Assessment of pesticide residues contamination in cereals and pseudo-cereals marketed in the Canary Islands
2023
Rodríguez-Ramos, Ruth | Santana-Mayor, Álvaro | Socas-Rodríguez, Bárbara | Herrera-Herrera, Antonio V. | Rodríguez-Delgado, Miguel Ángel
In this work, the development of an analytical method for the evaluation of a wide variety of pesticide residues in cereals and pseudo-cereals widely consumed has been carried out. A QuEChERS method was used as extraction and clean-up procedure prior to separation and quantification of the target analytes by ultra-high performance liquid chromatography coupled to mass spectrometry using a single quadrupole-time-of-flight analyser. The methodology was validated for oat, rye, spelt, barley and quinoa matrices, following the European Commission guidelines (SANTE/11312/2021), achieving good absolute recovery values in the range 60–124% with relative standard deviation values lower than 20% and providing limits of quantification of the method in the low mg/kg range, in accordance with the maximum residue limits established by European policies. Finally, considering the importance of cereals in general population diet, the analysis of 60 samples was carried out in order to assure their safe consumption.
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