THE ABSOLUTE COUNTING OF SULFUR-35

Journal Article · Tue Mar 01 04:00:00 EST 1960 · Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.

DOI:https://doi.org/10.1021/ac60159a003· OSTI ID:4190853

Merritt, J S; Taylor, J G.V.; Merritt, W F; Campion, P J

Several methods for determining the absolute disintegration rate of a stock solution of sulfur-35 are presented and compared. These include differential gas counting as sulfur dioxide, 4 pi beta counting with suitable corrections, and a tracer method. A technique is described for preparing sources for 4 pi beta counting in which a minute quantity of colloidal silica is added to improve the uniformity of the deposit. The corrections associated with 4 pi beta counting are described, the largest being that due to self-absorption. In the tracer method.,a beta - gamma -emitting nuclide suitable for coincidence counting is combined with the sulfur-35 and used as a tracer to follow the efficiency for counting sulfur-35. Experimental justification for this method is presented. The mean of these independent determinations has a standard deviation of about 1%. (auth)

• Research Organization: Atomic Energy of Canada Ltd., Chalk River, Ont.
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-008448
• OSTI ID: 4190853
• Journal Information: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed., Journal Name: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. Vol. Vol: 32; ISSN ANCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BETA PARTICLES
CHEMISTRY
COLLOIDS
COUNTERS
DECOMPOSITION
EFFICIENCY
EMISSION
GAMMA RADIATION
MEASURED VALUES
PREPARATION
RADIATION SOURCES
SILICON OXIDES
SOLUTIONS
SULFUR 35
SULFUR OXIDES
TRACER TECHNIQUES