Determination of linear alkylbenzenesulfonates in sediments using pressurized liquid extraction and ion-pair derivatization gas chromatography-mass spectrometry

被引：32

作者：

Ding, WH ^{[1
]}

Fann, JCH ^{[1
]}

机构：

[1] Natl Cent Univ, Dept Chem, Chungli 32054, Taiwan

来源：

ANALYTICA CHIMICA ACTA | 2000年 / 408卷 / 1-2期

关键词：

pressurized liquid extraction; linear alkylbenzenesulfonates; ion-pair derivatization; gas chromatography-mass spectrometry;

D O I：

10.1016/S0003-2670(99)00870-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A time and solvent saving method, called pressurized Liquid extraction (PLE), was developed to extract linear alkylbenzene-sulfonate (LAS) residues from sediment samples. The analytes can be completely extracted by methanol at 100 degrees C and 100 atm with combined 15 min static and 20 min dynamic extraction steps. The LAS residues were then identified and quantitated by gas chromatography-mass spectrometry (GC-MS) with ion-pair derivatization in the gas chromatography (GC) injection-port using a large volume (10-20 mu l) direct sample introduction (DSI) device. LAS recovery from spiked kaolin samples was 115% with 4% RSD. For lake sediment samples, LAS recovery was 110% with 2% RSD. The PLE method was also tested with recently spiked and aged samples showing its perfect applicability for LAS extraction. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

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页码：291 / 297

页数：7

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