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Journal of the Korean Society for Environmental Analysis 2008;11(4):247-253.
Analytical Characteristics for Perchlorate in Surface Water using IC-CD and IC-MS
IC-CD 및 IC-MS를 이용한 하천수 중 퍼클로레이트 분석특성
박재성, 정광용, 김영희, 이정섭, 강학구, 차준석
국립환경과학원
Abstract
Perchlorate is an environmental contaminant of growing concern due to its potential human health effect including respiratory stimulation, skin sensitization and thyroid malfunction. It is commonly found in wastewater from explosives- or LCD manufacturing-factories in Korea. In this research, EPA314.0 and EPA332.0 methods were applied to analyze perchlorate in surface fresh water collected from different locations. The collected samples contain high concentrations of matrix anions that would interfere with analysis via conventional Ion Chromatography (IC-CD). With field samples of various anions, the conventional IC-CD(EPA314.0) did not provide satisfactory quantifying ability; the method could not detect perchlorate at the level below 0.5 μg/ L and overestimation close to 10 μg/L compared with while EPA332.0 method using Ion Chromatography- Mass Spectrometer(IC-MS) showed good analytical ability in the range of 0.1-10 μg/L. Perchlorate of 22.3 mg/ L and 95.6 mg/L has been observed in samples from tap water source and Nak-dong River, respectively.Recently there has been considerable interest in the development of IC methods not only for measument of perchlorate in drinking water to check if it meets regulatory requirements, but also for that in surface water pollutant. For the accurate analysis of perchlorate in surface water, the EPA332.0 method using IC-MS should be considered as the official method in the future
Key Words: Perchlorate, IC-MS, River water, Surface water
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