Vortex-homogenized matrix solid-phase dispersion for the extraction of short chain chlorinated paraffins from indoor dust samples

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題名:	Vortex-homogenized matrix solid-phase dispersion for the extraction of short chain chlorinated paraffins from indoor dust samples
作者:	丁望賢;Chen, Yu-Hsuan;Chang, Chia-Yu;Ding, Wang-Hsien
貢獻者:	理學院化學學系
關鍵詞:	Air Pollution, Indoor - analysis;Dust - analysis;gas chromatography;Gas Chromatography-Mass Spectrometry - methods;GC-ECNI-MS;glass;hexane;Hexanes - chemistry;Indoor dust;Limit of Detection;mass spectrometry;Methylene Chloride - chemistry;nitrogen;Paraffin - chemistry;Paraffin - isolation & purification;Short chain chlorinated paraffins;silica gel;Solid Phase Extraction;Vortex-assisted matrix solid-phase dispersion
日期:	2016-11-11
上傳時間:	2026-04-21 14:51:16 (UTC+8)
出版者:	Elsevier;Netherlands: Elsevier B.V
摘要:	摘要： •VH-MSPD combined with GC-ECNI-MS was used for the first time to analyze SCCPs.•This method effectively determined SCCPs in indoor dust samples.•The method provides good precision and detection limits at the sub-μg/g level.•VH-MSPD does not require the acquisition of dedicated instrumentation. A simple and effective method for determining short chain chlorinated paraffins (SCCPs) in indoor dust is presented. The method employed a modified vortex-homogenized matrix solid-phase dispersion (VH-MSPD) prior to its detection by gas chromatography − electron-capture negative-ion mass spectrometry (GC-ECNI-MS) operating in the selected-ion-monitoring (SIM) mode. Under the best extraction conditions, 0.1-g of dust sample was dispersed with 0.1-g of silica gel by using vortex (2min) instead of using a mortar and pestle (3min). After that step, the blend was transferred to a glass column containing 3-g acidic silica gel, 2-g basic silica gel, and 2-g of deactivated silica gel, used as clean-up co-sorbents. Then, target analytes were eluted with 5mL of n-hexane/dichloromethane (2:1, v/v) mixture. The extract was evaporated to dryness under a gentle stream of nitrogen. The residue was then re-dissolved in n-hexane (10μL), and subjected to GC-ECNI-MS analysis. The limits of quantitation (LOQs) ranged from 0.06 to 0.25μg/g for each SCCP congener. Precision was less than 7% for both intra- and inter-day analysis. Trueness was above 89%, which was calculated by mean extraction recovery. The VH-MSPD combined with GC-ECNI-MS was successfully applied to quantitatively detect SCCPs from various indoor dust samples, and the concentrations ranged from 1.2 to 31.2μg/g. 其他題名： J Chromatogr A 出版者： Netherlands: Elsevier B.V 出版日期： 2016-11-11 出處： Journal of Chromatography A, 2016-11, Vol.1472, p.129-133 版權： 2016 Elsevier B.V. 版權： Copyright © 2016 Elsevier B.V. All rights reserved. 識別號： ISSN: 0021-9673 識別號： ISSN: 1873-3778 識別號： EISSN: 1873-3778 識別號： DOI: 10.1016/j.chroma.2016.10.048 識別號： PMID: 27773386
顯示於類別:	[化學學系] 期刊論文

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