Microwave-assisted extraction of Irgarol 1051 and its main degradation product from marine sediments using water as the extractant followed by gas chromatography-mass spectrometry determination

被引:20
作者
Gatidou, G
Zhou, JL
Thomaidis, NS [1 ]
机构
[1] Univ Athens, Analyt Chem Lab, Dept Chem, GR-15771 Athens, Greece
[2] Univ Sussex, Dept Biol & Environm Sci, Sch Life Sci, Brighton BN1 9QJ, E Sussex, England
[3] Univ Aegean, Lab Water & Air Qual, Dept Environm Studies, Mitilini 81100, Greece
关键词
microwave-assisted extraction; marine sediment; Irgarol; 1051;
D O I
10.1016/j.chroma.2004.06.071
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A microwave-assisted extraction (MAE) method for the determination of Irgarol 1051 (2-methylthio-4-tert-butylamino-6-cyclopropylamino-s-triazine) and its main degradation product M1 (2-methylthio-4-tert-butylamino-s-triazine) in marine sediments by gas chromatography-mass spectrometry (GC-MS) was developed. The key parameters of MAE procedure, including the amount of the sediment, the volume of the extraction solvent, the duration and the temperature of the extraction procedure were optimized. The extraction procedure was followed by solid-phase extraction (SPE) on reverse phase C-18 cartridges. The isolation of the target compounds from the matrix was found to be efficient when 3 g of marine sediment were extracted with 30 ml of water for 10 min at 115 degreesC. Final determination was accomplished by GC-MS. Quantification was performed with matrix-matched calibration using atrazine-d(5) as internal standard. Mean recoveries higher than 85.4% were obtained for both compounds at three fortification levels with relative standard deviations (R.S.D.) less than or equal to 14%. The limits of detection (LOD) of the developed method were 0.9 and 1.7 ng g(-1) dry weight for M1 and Irgarol 1051, respectively. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:41 / 48
页数:8
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