Due to the complexity of the sample and the range of pesticides that are commonly used, it is very possible that an unknown or unexpected compound can co-elute with a target compound and interfere with the quantitative determination of that target. Peak deconvolution is a powerful tool to assist the analyst in determining the signal from the target compound in cases where co-elution of an interferent is observed. Once the signal from the target compound is isolated, reliable quantitative measurements can be readily obtained.
Analysis of Pesticides in Food - Identification and Quantitation of Oxychlordane in the
The trace analysis of pesticides in foods is commonly performed by gas chromatography with mass spectrometric detection. Typically, a general analytical method that can monitor a broad range of the potential pesticides in the sample is used, and the method is designed to provide a definitive measurement of the concentration of the various potential pesticides based on the intensity of a major fragment ion in the spectrum. This approach assumes that the presence and intensity of the fragment ion is due solely to the compound of interest.