Uniform Sampling Table Method and its Applications II—Evaluating the Uniform Sampling by Experiment. (27th November 2019)

• Record Type: Journal Article
• Authors: Chen, Yibin; Chen, Jiaxi; Chen, Xuan; Wang, Min; Wang, Wei
• Is Part Of: Journal of AOAC International. Volume 98:Number 5(2015)
• Page Start: 1455
• Page End: 1461
• Publication Date: 2019-11-27
• Subjects: Agricultural chemistry -- Periodicals; Food -- Analysis -- Periodicals; 543
• DOI: 10.5740/jaoacint.13-265
• Languages: English
• ISSNs: 1060-3271

Abstract

Abstract: A new method of uniform sampling is evaluated in this paper. The items and indexes were adopted to evaluate the rationality of the uniform sampling. The evaluation items included convenience of operation, uniformity of sampling site distribution, and accuracy and precision of measured results. The evaluation indexes included operational complexity, occupation rate of sampling site in a row and column, relative accuracy of pill weight, and relative deviation of pill weight. They were obtained from three kinds of drugs with different shape and size by four kinds of sampling methods. Gray correlation analysis was adopted to make the comprehensive evaluation by comparing it with the standard method. The experimental results showed that the convenience of uniform sampling method was 1 (100%), odds ratio of occupation rate in a row and column was infinity, relative accuracy was 99.50–99.89%, reproducibility RSD was 0.45–0.89%, and weighted incidence degree exceeded the standard method. Hence, the uniform sampling method was easy to operate, and the selected samples were distributed uniformly. The experimental results demonstrated that the uniform sampling method has good accuracy and reproducibility, which can be put into use in drugs analysis.