Patent ID: 6358747
Filing Date: 2002-03-19
Classification: G01N

Abstract:
A method of quantitatively analyzing molybdate inhibitor present in lithium bromide brine, comprising the steps of:obtaining a sample of the lithium bromide brine containing an unknown quantity of molybdate inhibitor; mixing a selected reagent which consists of SnCl2 in HCl () with the sample to create a characteristic color of the sample in the presence of molybdate inhibitor, the intensity of the characteristic color being a function of the concentration of molybdate inhibitor and corresponding to a wavelength in the range of about 520-580 nm; analyzing the sample to determine the presence and the intensity of the characteristic color; and providing an indication of the concentration of molybdate inhibitor in the lithium bromide brine of the sample as a function of the presence and intensity of the characteristic color.