Development of the state secondary measurement standard and certified reference materials for composition on the basis of liquid and gas chromatography

Standartnye Obrazcy

Irina Yu. Tkachenkob¹  Alena Yu. Mikheeva¹  Anatoliy I. Krylovb¹  Maria Yu. Medvedevskikh²  Svetlana G. Makarova²  Maria P. Krashenininaa²  Olga S. Shokhinaa² 

[1] D.I. Mendeleyev Institute for Metrology;Ural Research Institute for Metrology;

关键词: эталоны;    стандартные образцы;    газовая хроматография;    жидкостная хроматография;    прослежи-ваемость результатов измерений;    стандартный образец состава п;    п-ддт;    стандартный образец состава раствора бенз(а)пирена в ацетонитриле;    токсичные вещества;    measurement standards;    certified reference materials;    gas chromatography;    liquid chromatography;    traceability of measurement results;    crm for composition of p;    p-ddt;    crm for composition of benz(a)pyrene solution in acetonitrile;    toxic substances;   

DOI  :  10.20915/2077-1177-2017-13-1-9-26

来源: DOAJ

【 摘 要 】

The article is devoted to the development of the state secondary measurement standard of mass fraction units and mass (molar) concentration of organic components in liquid and solid substances and materials based on gas and liquid chromatography. The composition of the state secondary measurement standard, as well as the results of evaluating metrological characteristics have been considered. The problem of ensuring the traceability of measurement results to SI units is given in the article. Two approaches are proposed for obtaining a unit from the state primary standard of mass (molar) fraction units and mass (molar) concentration of organic components in liquid and solid substances and materials based on liquid and gas chromatography-mass spectrometry with isotopic dilution and gravimetry GET 208-2014: by comparing and using transfer standards. Examples of implementing the indicated approaches used during the development of reference materials of toxic substances, namely a certified reference material for composition of p,p-DDT (p,p-DDT, CRM of UNIIM) and a certified reference material for composition of benz(a)pyrene solution in acetonitrile (C20H12, CRM of UNIIM) are given. Results of determining metrological characteristics of reference materials including standard uncertainty due to characterization and standard uncertainties due to inhomogeneity, short and long-term instabilities are described.

【 授权许可】

Unknown