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Analysis of Micropollutants Present in Raw Water Supplied for the Several Drinking Water Treatment Plants in Seoul  

Oh, Byung-Soo (Department of Environmental Engineering, Yonsei University)
Kim, Kyoung-Suk (Department of Environmental Engineering, Yonsei University)
Ju, Seul (Department of Environmental Engineering, Yonsei University)
Kang, Joon-Wun (Department of Environmental Engineering, Yonsei University)
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Abstract
This study investigated the micropollutants present in raw water supplied for the several drinking water treatment plants in Seoul. The target sample waters were collected from the several sites, such as Jayang (JY), Kuui (KI), Paldang (PD) and Kangbuk (KB) at the Han-River stream. The analytical method used in this study enable us to detect about 300 kinds of chemicals commonly found in surface water at ppt level by GC-ion trap MS. In this study, the consideration on the analytic results focused on the four hazardous organics, such as benzenes, phenols, phthalates and pesticides. The numbers of each detected micropollutant were 1~8 kinds for benzenes, 1~7 kinds for phenols, 5~7 kinds for phthalates and 1~9 kinds for pesticides. For the pesticides, the higher concentration was detected in the water samples collected from PD and KB adjacent to the farming area, and at June and July, which is the busy farming season. The total concentrations of each micropollutants detected at all the sites were significantly lower than those of drinking water regulation in Korea as well as other advanced countries. However, the frequently detected micropollutants requires the steady and precise monitoring for the effective management of drinking water source.
Keywords
Micropollutants; Pesticides; Phthalates; Benzenes; Phenols;
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