A method for controlling the residual content of soluble organic contaminants on the surface of the product after cleaning solvents

摘要

A method for controlling the residual soluble organic contaminants on the surface of the article after cleaning solvents, comprising control degreasing solvent and subsequent determination of contained impurities by known techniques, characterized in that the solvent sample used in the control degreasing, in a special vessel was evaporated at a temperature at the boiling temperature of the solvent, until complete evaporation of the solvent, after which the vessel is refilled dissolved special solvent control, providing the possibility of determining the presence in it and evaluation of organic contaminants methods register their full spectral maintained to dissolve the contaminants are concentrated in the vessel and then determining the integrated concentration of organic contaminants all the necessary methods, and estimate a residual content of residual organic contaminants on the surfaces of the product is determined by the relation: m = 10 (C b), mg / m, where: C - the concentration of the integral sun its range of organic contaminants in the control solvent, mg / l; b - the average film thickness of the solvent used in the degreasing control, on surfaces of the product after removing the solvent from the wash chamber volume, dm.