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通过选择性和非选择性提取用UHPLC-Q轨道飞行MSMS对纸张中的per-和多基物质的可疑选

Nondumiso N Mofokeng¹, Lawrence M Madikizela², Ineke Tiggelman³

¹Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, 1 Jan Smuts Ave, Braamfontein, Johannesburg, 2000, South Africa; Mpact Innovation, Research & Development, Devon Valley Road, Stellenbosch, 7600, South Africa.

|July 21, 2024

概括

这项研究选了回收纸中的和多醇基物质 (PFAS),确定了41种独特的PFAS,包括以前未报告的化合物. 这些发现凸显了对它们对环境影响的进一步研究的需要.

科学领域:

环境化学环境化学
分析化学分析化学

背景情况:

精确的质谱仪能够进行非向分析,并对每和多醇基物质 (PFAS) 的可疑查.
PFAS在各种矩阵中普遍存在,因此需要强大的环境监测选方法.

研究的目的:

在纸张回收链中对纸质等级中的PFAS进行可疑选.
在PFAS分析中评估不同提取技术的有效性.
在回收纸材料中识别以前未报告的PFAS.

主要方法:

使用超高性能液态色谱与四极轨道飞行器高分辨率质谱相结合.
采用了两种提取技术:选择性加速溶剂提取与弱离子交换SPE和非选择性超声波辅助提取.
开发了一个系统的嫌疑人选协议,用于初步识别,具有峰值过和置信级别.

主要成果:

暂时确定了41种独特的PFAS,其中3种是两种提取方法共同的.
检测到以前未报告的PFAS,包括短链多基基和二基.
强调了选择性和非选择性提取技术在PFAS查中的互补作用.

结论:

纸张回收链中含有大量未报告的PFAS,强调需要进行全面分析.
选择性和非选择性提取方法对于彻底的PFAS选至关重要.
需要对已识别的PFAS的丰度,持久性,生物积累和毒性进行进一步的调查.

关键词:

染色体学染色体学是一种染色学.高分辨率的质谱学高分辨率质谱学回收纸回收纸回收纸回收纸回收纸回收固体相提取的固体相提取方法超声波超声波的使用方法没有目标的分析分析.

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