Estimation of measurement uncertainty associated to the determination of pesticide residues: a case study

Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
Patrizia StefanelliRoberto Dommarco

Abstract

In the analytical analysis the measurement uncertainty is a quantitative indicator of the confidence describing the range around a reported or experimental result within which the true value can be expected. Several approaches can be used to estimate the measurement uncertainty associated to the analysis of pesticide residues: a) the top-down, the estimation can be referred to default values; b) the bottom-up the estimation is related to the uncertainty sources. Concerning the bottom-up approach, the following contributions have been investigated: weight of sample, calibration solutions, final volume of sample and intermediate repeatability studies. The commodity/residue combination selected in this study was celery/tau-fluvalinate pesticide. Tau-fluvalinate is a broad-spectrum insecticide in the pyrethroid class of pesticides. The Maximum Residue Limit (MRL) of tau-fluvalinate in celery has been set at 0.01 mg/kg. The tau- Fluvalinate showed two chromatographic peaks. Since the individual standards are not available, the two peaks were integrated separately and the instrumental responses were added. The total residue was calculated on the basis of resulted peaks. The present work aims to compare the uncertainty estimated by ex...Continue Reading

References

Mar 23, 2004·Journal of Chromatography. a·Eugenia SobolevaOusman Jarju
Jan 30, 2007·Journal of Agricultural and Food Chemistry·Richard J FussellPeter Josef Brodesser
Feb 14, 2008·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Meekin ChaiAsha Lal
May 2, 2009·Journal of Chromatography. a·Antonia Garrido FrenichR Romero-González

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Citations

Feb 7, 2014·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·A SantilioD Attard Barbini
Apr 16, 2013·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Patrizia StefanelliRoberto Dommarco
May 28, 2020·Journal of the Science of Food and Agriculture·Yanli BianYangyang Guo
Mar 26, 2013·Environmental Science & Technology·Peter Fantke, Ronnie Juraske

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