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Journal of the Korean Society for Environmental Analysis 2018;21(2):78-86.
Simultaneous Determination of Seven Cyanobacterial Toxins in River Water by Liquid Chromatography-Tandem Mass Spectrometry
액체크로마토그래피-텐덤질량분석법에 의한 하천수 중 남조류 독소 7종의 동시분석
이인정, 김진아, 안정민, 양득석
국립환경과학원
Abstract
Water blooms, formed by cyanobacteria such as Microcystis, Aphanizomenon, and Anabaena have been occurring frequently in lakes and rivers in Korea. As such, there is a need to develop a sensitive method to determine cyanobacterial toxins to minimize potential hazards in raw water resources. In this study, we developed a highly sensitive analytical method for seven cyanobacterial toxins (microcystin-LR, -RR, -YR, -LA, anatoxin-a, nodularin, and cylindrospermopsin) using liquid chromatography-tandem mass spectrometry (LCMS/MS) with direct injection. The method was evaluated in terms of calibration curve linearity, limit of detection, limit of quantitation, accuracy, and precision. The limit of detection and limit of quantitation were in the range of 0.010-0.026 µg/L and 0.030-0.081 µg/L, respectively. Good accuracy and precision was also obtained. The optimized method was used to measure the concentrations of the seven cyanobacterial toxins in river water from Nakdong River, and microcystin-RR, -YR, and -LR were detected.
Key Words: Cyanobacterial toxins, LC-MS/MS, Direct injection, Nakdong River


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