Discovery of C5-C17 Poly- and Perfluoroalkyl Substances in Water by In-Line SPE-HPLC-Orbitrap with In-Source Fragmentation Flagging
Discovery of C5-C17 Poly- and Perfluoroalkyl Substances in Water by In-Line SPE-HPLC-Orbitrap with In-Source Fragmentation Flagging
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DOI：
10.1021/acs.analchem.5b00039
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发表时间：
2015-04-21
影响因子：
7.4
通讯作者：
Martin, Jonathan W.
中科院分区：
文献类型：
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作者：
Liu, Yanna;Pereira, Alberto Dos Santos;Martin, Jonathan W.
环境样品中未知有机氟化合物的存在促使非靶向分析方法的发展，能够检测新的全氟烷基和多氟烷基物质(PFASs)。将大容量进样、高效液相色谱和超高分辨Orbitrap质谱仪相结合，建立了一种灵敏的(0.003~0.2ngF/mL的模型质量标记PFASs)非靶向工作流程，用于水中新型PFASs的发现和表征。在第一步中，将最多5毫升的水注入在线固相萃取，经高效液相色谱法层析，然后以平行循环方式进行电喷雾电离和质谱仪采集：(I)以超高分辨率(Rp=120,000，质量准确度)进行全扫描
The presence of unknown organofluorine compounds in environmental samples has prompted the development of nontargeted analytical methods capable of detecting new perfluoroalkyl and polyfluoroalkyl substances (PFASs). By combining high volume injection with high performance liquid chromatography (HPLC) and ultrahigh resolution Orbitrap mass spectrometry, a sensitive (0.003-0.2 ng F/mL for model mass-labeled PFASs) untargeted workflow was developed for discovery and characterization of novel PFASs in water. In the first step, up to 5 mL of water is injected to in-line solid phase extraction, chromatographed by HPLC, and detected by electrospray ionization with mass spectral acquisition in parallel modes cycling back and forth: (i) full scan with ultrahigh resolving power (RP = 120,000, mass accuracy