全氟和多氟烷基物质检测与筛查技术研究进展

A Review of Research Progress on Detection and Screening Techniques for Perfluoroalkyl and Polyfluoroalkyl Substances

  • 摘要: 全氟和多氟烷基物质(PFAS)是具有广泛工业和商业应用的人造化学品,在地表水、地下水、土壤和沉积物中普遍存在。PFAS因其毒性和生物累积性而受到全球关注,其精准识别和定量对于污染防治意义重大。本文综述了环境中PFAS的前处理环节、检测技术及筛查方法的最新研究进展,重点介绍了PFAS溶剂萃取、固相萃取方法的优缺点及适用条件,并对高效富集前处理技术作了适当论述。色谱-质谱联用是PFAS分析主流检测技术,尤其是高效色谱-质谱联用和超高效液相色谱-质谱联用是未来PFAS量化检测的发展方向,检出限已低至0.01ng/L。总结了国内外已发布的量化检测标准及其关键指标特征,探讨了靶向与非靶向筛查的优缺点及适用场景,指出高分辨率质谱法(HRMS)和PFAS总量分析是未来非靶向筛查的重要发展方向,建议通过开发总有机氟快速筛查工具,以及研发适用于不同样品基质的前处理技术,为今后多元环境中PFAS的准确识别和快速量化提供参考。

     

    Abstract: Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals with widespread industrial and commercial applications, ubiquitous in surface water, groundwater, soil, and sediments. PFAS have garnered significant global attention due to their toxicity and bioaccumulative properties, making their precise identification and quantification crucial for pollution prevention and control efforts. This review provides an overview of the latest research advancements in pretreatment steps, detection techniques, and screening methods for PFAS in the environment. It emphasizes the strengths, weaknesses, and applicable conditions of solvent extraction and solid-phase extraction methods for PFAS, and delves into high-efficiency enrichment pretreatment techniques. Chromatography-mass spectrometry, particularly high performance liquid chromatography-mass spectrometry (HPLC-MS) and ultra-high performance liquid chromatography-mass spectrometry (UPLC-MS), represent the mainstream detection technology for PFAS analysis, with future developments pointing towards even lower detection limits, now reaching as low as 0.01ng/L. The review summarizes the published quantitative detection standards and their key characteristics from both domestic and international contexts, discusses the merits, demerits, and applicable scenarios of targeted and non-targeted screening, and highlights high-resolution mass spectrometry (HRMS) and total PFAS analysis as pivotal directions for future non-targeted screening. It recommends the development of rapid screening tools for total organic fluorine and pretreatment techniques tailored to different sample matrices, offering insights for accurate identification and rapid quantification of PFAS in diverse environmental settings. The BRIEF REPORT is available for this paper at http://www.ykcs.ac.cn/en/article/doi/10.15898/j.ykcs.202408120172.

     

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