Determination of 17 Perfluorinated Compounds in Water by Solid Phase Extraction with Liquid Chromatography-Tandem Mass Spectrometry
In this study,automatic solid phase extraction and liquid chromatography tandem mass spectrometry were used to determine 17 kinds of perfluorinated compounds in environmental water.The automatic solid phase extraction equipment can control the flow rate more accurately than the traditional manual extraction and can realize automatic spray,which can effectively solve the problem of long-chain perfluorinated compounds adhering to bottle walls and pipelines.The detection limit in this method was 0.0001-0.0003 μg/L,and the limit of quantitation was 0.0005-0.001 μg/L.The recoveries at spiking level of 0.002 μg/L were 81.2％-118.9％,and the relative standard deviation(RSD)was 2.9％-12.2％.The recoveries at spiking level of 0.01 μg/L were 75.8％-116.6％,and the RSD was 3.4％-13.7％.With the exception of perfluorohexane sulfonate(PFHxS)and perfluorodecanoic acid(PFDA),the remaining 15 perfluorinated compounds were detected in the export wastewater of 6 sewage treatment plants in Changsha City,and the highest content was perfluoropentanoic acid(PFPeA),which was detected in the range of 0.0102-0.0204 μg/L.This method has high operability and is suitable for the detection of perfluorinated compounds in environmental water.
Perfluorinated compoundsSolid phase extractionLiquid chromatography-tandem mass spectrometryWater
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