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A method for the quantitative analysis of polar anionic pesticides in milk/infant formula, cereals and fruit and vegetables using ion chromatography coupled to tandem mass spectrometry. | LitMetric

AI Article Synopsis

  • - The text discusses the challenges analytical chemists face when working with polar pesticides, highlighting various existing methods of analysis and their limitations, particularly in relation to legal requirements.
  • - It introduces a new ion chromatography method with tandem mass spectrometry that effectively analyzes a broad range of pesticides and their metabolites, including glyphosate, glufosinate, and chlorate, meeting legislative standards.
  • - The method has been validated according to SANTE guidelines and applied to over 300 food samples to ensure reliable monitoring in various food matrices like milk, infant formula, cereals, and fruits and vegetables.

Article Abstract

Polar pesticides such as anionic or ionisable compounds have always provided a challenge for analytical chemists. Methods of analysis have been developed using a range of techniques including normal phase chromatography, ion-pairing, derivatisation and HILIC or multi-mode chromatography. These work well with some of these compounds but, except for HILIC, all of them have their limitations and none of them cover the range required by legislation. Some of these compounds, glyphosate, chlorate and phosphonic acid, are found regularly in a range of food matrices, and therefore reliable methods of analysis are essential. This study describes an ion chromatography method with tandem mass spectrometry detection which not only covers the full range of compounds required by legislation but also can be expanded to include other anionic or ionisable pesticides and metabolites. These include glyphosate and its metabolites, glufosinate and its metabolites, ethephon and its metabolites as well as fosetyl aluminium, chlorate and perchlorate. The method is fully validated according to the performance criteria from the SANTE guidelines for the analysis of pesticides in food and feed over a wide range of matrices, including milk, infant formula, cereals and fruits and vegetables. Over 300 food samples have analysed as part of our routine monitoring program.

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Source
http://dx.doi.org/10.1039/d4ay00183dDOI Listing

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