DETERMINATION OF CADMIUM IN ROCKS BY NEUTRON-ACTIVATION ANALYSIS

Journal Article · Thu Jun 01 04:00:00 EDT 1961 · Analyst

DOI:https://doi.org/10.1039/an9618600386· OSTI ID:4040233

Bilefield, L I; Vincent, E A

A neutron-activation method was developed for determining 0' 1 to 1 ppm of Cd in rccks. It depends on the separation of Cd/sup 115/ (half-life 55 hours) with added Cd carried from a solution of the irradiated powdered rock by successive precipitations with trimethylphenylammonium iodide, 5,6-benzoquinoline and brucine. The precipitates are re-dissolved in a mixture of H/sub 2/SO/sub 4/ and HClO/sub 4/, and the Cd is finally mounted for beta counting as its brucinium salt. Standards are prepared by irradiating microgram amounts of Cd acetate. The method was applied to a suite of rocks from the Skaergaard Intrusion, Greenland, and also to the international standard rock samples G-1 and W-1. (auth)

• Research Organization: University Museum, Oxford
• NSA Number: NSA-15-023459
• OSTI ID: 4040233
• Journal Information: Analyst, Journal Name: Analyst Vol. Vol: 86
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACETATES
ACTIVATION ANALYSIS
AMMONIUM COMPOUNDS
BENZENE
BRUCITE
CADMIUM
CADMIUM 115
CADMIUM COMPOUNDS
CHEMISTRY
GREENLAND
HALF-LIFE
HETEROCYCLICS
HYDROXIDES
IGNEOUS ROCKS
IODIDES
IRRADIATION
METHYL RADICALS
NEUTRONS
ORGANIC COMPOUNDS
ORGANIC IODINE COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PERCHLORIC ACID
PHENYL RADICALS
PRECIPITATION
PREPARATION
QUANTITATIVE ANALYSIS
QUINOLINE
ROCKS
SAMPLING
SEPARATION PROCESSES
SOLUTIONS
STANDARDS
SULFURIC ACID