Automated chloride analysis in catalytic science: a low-cost hardware and software implementation

A simple computerized potentiometric titrator is described for performing a utomated analyses of chloride ions on solid materials as well as the contin uous determination of HCl in effluent gas streams. This versatility has bee n obtained by a dedicated instrumental design, which offers easy interfacin g to catalytic reactors and flexibility in software programs, including Gra n's plot determination of end-points. The validation of the analytical meth odology for quantitative determination of chloride ions in solid matrices r equired the definition and the preparation of suitable reference materials of known chloride content.