Polarographic determination of selenium and tellurium in silver-gold alloys

Journal Article · Sat May 10 04:00:00 EDT 1986 · J. Anal. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:7225531

Gornostaeva, T D; Shmargun, S V

The determination of selenium and tellurium is of importance in monitoring the composition of silver-gold alloys (SGA) since these elements are harmful impurities in the pure metals. Tellurium is determined in silver alloys by atomic absorption and atomic emmission methods; selenium determination is made by atomic absorption methods. This paper examines the polarographic determination of silver and tellurium in SGA containing platinum metals and copper. Copper and the bulk of the platinum and palladium were removed by precipitating selenium and tellurium with potassium hypophosphite in the elementary state from 6 M HC1. The results of an analysis of samples of SGA according to the proposed method were compared with the results obtained by the atomic absorption method. the relative deviation in the determination of 0.02-1.0% by weight selenium and tellurium does not exceed 0.12 (n = 5).

• Research Organization: Irkutsk State Sci-Res. Institute of Rare and Nonferrour Metals
• OSTI ID: 7225531
• Journal Information: J. Anal. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Anal. Chem. USSR (Engl. Transl.); (United States) Vol. 40:11,PT. 2; ISSN JACUA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ABSORPTION SPECTROSCOPY
ALLOYS
CHEMICAL ANALYSIS
ELEMENTS
EMISSION SPECTROSCOPY
GOLD ALLOYS
IMPURITIES
POLAROGRAPHY
QUANTITATIVE CHEMICAL ANALYSIS
SELENIUM
SEMIMETALS
SILVER ALLOYS
SPECTROSCOPY
TELLURIUM