On-line SPE-LC-Orbitrap 질량분석기를 활용한 잔류농약다성분 신속동시 분석방법연구
Simultaneous and Rapid Analysis of Multi-pesticide Residues usingOn-line SPE-LC-Orbitrap Mass Spectrometry
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초록
In this study, we developed a rapid and simple analytical method for the simultaneous determination of pesticide residue in environmental water using an LC-Orbitrap (Q-Exactive Plus) with electrospray ionization mode. The detection process was performed in Full scan/ddMS2 mode. Sample preparation was performed using online SPE. Only 1 mL of each water sample was injected during the on-line SPE and the samples were ﾠ concentrated in a Hypersil GOLD aQ trapping column. We compared seven gradient programs and three analytical columns to analyze the 360 pesticides. Most compounds were detected using the CORTECS C18 column with the 7th gradient program method. The established method was validated by linearities, accuracy, precisions, and limits of quantification (LOQ) of the 340 pesticides. The calibration linearities were over 0.994 and LOQ were 5.2-283.3 ng/L. Accuracy and precision values were achieved in the ranges of 91-120% and ﾠ 0.63-8.21%, respectively. This method can be applied to effectively monitor the health of aquatic environments and can be potentially applicable in a variety of fields in the future.
Abstract
In this study, we developed a rapid and simple analytical method for the simultaneous determination of pesticide residue in environmental water using an LC-Orbitrap (Q-Exactive Plus) with electrospray ionization mode. The detection process was performed in Full scan/ddMS2 mode. Sample preparation was performed using online SPE. Only 1 mL of each water sample was injected during the on-line SPE and the samples were ﾠ concentrated in a Hypersil GOLD aQ trapping column. We compared seven gradient programs and three analytical columns to analyze the 360 pesticides. Most compounds were detected using the CORTECS C18 column with the 7th gradient program method. The established method was validated by linearities, accuracy, precisions, and limits of quantification (LOQ) of the 340 pesticides. The calibration linearities were over 0.994 and LOQ were 5.2-283.3 ng/L. Accuracy and precision values were achieved in the ranges of 91-120% and ﾠ 0.63-8.21%, respectively. This method can be applied to effectively monitor the health of aquatic environments and can be potentially applicable in a variety of fields in the future.
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