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자료유형
학술저널
저자정보
저널정보
한국환경분석학회 환경분석과 독성보건 한국환경분석학회지 제19권 제1호
발행연도
2016.1
수록면
1 - 11 (11page)

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In this study, eight pesticides belonging to the groups of carbamates, phenoxy-acids, heterocyclics were analyzed to identify their concentrations and distribution patterns at various sampling locations (20 sites) in the Nakdong River basin during various sampling periods (May, July, September, and November 2012). Among the eight pesticides, carbofuran showed the highest mean concentration (0.0335 μg/L), followed by methomyl (0.0138 μg/L) and quinoline (0.0070 μg/L), while aldicarb and molinate were observed below the method detection limit (MDL). Quinoline was the most frequently detected pesticide with a detection frequency of 85- 100% in all the sampling periods. The concentration levels and the detection frequencies of the pesticides seemed to be related with the pesticides’ shipment/production. Among the four sampling periods, September showed the highest mean and median concentrations, although the differences were not statistically significant. The concentration levels were higher in the midstream area than the up and downstream areas of the Nakdong River, because a number of potential contamination pathways such as wastewater treatment plants, industrial facilities and agricultural fields were located in this zone. All these non-cancer-causing pesticides, except quinolone, showed no risk value (risk assessment value < 1). This study could be used as basic data for risk assessment and analysis procedures for quality assurance and quality control of pesticides in Korea.

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