Objective To establish a preparation method for carbamate pesticide residue quality control samples in vegetable freeze-dried powder, and to evaluate the preparation technology. Methods The quality control samples were prepared by using cabbage as substrate and methomyl as the target. Quality control samples were prepared by vacuum freeze-drying and matrix addition Liquid chromatography-tandem mass spectrometry was used to determine the content of the target substance in the controlled samples. The homogeneity of the samples was evaluated by random sampling, and the stability of the samples was evaluated by observing the changes in the test results of the objects within 12 months of the samples. Results The prepared quality control samples had good homogeneity and stability. It was convenient for the samples to storage and transportation and the concentration level of target in samples, which were stored at room temperature, was stable during the testing time. The measured value of methomyl in prepared quality control samples agreed with the target value of preparation. Conclusion This study established the feasibility of the study on the quality control samples of vegetable freeze-dried powder, and the established preparation technology could ensure the accuracy of the fixed value results of the quality control samples, providing technical support for the development of the quality control samples of carbamate pesticide residues.
标题：氨基甲酸酯类农药残留质控样品的制备与评价-以灭多威为例
英文标题：Preparation and evaluation of quality control samples of carbamate pesticide residues-a case study of methomyl
