Determination of organophosphate flame retardants and plasticizers in sediment samples using microwave-assisted extraction and gas chromatography with inductively coupled plasma mass spectrometry

被引:63
作者
Garcia-Lopez, M. [1 ,2 ]
Rodriguez, I. [2 ]
Cela, R. [2 ]
Kroening, K. K. [1 ]
Caruso, J. A. [1 ]
机构
[1] Univ Cincinnati, Dept Chem, Agilent Technol Metall Ctr Amer, Cincinnati, OH 45221 USA
[2] Univ Santiago de Compostela, IIAA, Fac Quim, Dept Quim Analit Nutr & Bromatol, Santiago 15782, Spain
关键词
Inductively coupled plasma mass spectrometry; Microwave extraction; Organophosphate compounds; Flame retardants; Sediment; SOLID-PHASE MICROEXTRACTION; TRIARYL PHOSPHATES; ICP-MS; ENVIRONMENTAL-SAMPLES; LIQUID-CHROMATOGRAPHY; CHEMICAL-IONIZATION; INDOOR ENVIRONMENTS; COLLISION-CELL; WATER; PESTICIDES;
D O I
10.1016/j.talanta.2009.05.006
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A procedure for the determination of 10 organophosphates, used as flame retardants and plasticizers, in sediment samples is presented. Microwave-assisted extraction (MAE) and gas chromatography with inductively coupled plasma mass spectrometry (GC-ICP-MS) were used for sample preparation and analytes determination, respectively. Influence of different variables on the performance of extraction and determination processes is thoroughly discussed. Temperature, type and amount of organic solvent showed a major effect on the yield of MAE. Regarding GC-ICP-MS detection, the combination of pulsed splitless injection with low radio frequency (rf) power, hard extraction conditions (referred to lens voltage) and addition of nitrogen (0.03 L min(-1)) to the argon plasma provided the best sensitivity. Under final working conditions, recoveries between 78% and 105%, for samples spiked at different concentration levels, and limits of quantification from 2 to 4 ng g(-1) were achieved. Analysis of unspiked sediments confirmed the excellent selectivity of the proposed method for real-life polluted sample analysis. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:824 / 829
页数:6
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