Faster and simpler determination of chlorophenols in water by fiber introduction mass spectrometry

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• 作者：Marcos Nogueira Eberlin ; Rogé ; rio Cesar da Silva
• 关键词：Solid phase microextraction ; Fiber introduction mass spectrometry ; Chlorophenols ; Water contaminants
• 刊名：Analytica Chimica Acta
• 出版年：2008
• 期刊代码：2_00032670
• 类别：ch
• 出版时间：14 July 2008
• 卷：620
• 期：1-2
• 页码：97-102
• 文件大小：586 K

摘要

Solid phase microextraction (SPME) of chlorophenols [2-chlorophenol (2CP), 2,4-dichlorophenol (24CP), 4-chloro-3-methylphenol (43CP), 2,4,6-tri-chlorophenol (246CP) and pentachlorophenol (PCP)] followed by direct mass spectrometric analysis has been performed by fiber introduction mass spectrometry (FIMS). Two SPME fibers (65 μm PDMS/DVB and 85 μm PA fibers) were tested, and FIMS was performed via selective ion monitoring (SIM). The extractions were evaluated at 10%ionic strength and pH 1. Best extraction times were determined for both fibers. Limits of detection (LOD) and limits of quantification (LOQ) for both fibers were in the low μg L⁻¹ range. Coefficients of correlation for the analytical curves showed linear responses and mineral water and river water samples spiked with 50 μg L⁻¹ presented high recoveries. FIMS, as compared to current EPA methods, is demonstrated to allow faster and simpler (elimination of pre-separation or derivatization steps) analysis of chlorophenols in water with the required sensitivity.