A quantitative analysis of sodium carboxymethylcellulose in the medicine

摘要

In the present invention, the test solution and the standard solution are added to a test tube of a glass stopper at a constant volume ratio with the separately prepared reaction solution, immediately mixed at 90 to 105 C for 2 hours, and cooled. Measuring the absorbance of the test solution and the reaction solution treated by the method; And calculating a content ratio of sodium carboxymethylcellulose in the formulation to the indicated amount by substituting the measured absorbance into the formula to determine the amount of carboxymethylcellulose sodium in the preparation according to the above quantitative method, Determining a content ratio with respect to the display amount of And comparing the determined content ratio with a reference value to determine the quality of the preparation, a method of quality assurance (QA) of a preparation containing sodium carboxymethyl cellulose sodium and a method of preparing a standard of carboxymethylcellulose sodium in a predetermined range Preparing a plurality of selected standard solutions of known concentrations; Preparing a calibration curve from the absorbance measured for the plurality of standard solutions at a specific wavelength to derive a linear equation of absorbance according to the concentration; And calculating the corresponding concentration value by substituting the absorbance of the sample solution measured at the same wavelength as that in the standard solution into the derived equation and determining the concentration of the sodium carboxymethyl cellulose sodium in the sample solutionThereby providing a quantitative method.;