Study on Pretreatment Method of Pesticide Residue Detection in Dried Pepper
Explore the pretreatment method of pesticide residue detection in dried pepper.In this paper,the pre-treatment methods of extraction method and time,organic reagent,extraction method,concentration method about dried pepper were compared with the test results of third-party external inspection institutions to discuss the influence on the final pesticide residue detection type and detection amount,and to analyze the best detection method suitable for dried pepper.The samples were treated by ultrasound for 10 min after adding water,then 15 mL acetonitrile and CNW dSPE type extraction package were added,purified and centrifuged,then blown to dry with air at room temperature and re-dissolved with internal standard solution.The test results were the closest to those of the third-party external inspection institutions.This study optimized the pretreatment process on the basis of national standards,adopted the temperament conditions suitable for the equipment,and established an economic,operational and suitable for the quantitative analysis of agricultural residues in dried chili pepper agricultural and sideline products.It can provide an economical and simple method for small and medium-sized enterprises to detect the content of agricultural residues by themselves.
万方数据
维普
