Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7682166 | Talanta | 2013 | 6 Pages |
Abstract
A method based on matrix solid-phase dispersion (MSPD) and gas chromatography-mass spectrometry to determine pesticides in fish liver and crab hepatopancreas was optimized. Ethyl acetate and acetonitrile were evaluated as elution solvents and their volumes were also checked. The best results were obtained with 1.0 g reused C18 as sorbent, using 5 mL acetonitrile as the elution solvent. Analytical recoveries ranged between 57 and 107% with RSD lower than 26% in fish liver and between 56 and 122% with RSD lower than 21% in crab hepatopancreas. The LOQ values for these compounds ranged from 0.05 to 0.5 mg kgâ1 for crab hepatopancreas and from 0.125 to 1.25 mg kgâ1 for fish liver. MPSD was shown to be easy and fast to use, with a clear advantage regarding costs because it does not need any expensive instrument. The proposed method was successfully applied to determine dimethoate, atrazine, clomazone, fenitrothion, malathion, fipronil and tebuconazole in fish liver and crab hepatopancreas samples.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Sergiane Souza Caldas, Cátia Marian Bolzan, Eliana Jaime de Menezes, Ana Laura Venquiaruti Escarrone, Camila de Martinez Gaspar Martins, Adalto Bianchini, Ednei Gilberto Primel,