Spectrophotometric extracave titrations-VII Titrations with di-2-naphthylthiocarbazone.
An investigation of the possibilities of the use of di-2-naphthylthiocarbazone as titrant in spectrophotometric extractive titrations has been undertaken. A selective procedure for successive titration of silver in an ammoniacal medium has been developed and applied to the analysis of germanium dioxide. It has been established that the consecutive titration of mercury and zinc in the microgram range is possible. Because of low selectivity of this titration, a separation of mercury and zinc from other ions is necessary.
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Lachema, N. C., Kaznejov District Pilsen NorthCzechoslovakia.