Validation of a screening method for analysis of 49 pesticides in foods of plant origins
2008
Milovanović, I.Lj., Institute for Food Technology, Novi Sad (Serbia) | Mišan, A.Č., Institute for Food Technology, Novi Sad (Serbia) | Beljkaš, B.M., Institute for Food Technology, Novi Sad (Serbia)
Since pesticides are potentially harmful to the environment and consequently to human beings through the consumption of pesticide contaminated food and water, food commodities have to be controlled to assure the non-violation of the maximum residue levels (MRLs) set by domestic and European regulations. In this work, a multiresidue GC-MS method for screening of 49 common pesticide residues in various foods of plant origin, which uses the QuEChERS method for sample extraction and cleanup, has been validated. Recovery values, linearity and reporting limits (RL) in various food commodities were determined for the analyzed compounds, and instrument performance was assessed by the use of mixture of internal standards. Eight pesticides did not show satisfactory recovery values or colud not be detected in levels required by the regulations, and were therefore excluded from the final scope of validation.
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