Evaluation of the stability of the results of studies of beef for lead content using the additive method

Abstract

Abstract The obtained monitoring results indicate that in the range of less than 0.01 mg of lead per 1 kg of beef prevails (51.9%) over other ranges. The least registered sample results (3.4%) with the range of obtained data - 0.1-1.0 mg / kg. The primary and important task remains to ensure the control of the quantitative content of lead, the introduction and application of fast and reliable methods of their research. The analysis of the obtained data results shows that all the results on the study of beef for the content of lead, obtained by stripping voltammetry and atomic absorption spectrometry methods for assessing the precision and operational control of the error using the additive method, are satisfactory. By implementing the methods of stripping voltammetry and atomic absorption spectrometry, the best precision of research results in the testing laboratory is achieved, both under repeatability conditions and under conditions of intermediate precision.