Determination of linear alkylbenzenesulfonates and their degradation products in water samples by gas chromatography with ion-trap mass spectrometry

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题名:	Determination of linear alkylbenzenesulfonates and their degradation products in water samples by gas chromatography with ion-trap mass spectrometry
作者:	Ding,WH;Lo,JH;Tzing,SH
贡献者:	中央大學
关键词:	CHEMICAL IONIZATION;AROMATIC SURFACTANTS;SEWAGE-SLUDGE;PESTICIDES;EXTRACTION
日期:	1998
上传时间:	2010-06-29 19:47:28 (UTC+8)
出版者:	化學研究所
摘要:	A method was developed for the analysis of Linear alkylbenzenesulfonates (LAS) and their degradation products, sulfophenylcarboxylic acids (SPC), in samples of sewage effluent and river water. This method involved extraction of the samples by graphitized carbon black cartridge, esterification by a two-step thionyl chloride-trifluoroethanol derivatization procedure, and separation, identification and quantitation by ion-trap CC-MS with EI and low pressure CT modes. High selectivity with few signals was observed in the low pressure CI mass spectra of LAS and SPC. Enhanced sensitivity with protonated molecular ion chromatograms of homologous C-10-C-13 LAS by CT-MS permit the determination of LAS and SPC at trace concentrations in environmental samples. Recovery rates of LAS and SPC in spiked water samples ranged from 75 to 112% with R.S.D, values from 3 to 26%. The limit of quantitation for both LAS and SPC was estimated to be 0.01 mu g/l in 100 ml of water sample. (C) 1998 Elsevier Science B.V. All rights reserved.
關聯:	JOURNAL OF CHROMATOGRAPHY A
显示于类别:	[化學研究所] 期刊論文

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