Accession Number : AD0690695

Title :   THE USE OF COPPER STANDARDS WITH COPPER FLUORIDE AS THE CARRIER IN THE DETERMINATION OF TRACE IMPURITIES IN SILVER, GOLD AND THE PLATINUM METALS,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF APPLIED CHEMISTRY

Personal Author(s) : Tymchuk,P. ; Goodhue,E. C. ; Russell,D. S.

Report Date : 1969

Pagination or Media Count : 4

Abstract : A study has shown that copper fluoride is an effective carrier distillation agent for the detection of impurities in the noble metals and permits their determination in some cases down to concentrations lower than can be achieved by other spectrographic methods. Under the recommended conditions, common impurities in copper, silver, gold, platinum and probably palladium produce line intensities which are independent of the matrix material, thus permitting the use of a single copper standard for the determination of impurities in each of these metals. This greatly simplifies the analysis and is particularly useful with metals where standard samples are not available. Low results are obtained with platinum and palladium unless copper is added to lower the melting point of the sample. (Author)

Descriptors :   (*COPPER COMPOUNDS, *ATOMIC SPECTROSCOPY), (*SILVER, ATOMIC SPECTROSCOPY), (*GOLD, ATOMIC SPECTROSCOPY), (*PLATINUM, ATOMIC SPECTROSCOPY), CHEMICAL ANALYSIS, IMPURITIES, FLUORIDES, CANADA

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE