Evaluation of an analytical methodology using QuEChERS and GC-SQ/MS for the investigation of the level of pesticide residues in Brazilian melons

被引：36

作者：

Sousa, Jonas da Silva ^{[1
]}

de Castro, Rubens Carius ^{[2
]}

Andrade, Gilliane de Albuquerque ^{[2
]}

Lima, Cleidiane Gomes ^{[2
]}

Lima, Lucelia Katia ^{[2
]}

Liberato Milhome, Maria Aparecida ^{[2
]}

do Nascimento, Ronaldo Ferreira ^{[3
]}

机构：

[1] Univ Fed Ceara, Dept Quim Organ & Inorgan, BR-60451970 Fortaleza, Ceara, Brazil

[2] Univ Fed Ceara, Fdn Nucl Tecnol Ind Ceara NUTEC, BR-60451970 Fortaleza, Ceara, Brazil

[3] Univ Fed Ceara, Dept Quim Anal & Fis Quim, BR-60451970 Fortalezam, CE, Brazil

来源：

FOOD CHEMISTRY | 2013年 / 141卷 / 03期

关键词：

Multiresidue; Melon; QuEChERS; GC-SQ/MS; Uncertainty; SAMPLE PREPARATION METHOD; FLIGHT MASS-SPECTROMETRY; SOLID-PHASE EXTRACTION; MULTIRESIDUE METHOD; CHROMATOGRAPHY; VEGETABLES; FRUITS; FOOD; CONTAMINATION;

D O I：

10.1016/j.foodchem.2013.05.027

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A multiresidue method based on the sample preparation by modified QuEChERS and detection by gas chromatography coupled to single quadruple mass spectrometers (GC-SQ/MS) was used for the analysis of 35 multiclass pesticides in melons (Cucumis melo inodorus) produced in Ceara-Brazil. The rates of recovery for pesticides studied were satisfactory (except for the etridiazole), ranging from 85% to 117% with a relative standard deviation (RSD) of less than 15%, at concentrations between 0.05 and 0.20 mg kg(-1). The limit of quantification (LOQ) for most compounds was below the MRLs established in Brazil. The combined relative uncertainty (Uc) and expanded uncertainty (Ue) was determined using repeatability, recovery and calibration curves data for each pesticide. Analysis of commercial melons samples revealed the presence of pesticides bifenthrin and imazalil at levels below the MRLs established by ANVISA, EU and USEPA. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：2675 / 2681

页数：7

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