A method for simultaneously detecting the content of 28 perfluorinated and polyfluoroalkyl substances in soil

By combining liquid chromatography-tandem mass spectrometry and solid-phase extraction column, the problem of simultaneous detection of multiple perfluorinated and polyfluoroalkyl substances in soil was solved, achieving efficient and accurate detection results.

CN122306992APending Publication Date: 2026-06-30HANGZHOU INST FOR ADVANCED STUDY UCAS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HANGZHOU INST FOR ADVANCED STUDY UCAS
Filing Date
2026-04-23
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing technologies are difficult to simultaneously and efficiently detect multiple perfluorinated and polyfluoroalkyl substances in soil, especially in complex matrices where extraction efficiency is low, making it impossible to achieve simultaneous and accurate detection of multiple target pollutants.

Method used

Soil samples were pretreated using liquid chromatography-tandem mass spectrometry combined with a weak anion exchange solid-phase extraction column to prepare test solutions. The simultaneous detection of 28 perfluorinated and polyfluoroalkyl substances was achieved through analysis using a standard working curve.

Benefits of technology

It improves the extraction efficiency of perfluorinated and polyfluoroalkyl substances in complex matrices, and enables simultaneous and accurate detection of 28 target pollutants, covering short-chain, long-chain, novel alternatives and chlorinated PFASs.

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Abstract

This application discloses a method for simultaneously detecting the content of 28 perfluorinated and polyfluoroalkyl substances in soil, relating to the field of organic matter detection technology. Its main purpose is to address the problem of poor PFAS extraction efficiency in complex matrices, which prevents the simultaneous and accurate detection of multiple target pollutants. The method includes: pretreatment of the soil sample to obtain a test solution; detection of the test solution using liquid chromatography-tandem mass spectrometry to obtain a sample chromatogram; and content analysis of the sample chromatogram based on a standard working curve for 28 perfluorinated and polyfluoroalkyl substances to obtain the substance content results. The standard working curve is plotted based on a mixed standard solution containing 28 perfluorinated and polyfluoroalkyl substances and an isotope internal standard solution.
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