Journal ArticleDOI
Single step clean-up and GC-MS quantification of organochlorine pesticide residues in spice powder.
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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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Journal ArticleDOI
Organochlorine and organophosphorus pesticide residues in food from Egyptian local markets.
TL;DR: The aging of HCH andDDT indicated a recent use of both pesticides during the potato storage period between cultivation seasons, however, such use is illegal because HCH mixture isomers (gammaxane) and DDT have been officially prohibited from agricultural use in Egypt since 1980.
Journal ArticleDOI
Extraction and clean-up methods for the determination of organochlorine pesticide residues in medicinal plants
TL;DR: In this paper, the application of various extraction solvents with an Ultra-Turrax system and ultrasonication with a probe and solid-phase extraction (SPE) with octadecyl (C 18 )-bonded silica and Florisil cartridges to linden samples for the gas chromatography-electron capture detection (GC-ECD) of α-hexachlorocyclohexane (α-HCH), β -HCH, γ-hCH, hexachlorobenzene (HCB), heptachlor and
Journal ArticleDOI
Single-step separation of organochlorine pesticide residues from fatty materials by combined use of solid-matrix partition and C18 cartridges
Alfonso Di Muccio,Tiziana Generali,Danilo Attard Barbini,Patrizia Pelosi,Antonella Ausili,Fabio Vergori,Silvana Girolimetti +6 more
TL;DR: In this paper, a two-cartridge system composed of Extrelut-3 with a C18 cartridge connected downstream has been developed for the separation of organochlorine (OC) pesticide residues from oils and fats.
Journal ArticleDOI
Solid-phase extraction cleanup of halogenated organic pesticides
TL;DR: In this article, a total of 44 pesticides were analysed by GC with electron capture detection, and the performance of cleanup with either C 18 or Floisil SPE were compared.
Journal ArticleDOI
Multicolumn solid-phase extraction cleanup of organophosphorus and organochlorine pesticide residues in vegetable oils and butterfat.
TL;DR: Diatomaceous earth columns used with reversed and normal solid phase extraction (SPE) cartridges were evaluated for the quantitative determination of a number of organophosphorus (OP) and organochlorine (OC) pesticide residues in edible vegetable oils and butterfat.
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