Preparation and Evaluation of Proficiency Testing Sample of Benzo[α]pyrene in Plant Oil
The proficiency testing samples of benzo[α]pyrene in plant oils were prepared and evaluated for homogeneity and stability to provide technical guidance for laboratories to make blind samples and organize proficiency testing.Using edible plant oil as raw material,2 groups of benzo[α]pyrene proficiency testing samples with different concentrations were prepared,and 10 randomly selected samples from each group were used to determine the benzo[α]pyrene content in the samples in accordance with the method of GB 5009.27-2016;the assessment samples were placed in ambient ambient conditions and stored for 3 months,and the samples before and after the storage were determined by the above method,to evaluate the homogeneity and stability of the samples.The results showed that the homogeneity of the sample was qualified and the stability of the sample was good within 3 months,which can be used for the proficiency testing of benzo[α]pyrene in plant oils in different laboratories.
万方数据
维普
