Journal
FOOD CHEMISTRY
Volume 310, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2019.125813
Keywords
Glyphosate; Polar pesticides; Mass spectrometry; Rapid detection; Food safety
Funding
- project TAPASS (Tecnologie Avanzate per Produzioni Agroalimentari Sicure e Sostenibili), Regione Puglia FSC 2007-2013 Aiuti a sostegno dei Cluster Tecnologici Regionali 2014 Regione Puglia [PELM994]
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A flow injection - mass spectrometry method for rapid glyphosate detection in food commodities was developed and validated. The sample preparation protocol included a simple and rapid extract purification step through polymeric solid phase extraction cartridges followed by addition of isotopically labeled glyphosate to the final test sample. The optimized method was subjected to intra-laboratory validation (spiking range 0.5-100 mg/kg) in chickpeas, grapes and apples, as representatives of three different commodity groups as defined in SANTE/11813/2017 guidelines. Recoveries were in the range 60-111%, repeatability and within laboratory reproducibility were <= 17%.The trueness of the results generated with the developed method was evaluated by analysis of a set of incurred chickpea and wheat samples (glyphosate range 0.5-36 mg/kg) and comparison with the reference method (Quick Polar Pesticides Method), confirming the method fitness-for-purpose of rapid compliance testing.
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