Simultaneous Detection of 28 Pesticide Residues in Drinking Water Using Online Solid-phase Extraction-Liquid Chromatography- Triple Quadrupole Mass Spectrometry
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Simultaneous Detection of 28 Pesticide Residues in Drinking Water Using Online Solid-phase Extraction-Liquid Chromatography- Triple Quadrupole Mass Spectrometry
Journal of Instrumental AnalysisVol. 45, Issue 10, Pages: 2144-2151(2026)
LIN Ding,YANG Tian-fu,ZHU Li-hong,WANG Xue-cheng,LI Jing,ZHOU Xiao-hua.Simultaneous Detection of 28 Pesticide Residues in Drinking Water Using Online Solid-phase Extraction-Liquid Chromatography- Triple Quadrupole Mass Spectrometry[J].Journal of Instrumental Analysis,2026,45(10):2144-2151.
LIN Ding,YANG Tian-fu,ZHU Li-hong,WANG Xue-cheng,LI Jing,ZHOU Xiao-hua.Simultaneous Detection of 28 Pesticide Residues in Drinking Water Using Online Solid-phase Extraction-Liquid Chromatography- Triple Quadrupole Mass Spectrometry[J].Journal of Instrumental Analysis,2026,45(10):2144-2151.DOI: 10.12452/j.fxcsxb.26050904.
Simultaneous Detection of 28 Pesticide Residues in Drinking Water Using Online Solid-phase Extraction-Liquid Chromatography- Triple Quadrupole Mass Spectrometry
Online solid-phase extraction-liquid chromatography-triple quadrupole mass spectrometry was established to simultaneously determine 28 pesticide residues in drinking water. Three solid-phase extraction cartridges,namely,hydrophilic-lipophilic balance(HLB),C
18
,and weak anion exchange(WAX),were compared based on adsorption mechanisms,and HLB was identified as the best extraction cartridge. Extraction parameters were optimized via single-factor experiments,and the optimal conditions were determined as follows:water sample pH:5.0,sample loading volume:10 mL,sample load
ing flow rate:2 mL/min,and elution with 90% acetonitrile-2 mmol/L ammonium acetate-0.1% formic acid solution at a flow rate of 0.2 mL/min. The methodological validation results showed that the 28 target compounds exhibited good linearity within the range of 0.025-10 μg/L(
r
≥0.997 9),with the limits of detection and quantification being 0.003-0.010 μg/L and 0.012-0.040 μg/L,respectively. Recoveries at three spiked levels ranged from 80.3% to 114%,with relative standard deviations of 1.4%-14%. The method was applied to analyze 20 drinking water samples. Acephate,bentazone,2,4-D,acetochlor,and chlorantraniliprole were detected at relatively high concentrations,whereas the other target analytes were observed at low concentrations. This sensitive and accurate method is suitable for the simultaneous analysis of 28 pesticide residues in drinking water.
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