Patent ID: 7867772

Claim:
A method for the determination of the CaCO 3 content of a scrubbing liquid, which has been separated from a scrubbing liquid circuit of a scrubbing column, comprising the steps of: separating a predetermined scrubbing liquid test volume from a separate, continuously available scrubbing liquid volume flow using a sampling trap, which separating further comprises the steps of: damming up a predetermined scrubbing liquid volume inside said sampling trap by closing all stop valves in each outlet of said sampling trap; and enclosing the predetermined scrubbing liquid volume in said sampling trap by closing a stop valve in a scrubbing liquid inlet of said sampling trap; supplying the scrubbing liquid test volume to a measuring cell by opening a stop valve in a measuring cell outlet of said sampling trap, dosage and supplying of a predetermined HCl volume directly to the measuring cell downstream of the sampling trap, mixing of the supplied volumes, awaiting the end of a predetermined reaction time, measuring the pH value of the supplied volumes, and determining the CaCO 3 content of the test volume based upon the change of the measured pH value.