SUSPENSION SCINTILLATION COUNTING OF CARBON-14 BARIUM CARBONATE

Journal Article · Thu Mar 01 04:00:00 EST 1962 · Analyst

DOI:https://doi.org/10.1039/an9628700170· OSTI ID:4803209

Cluley, H J

A study was made of the suspension scintillation counting of carbon-14 barium carbonate with a very finely divided silica as the suspending agent. A 4% wt/vol concentration of the silica in the scintillator solution (0.3% wt/vol of 2,5-diphenyloxazole in toluene) gives an almost transparent gel capable of suspending up to 1 g of barium carbonate in 10 ml of solution. Counting efficiency was found to decrease somewhat with increasing concentration of barium carbonate; 0.1 and 0.5 g of barium carbonate gave counting efficiencies of 60 and 49%, respectively, compared with 7l% for solution scintillation counting of carbon-14 under the same instrumental conditions. The high efficiencies with which substantial amounts of barium carbonate can be counted by the suspension technique represent a considerable gain over the efficiency of about 1% obtained by Geiger counting of barium carbonate under infinite thickness condttions. (auth)

• Research Organization: General Electric Co., Ltd., Wembley, Eng.
• NSA Number: NSA-16-013089
• OSTI ID: 4803209
• Journal Information: Analyst, Journal Name: Analyst Vol. Vol: 87
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BARIUM CARBONATES
CARBON 14
CHEMISTRY
COLLOIDS
EFFICIENCY
GEIGER- MUELLER COUNTERS
ORGANIC NITROGEN COMPOUNDS
SCINTILLATION COUNTERS
SILICON OXIDES
SOLUTIONS
SUSPENSIONS
TOLUENE
TRACE AMOUNTS