Optimisation of a solid-phase microextraction procedure for the determination of triazines in water with gas chromatography-mass spectrometry detection

被引：53

作者：

Frías, S ^{[1
]}

Rodríguez, MA ^{[1
]}

Conde, JE ^{[1
]}

Pérez-Trujillo, JP ^{[1
]}

机构：

[1] Univ La Laguna, Dept Analyt Chem Nutr & Food Sci, Santa Cruz, CA USA

来源：

JOURNAL OF CHROMATOGRAPHY A | 2003年 / 1007卷 / 1-2期

关键词：

water analysis; environmental analysis; solid-phase microextraction; pesticides; triazines;

D O I：

10.1016/S0021-9673(03)00957-9

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A procedure based on solid-phase microextraction (SPME) and gas chromatography-mass spectrometry, operating in the chemical ionisation mode, was developed and optimised in order to determine 10 triazines in water samples. Five different SPME fibers available for analysis [polydimethylsiloxane (PDMS) 100 mum, polyacrylate (PA) 80 mum, PDMS-divinylbenzene (DVB) 65 mum, Carbowax (CW)-DVB 65 mum, and Carboxen (CAR)-PDMS 75 mum] were tested, and PDMS-DVB was selected. To enhance the sensitivity of the SPME, variables affecting adsorption and desorption steps such as temperature. time, pH and ionic strength of the solution were optimised. Detection limits obtained were ranged between 2 and 17 ng 1(-1), and precision values were below 8% for the selected PDMS-DVB fiber. The optimised method was applied to real water samples and no triazines were detected. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：127 / 135

页数：9

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