Graphite-silver diethyldithiocarbamate as a new potentiometric sensor for titration of some metals,halides, thiols,and sulfonamides

A new simple potentiometric sensor based on the precipitation of AgDDC within a graphite rod is described. The electrode is sensitive for both DDC and silver ions down to 10^?5M and can be used as an indicator electrode for complexometric titration of metallic ions with NaDDC and argentimetric titration of some organic and inorganic compounds. Accurate results are obtained for microdetermination of some metal ions singly or simultaneously (in binary and tertiary mixtures and alloys) and thiols, sulfonamides, and halides in organic compounds.