Selenium, Tellurium and Polonium - ScienceDirectDetailed procedures for isolation and purification depend on the relative concentrations of selenium, tellurium, and other impurities, but a typical sequence.selenium tellurium impurities,Effect and control of impurities in electrolytic zinc . - EprintsNMLEffect and control o.j impurities in electron tic zinc production. TABLE IV Commercial . mony, germanium, tin, selenium, tellurium, cadmium, lead, chlorine.
selenium tellurium impurities