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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

COMPARISON OF METHODS BY LIQUID CHROMATOGRAPHY FOR THE DETERMINATION OF PESTICIDE MULTIRESIDUES IN STRAWBERRIES

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Author(s):
Daniele Oshita ; Isabel C. S. F. Jardim
Total Authors: 2
Document type: Journal article
Source: Química Nova; v. 38, n. 10, p. 1273-1281, Dez. 2015.
Abstract

Liquid chromatography is often used for the determination of pesticide multiresidues in foods. In Brazil, the strawberry crop is an example of a food with high levels of irregularities because of the application of pesticides. This is a major concern from the perspective of food safety, environmental protection, and certification for food export. The purpose of this study is to evaluate and compare chromatographic separation and detection methods in relation to a newly developed and validated method using ultra high performance liquid chromatography (LC) coupled with tandem mass spectrometry (MS/MS) for the analytical determination of pesticides in strawberries. The comparisons were based on evaluations of the analysis time, consumption of the solvent in the mobile phase, injection volume, detectability, matrix effect, and recovery. The results showed that the LC–MS/MS and UHPLC–MS/MS techniques were both extremely efficient at analyzing pesticide residues with different physico-chemical parameters that were present at low concentrations in a complex matrix. The UHPLC separation method provided better chromatographic performance and productivity, which contributed favorably to routine analytical determinations. Detection by MS/MS had better detectability and selectivity compared with the diode array detector. (AU)

FAPESP's process: 06/57897-9 - Preparation, characterization and application of new stationary phases for high-performance liquid chromatography and electrochromatography
Grantee:Carol Hollingworth Collins
Support type: Research Projects - Thematic Grants