METHOD FOR QUANTITATIVE ANALYSIS OF METALS FROM SPENT CATALYST OF EXHAUST GAS CONSECRATION SYSTEM

摘要

The present invention relates to a method for quantitatively measuring metal contained in the waste catalyst of an exhaust gas purification system. The method comprises a step of injecting a first mixed solution in which a waste catalyst discharged from an exhaust gas purification device and a solvent including mixed acid with hydrofluoric acid, nitric acid, and hydrochloric acid, and a tellurium solution are contained into a sealed container and then primarily heating the first mixing solution using microwaves; a step of forming a second mixed solution by adding a solvent containing sodium chloride, hydrochloric acid, and a tellurium solution to the first mixed solution; a step of injecting the second mixed solution into the sealed container and secondarily heating the second mixed solution using the microwaves; a step of forming a third mixed solution by adding a solvent containing hydrochloric acid to the second mixed solution; and a step of quantitatively measuring the amount of metal contained in the third mixed solution. The present invention can analyze the waste catalyst in a short time by reducing the temperature rising time of the waste catalyst using the microwaves, and can precisely and quantitatively measure the amount of the metal of the waste catalyst by preventing the outflow of volatile matters of the metal to the outside or the inflow of the external foreign materials.