Implementação de método analítico para determinação de resíduos de organofosforados em leite por cromatografia a gás com detector fotométrico de chama

This paper regards the implementation of the QuEChERS method for the analysis by GC-FPD of 53 different pesticides from the organophosphate class, in whole UHT and pasteurized milk. Selectivity, linearity, repeatability, recovery and limits of detection and quantification were evaluated. Of all pest...

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Bibliographic Details
Published in:Química Nova 2012-01, Vol.35 (8), p.1657-1663
Main Authors: Lucia Helena Pinto Bastos, Adherlene Vieira Gouvêa, Fabíola Málaga, Maria Helena Wohlers Morelli Cardoso, Silvana do Couto Jacob, Armi Wanderley da Nóbrega
Format: Article
Language:English
Subjects:
milk
pesticides
QuEChERS
Online Access:Get full text
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Summary:This paper regards the implementation of the QuEChERS method for the analysis by GC-FPD of 53 different pesticides from the organophosphate class, in whole UHT and pasteurized milk. Selectivity, linearity, repeatability, recovery and limits of detection and quantification were evaluated. Of all pesticide recoveries, 51 were considered satisfactory since the values ranged from 70 to 120% with RSD < 20%. The quantification limits ranged from 0.005 to 0.4 mg kg-1. The QuEChERS method was suitable for determination of 52 pesticides, presenting several advantages - quick, cheap, easy, effective, rugged and safe - with regard to other traditional methodologies.
ISSN:1678-7064
DOI:10.1590/S0100-40422012000800027