About results of participation in the development of State primary standard of nonorganic components in water solutions on the basis of gravimetric and spectral methods in comparisons of the Working group for nonorganic analysis of BIPM

A.A. Stakheev, T.P. Stolboushkina

Al’manac of Modern Metrology № 2 (14) 2018, pages 246–250

Method of gravimetric standard additives applicable to mass spectrometry and optical emis-sion spectroscopy and method of spectrometry with isotopic dilution for measurements of impuri-ties in drinking water, powder of leather and food additives are applied in work. The analysis of sources of measurements uncertainty was carried out. As a confirmation of correctness of the indicated methods of measurements, results of equipment involved in development of primary standard in the international comparisons: SIM.QM-S7 “Trace Metals in Drinking Water”, CCQM-KI28 “Measurement of Heavy Metals and Organo-Tin in Leather Powder и APMP.QM-SIO “Elements in Food Supplement” are provided.

Key words: dvlopment of primary standard, meods of measurements, driking water, international comparisons.

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