METHOD OF PHOTOMETRIC IDENTIFICATION AND DETERMINATION OF CONCENTRATION OF COMPONENTS OF TANK MIXTURE Russian patent published in 2020 - IPC G01N21/25 G01N21/77 G01N31/22 

FIELD: chemistry.

SUBSTANCE: invention relates to analytical chemistry and a method of photometric identification and determination of concentration of components of tank mixture. Method consists in sampling an aliquot of the mixture, diluting it, introducing a reagent-indicator of the determined ion, photometric determination of ion concentration. At that, in each component of the tank mixture at the production stage, an ion-label is introduced in an amount which is an order greater than the background level of the content of the given ion in the component of the tank mixture, aliquot is successively diluted with an organic polar solvent with dielectric permeability equal to 12–50 F/m, and water in volume ratio of aliquot : solvent : water equal to 1:0.5–11.05:0–7.55, and concentration of ion content of the component in the tank mixture is determined.

EFFECT: technical result is higher accuracy of preparing solutions and enabling determination of counterfeit products.

4 cl, 1 tbl