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Commercial yerba mate (Ilex paraguariensis) produced in South America: Determination of dithiocarbamate residues by gas chromatography-mass spectrometry by Rosselei Caiel da Silva; Ingrid Duarte dos Santos; Júlia Paula Neu; Robson Dias Wouters; Marlos Eduardo Zorzella Fontana; Priscila Dotto Rosa Balbinot; Roger Wagner; Ionara Regina Pizzutti is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Commercial yerba mate (Ilex paraguariensis) produced in South America: Determination of dithiocarbamate residues by gas chromatography-mass spectrometry about?

This work presents an easy and quick miniaturized procedure for the analysis of dithiocarbamates fungicides (DTC), by GC-MS, in yerba mate, an important product in South America. The sample amount, the volume of extracting solvent and acid solution, and the time of hot bath shaking were minimized. A clean-up procedure based on PSA, GCB and MgSO4 was studied in order to improve analytical signal and reduce GC-MS system damage. Blank yerba mate samples were spiked with thiram at equivalent CS 2 concentrations of 0.1, 0.3, 0.5 and 1 mg kg -1 . The validated method at least 2 times faster than the traditional method and was according to the latest European guidelines for pesticide residue analysis. Linearity, limits of detection and quantification, matrix effects, trueness and precision were assessed. Sixty-five commercialized samples from southern Brazil and Argentina were analyzed; 14% of samples presented CS 2 concentration greater than LOQ (0.1 mg kg -1 ).

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Author

Rosselei Caiel da Silva; Ingrid Duarte dos Santos; Júlia Paula Neu; Robson Dias Wouters; Marlos Eduardo Zorzella Fontana; Priscila Dotto Rosa Balbinot; Roger Wagner; Ionara Regina Pizzutti

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)