Half-Life Study of Imidacloprid in Stored Wheat Grain at Different Temperatures

Imidacloprid is mainly used as seed treatment before sowing. Despite its moderate toxic effect, its excessive use may lead to adverse effects on health. The present study was conducted to evaluate the persistence of imidacloprid in wheat grains at 28±2°C and 18±1°C and also the time required for degradation of imidacloprid residues in wheat grains down to MRL was determined. Liquid chromatographic technique with UV detection was used with mobile phase (acetonitrile: water - 80:20) and analyses of imidacloprid were monitored at 270nm with flow rate of 0.7mL min . The rate of degradation of imidacloprid in wheat grains was 1