151. Multiclass pesticide analysis in fruit-based baby food: A comparative study of sample preparation techniques previous to gas chromatography-mass spectrometry.
- Author
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Petrarca MH, Fernandes JO, Godoy HT, and Cunha SC
- Subjects
- Humans, Infant, Newborn, Liquid Phase Microextraction methods, Solid Phase Extraction methods, Fruit chemistry, Gas Chromatography-Mass Spectrometry methods, Infant Food analysis, Pesticide Residues analysis
- Abstract
With the aim to develop a new gas chromatography-mass spectrometry method to analyze 24 pesticide residues in baby foods at the level imposed by established regulation two simple, rapid and environmental-friendly sample preparation techniques based on QuEChERS (quick, easy, cheap, effective, robust and safe) were compared - QuEChERS with dispersive liquid-liquid microextraction (DLLME) and QuEChERS with dispersive solid-phase extraction (d-SPE). Both sample preparation techniques achieved suitable performance criteria, including selectivity, linearity, acceptable recovery (70-120%) and precision (⩽20%). A higher enrichment factor was observed for DLLME and consequently better limits of detection and quantification were obtained. Nevertheless, d-SPE provided a more effective removal of matrix co-extractives from extracts than DLLME, which contributed to lower matrix effects. Twenty-two commercial fruit-based baby food samples were analyzed by the developed method, being procymidone detected in one sample at a level above the legal limit established by EU., (Copyright © 2016 Elsevier Ltd. All rights reserved.)
- Published
- 2016
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