Analysis of linear alkylbenzenesulfonates in water samples by large-volume injection-port derivatization and gas chromatography-mass spectrometry

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28354

Title:	Analysis of linear alkylbenzenesulfonates in water samples by large-volume injection-port derivatization and gas chromatography-mass spectrometry
Authors:	Ding,WH;Chen,CT
Contributors:	中央大學
Keywords:	SOLID-PHASE EXTRACTION;LIQUID-CHROMATOGRAPHY;AROMATIC SURFACTANTS;DEGRADATION PRODUCTS;POLYETHOXYLATES;NONYLPHENOL;SULFONATES
Date:	1999
Issue Date:	2010-06-29 19:46:53 (UTC+8)
Publisher:	化學研究所
Abstract:	This work presents a modified method to analyze linear alkylbenzenesulfonates (LASs) in water samples. The method involves extraction of samples by a graphitized carbon black (GCB) cartridge, and direct derivatization in the GC injection port using a large-volume (10-20 mu l) direct sample introduction (DSI) device with tetraalkylammonium (TAA) salts. The analytes were then identified and quantitated by ion-trap GC-MS. The large-volume DSI injection-port derivatization technique provides sensitivity, fast and reproducible results for LAS residues, to quantitation at 0.1 mu g/l in 200 mi of water samples. The retention effect of TAA salts in the injection port was not detected. Enhanced selected mass chromatograms of [M-55](+) ions of butylated C-10-C-13 LASs by electron impact ionization MS allows one to determine LAS residues at trace levels in environmental samples. Recovery of total LASs in spiked variety water samples ranged from 89 to 112% while RSDs ranged from 2 to 13%. (C) 1999 Elsevier Science B.V. All rights reserved.
Relation:	JOURNAL OF CHROMATOGRAPHY A
Appears in Collections:	[Graduate Institute of Chemistry] journal & Dissertation

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