Effects of residual dichlorvos removal on cucumber by instantaneous vacuum treatment

Different intensity of instantaneous vacuum,temperature and containing time which affect removal dichlorvos efficiencies were investigated in this paper.Worthwhile,the optimal condition about removal dichlorvos was discussed.The effectiveness of removal dichlorvos by reversed-phase chromatography separation(RP-HPLC) was also investigated.The results showd that removal rate of dichlorvos reached 50.9% under the optimal conditions which was 96 kPa intensity of pulse vacuum,35 ℃ lasting 30minutes.Cucumbers which exposed under the optimal conditions could still maintain good physiological qualities.The amount of residual dichlorvos could be accurately detected by high performance liquid chromatography.After all,the instantaneous vacuum was feasible to remove residual dichlorvos.