Radioassay of Methanethiol-Sulfur-35 and Methanethiol-Carbon-14.

Journal Article · Thu Mar 01 04:00:00 EST 1962 · Analytical Chemistry

DOI:https://doi.org/10.1021/ac60183a011· OSTI ID:4807379

Herber, R. H.

A method for the radioassay of sulfur-35-labeled methanethiol is based on the precipitation of the mercuric salt of the methyl sulfide anion when the labeled mercaptan is transferred by high vacuum gas handling techniques into an aqueous solution of mercuric cyanide. The precipitates are filtered into M-grade sintered-glass crucibles, washed with distilled water and 95% alcohol, and then dried to constant weight at 85 plus or minus 5-C. Radioassay of the precipitates which have been prepared in layers of uniform thickness is carried out using a thin-window gas flow counter. Correction factors for the self absorption of the soft beta radiation in the samples were determined and good reproducibility of specific activity was obtained. Finally, the method is equally applicable to the radioassay of methanethiol-carbon-14.

• Research Organization: Rutgers Univ., New Brunswick, N.J.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-011710
• OSTI ID: 4807379
• Journal Information: Analytical Chemistry, Journal Name: Analytical Chemistry Journal Issue: 3 Vol. 34; ISSN 0003-2700
• Publisher: American Chemical Society (ACS)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ALCOHOLS
BETA PARTICLES
CARBON
CHEMISTRY
CLEANING
COUNTERS
CRUCIBLES
CYANIDES
ERRORS
EVAPORATION
FILTERS
GAS FLOW
GASES
GLASS
LABELLED COMPOUNDS
LAYERS
MERCAPTAN
MERCURY
METHANE
METHYL RADICALS
ORGANIC SULFUR COMPOUNDS
PRECIPITATION
PREPARATION
RADIOCHEMISTRY
SINTERED MATERIALS
SOLUTIONS
SULFIDES
SULFUR
TEMPERATURE
THICKNESS
THIOLS
VACUUM
WATER