title: Substoichiometric determination of traces of gold by radioactive isotope-dilution analysis.
abstract: A radioactive isotope-dilution method for the determination of traces of gold has been developed. It is based on the solvent extraction of gold diethyldithiocarbamate from 0-5N sulphuric acid containing ascorbic acid, by means of a substoichiometric amount of zinc diethyldithiocarbamate in chloroform. The separation has been applied to the analysis of gold-doped semiconductor-grade silicon and of gold-bearing ores. Amounts of gold down to 5 x 10(-7)g 20 ml of test solution can be determined.
authors.affiliation: Department of Chemistry, The University of Aston in Birmingham, Birmingham 4, England.
authors.forename: D A
authors.initials: DA
authors.lastname: Beardsley
authors.forename: G B
authors.initials: GB
authors.lastname: Briscoe
authors.forename: J
authors.initials: J
authors.lastname: Růzicka
authors.forename: M
authors.initials: M
authors.lastname: Williams