Evaluation of the use of the PLP-01M microwave laboratory system using working samples to control the accuracy of the results of examining product samples for lead content

Abstract

In order to compare the results obtained when working on the Kvant-2AT atomic absorption spectrometer, taking into account the use of the PLP-01M microwave laboratory system and during sample preparation in accordance with GOST 26929 “Raw materials and food products. Sample preparation. Mineralization to determine the content of toxic elements”, on the working samples, the products were selected that most fully covered the range of results obtained during the research. Within 30 working days, a set of research results and analysis of data obtained during operation on the Kvant-2AT atomic absorption spectrometer, taking into account the use of the PLP-01M microwave laboratory system and during sample preparation in accordance with GOST 26929, were carried out. Average values obtained under conditions repeatability were recorded in the table. In order to assess the accuracy of the obtained values, the analytic, lead, was added. The implementation of sample preparation methods taking into account the microwave decomposition of the sample in the case of using the PLP-01M microwave laboratory system and during sample preparation in accordance with GOST 26929-94 achieves the precision of the analysis results both under conditions of repeatability and under conditions of intermediate precision.