Automated Photometric Determination of Lead using Metrohm’s Optrode Sensor

This application note describes the use of Metrohm’s Optrode Sensor for titration, with photometric endpoint recognition in the determination of lead in an aqueous solution at pH 4 to 5 by back-titration with zinc sulfate. The equivalence point is detected with the Optrode at a wavelength of 574 nm.