Comparison of pressurized liquid extraction and microwave assisted extraction for the determination of organochlorine pesticides in vegetables

被引：66

作者：

Barriada-Pereira, M.

Gonzalez-Castro, M. J.

Muniategui-Lorenzo, S.

Lopez-Mahia, P.

Prada-Rodriguez, D.

Fernandez-Fernandez, E.

机构：

[1] Univ A Coruna, Dept Analyt Chem, E-15071 La Coruna, Spain

[2] Univ A Coruna, Inst Environm, E-15179 La Coruna, Spain

来源：

TALANTA | 2007年 / 71卷 / 03期

关键词：

organochlorine pesticides; vegetable samples; pressurized liquid extraction; microwave assisted extraction; solid-phase extraction;

D O I：

10.1016/j.talanta.2006.07.012

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method to determine organochlorine pesticides in horticultural samples (lettuce, tomato, spinach, potato, turnip leaf and green bean) using pressurized liquid extraction (PLE) is described and compared with microwave assisted extraction (MAE). Significant parameters affecting PLE procedure such as temperature, static extraction time and extraction solvent were optimised and discussed. Clean-up of extracts was performed by solid phase extraction (SPE) using a carbon cartridge as adsorbent. Pesticides were determined by gas chromatography and electron capture detection (GC-ECD). Analytical recoveries obtained were ca. 100% and the relative standard deviations were lower than 15% for most of the studied pesticides with the proposed methods in each analysed matrix. (c) 2006 Elsevier B.V. All rights reserved.

引用

收藏

页码：1345 / 1351

页数：7

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