatic Organisms of Pesticides Detected In Water Phase of Six Major Rivers in Korea  

Lee, Ji-Ho (Department of Agro-Food Safety, National Academy of Agricultural Sciences (NAAS), Rural Development Administration)
Park, Byung-Jun (Department of Agro-Food Safety, National Academy of Agricultural Sciences (NAAS), Rural Development Administration)
Kim, Jin-Kyung (Agro-Material Management Division, Research Policy Bureau, Rural Development Administration)
Kim, Won-Il (Department of Agro-Food Safety, National Academy of Agricultural Sciences (NAAS), Rural Development Administration)
Hong, Su-Myung (Department of Agro-Food Safety, National Academy of Agricultural Sciences (NAAS), Rural Development Administration)
Im, Geon-Jae (Department of Agro-Food Safety, National Academy of Agricultural Sciences (NAAS), Rural Development Administration)
Hong, Moo-Ki (Department of Agro-Food Safety, National Academy of Agricultural Sciences (NAAS), Rural Development Administration)
Publication Information
The Korean Journal of Pesticide Science / v.15, no.1, 2011 , pp. 48-54 More about this Journal
Abstract
Risk assessments of pesticides detected in six major rivers during peak season were estimated for algae, Daphnia, and fish using hazard quotient (HQ) indexes. The eight pesticides (isoprothiolane, hexaconazole, diazinon, chlorpyrifos, prothiofos, alachlor, butachlor, molinate) were detected within the range of 0.027~12.871 ${\mu}g/L$. Detection frequency of isoprothiolate was estimated to be high at 67.5%, and those of the others varied from 15.0 to 37.5%, Hazard Quotients (HQ) indexes varied by freshwater organisms (algae, Daphnia, and fish). Overall, the ecological risk probability due to exposure of pesticides detected in major rivers did not reveal based on HQ indexes below 1.0. Particularly, butachlor and molinate for algae, chlorpyrifos, diazinon, prothiofos for Daphnia, and chlorpyrifos for fish acted as dominant contributors in increasing the ecological risk in six major rivers. This implied that integrated ecological risk assessment is required using various biological species, reflecting toxicity sensitivity. This study may provide the essential data in establishing the priority for pesticides management in major rivers, Korea.
Keywords
Aquatic organism; Major rivers; Pesticides; Risk Assessment;
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Times Cited By KSCI : 4  (Citation Analysis)
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