Determination of 27 PFAS compounds in drinking water by LC-MS/MS
An ultra-high performance liquid chromatography-tandem mass spectrometry(UHPLC-MS/MS)method was developed for the simultaneous determination of 27 PFAS(perfluorinated and polyfluoroalkyl substances)in drinking water.The water samples were pretreated by solid phase extraction(SPE).The ionization mode was ESI-and the multi-reaction monitoring mode(MRM)was used for qualitative analysis.Quantitative analysis was performed by external standard method.The 27 PFAS compounds showed good linear response in the linear concentration range of 0.005-0.2 mg/L,and the correlation coefficient R2 was greater than 0.9990.The recoveries were 82.9%-108%,the relative standard deviations were 1.6-8.6%,and the limits of quantification for 27 PFAS compounds were 3.0-5.0 μg/kg.The method can be used for the detection and analysis of PFAS in drinking water with high accuracy and reliability.In order to provide technical support for the market supervision department.
Ultra-high performance liquid chromatography-tandem mass spectrometryPFASDrinking water
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