Differential Potentiometric Determination of Tellurium in Refined Tellurium Products.

Spectrophotometric Determination of Copper in Tellurium and Related Thermoelectric Compounds of the Bismuth Telluride Type with 2,9-Dimethyl-1,10-phenanthroline.

“…In tellurium, copper is almost exclusively determined by spectrographic techniques (2,18,27), but recently it has been determined polarographically (13) or by various methods after ion exchange separation (16).…”