Study of multiparametric method of analysis of tricomponent nitric acid solutions

Equations of dependences of acid and salt concentrations on two parameters (density, electric conductivity or viscosity) and temperature are obtained using the regression analysis according to the earlier data on properties of the system: nitric acid-alkali metal salt - water at different temperatures. Errors of definitions are evaluated using the multiparametric method along with permissible microcomponent amounts (about 1% of macrocomponent amount: acids and salts), effect of errors of measurement of solution parameters and correlation coefficients between parameters. Errors concentration determination constitute MRSE+-2-5 rel.% for the systems with alkaline metal salt representing one of macrocomponets