Preparation and application of proficiency testing sample of myclobutanil and procymidone in apple powder
10.19428/j.cnki.sjpm.2022.22128
- VernacularTitle:苹果粉中腈菌唑和腐霉利能力验证样品的研制与应用
- Author:
Jing SHAO
1
;
Yuhang CHEN
1
;
Chao FENG
1
;
Guoquan WANG
1
;
Xinlei QIU
1
Author Information
1. Shanghai Municipal Center for Disease Control and Prevention， Shanghai 200336， China
- Publication Type:Journal Article
- Keywords:
apple powder;
myclobutanil;
procymidone;
gas chromatograph-mass spectrometer;
proficiency testing
- From:
Shanghai Journal of Preventive Medicine
2022;34(6):607-610
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo prepare pesticide residues in fruit matrix samples that meet the requirements of homogeneity and stability for the proficiency test. MethodsThe pollution-free apple was selected as the main raw material to prepare the pesticide residue proficiency test samples of myclobutanil and procymidone， and to evaluate the homogeneity and stability. The results of the proficiency test were assessed using robust analysis and Ζ value. ResultsThe homogeneity and stability of the reference materials met the relevant requirements. Among 109 laboratories participated in the proficiency testing， 107 （98.2%） laboratories had satisfactory results. Suspicious test results were reported only in two laboratories， one laboratory for each of the two assessment items. ConclusionAn apple powder matrix sample with pesticide residues is successfully prepared for proficiency test， and could provide an evaluation tool for pesticide residue testing laboratories.
