Organophosphate levels in apple composites and individual apples from a treated Canadian orchard

Journal of Agricultural and Food Chemistry
D F K RawnAndré Bélanger

Abstract

Azinphos-methyl, phosalone, and phosmet were applied individually to separate rows of trees within a commercial apple orchard in Quebec, Canada, during the 2003 agricultural season. Apples were collected for residue analysis immediately prior to the harvesting of the remaining apples for market distribution and were prepared for analysis as both individual apples and as composites of eight individuals. Analysis of the three applied compounds, as well as five organophosphate insecticides that were not applied, was performed using gas chromatography-mass spectrometry. Azinphos-methyl, phosalone, and phosmet, which were applied, were detected in all samples analyzed at concentrations ranging from 0.004 ng/g to 2260 ng/g. Methidathion was not observed in any sample. Chlorpyrifos, diazinon, dimethoate, and malathion concentrations ranged from below method detection limits to 0.71 ng/g, and the detection frequency for these compounds ranged from 20% to 100%. Residues measured in this study were all below the Canadian maximum residue limit for apples. Variability factors ranged from 2 to 19 for all compounds observed in this study. Composite samples may not accurately reflect the extremes of exposure from consumption of single serving...Continue Reading

References

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Citations

Apr 10, 2013·Asian Pacific Journal of Tropical Biomedicine·Mansoreh ShayeghiHojjatollah Zeraati
Mar 17, 2007·Food Additives and Contaminants·Dorothea F K RawnAndré Bélanger
Sep 12, 2012·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·A M Riederer, C Lu
Sep 1, 2007·Pakistan Journal of Biological Sciences : PJBS·Mansoreh ShayeghiHassan Vatandoost
Jan 16, 2008·Archives of Environmental Contamination and Toxicology·Rosaria SciarrilloLorenzo Varano
Jun 6, 2007·Archives of Environmental Contamination and Toxicology·Maria De FalcoVincenza Laforgia
Nov 20, 2014·Environmental Monitoring and Assessment·Quanying WangQiang Liu
Feb 8, 2021·Journal of the Science of Food and Agriculture·Mohammad Dalower Hossain ProdhanDebasish Sarker
Apr 24, 2018·Food Chemistry·Fouad K AlsammarraieMeizhen Huang

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