Journal ArticleDOI
Single step clean-up and GC-MS quantification of organochlorine pesticide residues in spice powder.
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TLDR
In this paper, the levels of fourteen organochlorine pesticides have been determined in ready-to-use spice powders using GC-MS in SIM (selected ion monitoring) mode.Abstract:
Levels of fourteen organochlorine pesticides have been determined in ready-to-use spice powders. The pesticides were extracted withn-hexane-dichloromethane (4:1) and the extracts were cleaned in a single step on a cartridge packed with silica- and Florisil. The pesticides were quantified by GC-MS in SIM (selected ion monitoring) mode. Recoveries measured for pesticide-free spices ranged from 60% for dieldrin and endrin to 97% for other pesticides. The relative standard deviation (RSD) of the method for all the pesticides was less than 15%. The method was applied to different spices (pepper, mace, and nutmeg). Methoxychlor, lindane, and DDT and its metabolites were found in all the samples; dieldrin and endrin were not detected in any.read more
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Solid phase extraction technique-trends, opportunities and applications
A Zwir-Ferenc,Marek Biziuk +1 more
TL;DR: Solid phase extraction (SPE) is an extraction method that uses a solid phase and a liquid phase to isolate one, or one type, of analyte from a solution as mentioned in this paper.
Journal ArticleDOI
Development and validation of a LC-MS/MS method for the simultaneous determination of aflatoxins, dyes and pesticides in spices.
C. Ferrer Amate,Hermann Unterluggauer,R. J. Fischer,Amadeo R. Fernández-Alba,Sonja Masselter +4 more
TL;DR: The applicability of the method for the simultaneous determination of dyes, aflatoxins and pesticides in several types of spices was demonstrated, and the method successfully applied to a limited number of products from the local market.
Journal ArticleDOI
Microwave-assisted extraction versus Soxhlet extraction in the analysis of 21 organochlorine pesticides in plants
M. Barriada-Pereira,E. Concha-Graña,M.J. González-Castro,Soledad Muniategui-Lorenzo,Purificación López-Mahía,Darío Prada-Rodríguez,Esther Fernández-Fernández +6 more
TL;DR: A method to determine 21 organochlorine pesticides in vegetation samples using microwave-assisted extraction (MAE) is described and compared with Soxhlet extraction, showing that both methods are suitable for the determination of chlorinated pesticides in Vegetation samples.
Journal ArticleDOI
Multiresidue analysis of organochlorine and organophosphorus pesticides in muscle of chicken, pork and lamb by gas chromatography–triple quadrupole mass spectrometry
A. Garrido Frenich,J. L. Martínez Vidal,A.D. Cruz Sicilia,M. J. González Rodríguez,P. Plaza Bolaños +4 more
TL;DR: In this article, a method was optimized and validated for the simultaneous determination of residues of organochlorine (OCP) and organophosphorus (OPPs) pesticides in meat samples from chicken, pork and lamb.
Journal ArticleDOI
Comparison of pressurized liquid extraction and microwave assisted extraction for the determination of organochlorine pesticides in vegetables.
M. Barriada-Pereira,M.J. González-Castro,Soledad Muniategui-Lorenzo,Purificación López-Mahía,Darío Prada-Rodríguez,Esther Fernández-Fernández +5 more
TL;DR: A method to determine organochlorine pesticides in horticultural samples using pressurized liquid extraction (PLE) is described and compared with microwave assisted extraction (MAE), which showed low standard deviations for most of the studied pesticides.
References
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Journal ArticleDOI
Pesticide residues in black tea.
TL;DR: An investigation of residues of organochlorine and organophosphorous pesticides, as well as of a number of fungicides and of inorganic bromide in 99 samples of black tea taken on the Danish market is reported.
Journal ArticleDOI
Comparative study of clean-up and fractionation methods for the determination of organochlorine pesticides in lipids by gas chromatography.
TL;DR: Three of the methods most often used for the clean-up and fractionation of organochlorine pesticides in lipid residue analysis by gas chromatography with electron-capture detection were compared.
Journal ArticleDOI
Gel permeation and Florisil chromatographic cleanup and gas chromatographic determination of organochlorine pesticides in eggs
TL;DR: The lipids extracted from whole egg are cleaned up first by GPC with an Envirogel column and an ethyl acetate-cychlohexane (1 + 1, v/v) mobile phase and then by Florisil minicolumn chromatography with 15% diethyl ether-hexane eluant.
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