Determination of glyphosate, AMPA, and glufosinate in honey by online solid-phase extraction-liquid chromatography-tandem mass spectrometry

Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
Thomas S ThompsonRenata E Limanowka

Abstract

A simple method was developed for the simultaneous determination of glyphosate, its main degradation product (aminomethylphosphonic acid), and glufosinate in honey. Aqueous honey solutions were derivatised offline prior to direct analysis of the target analytes using online solid-phase extraction coupled to liquid chromatography-tandem mass spectrometry. Using the developed procedure, accuracies ranging from 95.2% to 105.3% were observed for all analytes at fortification levels of 5, 50, and 150 μg kg-1 with intra-day precisions ranging from 1.6% to 7.2%. The limit of quantitation (LOQ) was 1 μg kg-1 for each analyte. Two hundred honey samples were analysed for the three analytes with AMPA and glyphosate being most frequently detected (99.0% and 98.5% of samples tested, respectively). The concentrations of glyphosate were found to range from <1 to 49.8 μg kg-1 while those of its degradation product ranged from <1 to 50.1 μg kg-1. The ratio of glyphosate to AMPA was found to vary significantly amongst the samples where both analytes were present above the LOQ. Glufosinate was detected in 125 of 200 samples up to a maximum concentration of 33.0 μg kg-1.

References

Oct 19, 2016·Environmental Sciences Europe·Charles M Benbrook
Oct 28, 2016·Environmental Science and Pollution Research International·Thomas PoigerMarianne E Balmer
Feb 15, 2017·Environmental Science and Pollution Research International·Vahur TossAnneli Kruve
Sep 13, 2017·Chemosphere·Reet KariseMarika Mänd
Dec 30, 2017·Food Additives & Contaminants. Part B, Surveillance·Otmar ZollerChristoph Geiser

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Citations

Dec 18, 2020·Food Additives & Contaminants. Part B, Surveillance·Ana Paula Ferreira de SouzaFelix Guillermo Reyes Reyes
Jun 8, 2021·Food Additives & Contaminants. Part B, Surveillance·Natasha L HungerfordBenjamin L L Tan
Jun 8, 2021·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Martins JansonsHark Bahadur Karkee
Jul 8, 2021·Environmental Science and Pollution Research International·Yasser El-Nahhal, Ibrahim El-Nahhal
Aug 17, 2021·Comprehensive Reviews in Food Science and Food Safety·John L ViciniJohn T Swarthout

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Methods Mentioned

BETA
transgenic
enzyme-linked immunosorbent assay
ELISA

Software Mentioned

FMOC

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