期刊
TALANTA
卷 118, 期 -, 页码 172-179出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2013.10.014
关键词
Ionic liquids; Polymeric ionic liquids; Solid-phase microextraction; Polychlorinated biphenyls; Gas chromatography; Bovine milk
资金
- Analytical and Surface Chemistry Program in the Division of Chemistry
- Separation and Purification Processes Program in the Chemical, Environmental, Bioengineering, and Transport Systems Division from the National Science Foundation [CHE-0748612]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0748612] Funding Source: National Science Foundation
Crosslinked polymeric ionic liquid (PIL)-based sorbent coatings were employed in the extraction of 21 polychlorinated biphenyls (PCBs) from ocean water and bovine milk using solid-phase microextraction (SPME). The extraction temperature, time, and concentration of sodium chloride added to the matrix were optimized in order to determine the best extraction conditions for the extraction of PCBs. The analytical performance of the crosslinked PIL-based SPME fibers was compared with a commercial 7 mu m polydimethylsiloxane (PDMS) fiber using gas chromatography (GC) employing an electron capture detector (ECD) and mass spectrometric detection (MS). Higher sensitivities for PCBs were achieved using PIL-based fibers when compared to PDMS fiber due to the incorporation of benzyl moieties into the PIL structures. The limits of detection (LOD) for all PCBs were determined to be in the low ng L-1 range using the three studied coatings. Recovery studies were performed for PCBs in ocean water and bovine milk to validate the applicability of the current SPME method. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据