Liquid Chromatography-tandem Mass Spectrometry Enhances Pesticide Residue Analysis Capability: Application to the Annual Victorian Produce Monitoring Program

摘要

The Victorian state( Australia) Department of Primary Indus tries (DPI) has conducted a targeted monitoring of Victorian produce,through the Victorian Produce Monitoring Program(VPMP)on an annual basis since 1987. The objectives of the program are to monitor unacceptable chemicalresidues and contaminants in a range of Victorian grown fresh horticultural produce and to determine the concentration of these chemical residues in the produce. The cause of unacceptable chemicalresidues is then followed up and appropriate corrective action taken. In recent years,the more selective,less toxic and lower persistence "new" generation pesticideshave replaced the "older" generation pesticides. These new pesticides and their degradation productsor metabolites are often either more polar or non volatile,and thus cannot be analysed by gas chromatography.