CONTINUOUS SCINTILLATION COUNTING OF CARBON-14 AND TRITIUM IN EFFLUENT OF THE AUTOMATIC AMINO ACID ANALYZER

Journal Article · Sat Dec 01 04:00:00 EST 1962 · Analytical Biochemistry (U.S.)

DOI:https://doi.org/10.1016/0003-2697(62)90126-4· OSTI ID:4739772

Piez, K A

The construction of a quartz cell containing crystalline anthracene for continuous determination of carbon-14 and tritium in the effluent of the amino acid analyzer is described. The cell can be used with standard scintillation counters permitting efficiencies of 38%~ at 18 cpm background or 27% at 7 cpm background for C/sup 14/ and 0.9 and 0.7% with the same backgrounds for tritium. Depending on the choice of instrumentation the results can be indicated by a rate meter and recorder, or they can be simultaneously printed on tape and indicated on the recorder of the amino acid analyzer. Carbon-14 and tritium can be determined in the same experiment in different amino acid peaks or, with the use of two charinels in the conventional manner, in the same peak. A C/sup 14/ activity of about 1000 dpm can be determined with a 5% standard error. Above 3000 dpm the error is 1--3%. About forty-fold higher activities are required for tritium. (auth)

• Research Organization: National Inst. of Health, Bethesda, Md.
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-005709
• OSTI ID: 4739772
• Journal Information: Analytical Biochemistry (U.S.), Journal Name: Analytical Biochemistry (U.S.) Vol. Vol: 4; ISSN ANBCA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AMINO ACIDS
ANTHRACENE
BACKGROUND
BIOLOGY AND MEDICINE
CARBON 14
CRYSTALS
EFFICIENCY
ERRORS
INSTRUMENTS
RATE METERS
RECORDING SYSTEMS
SCINTILLATION COUNTERS
TRITIUM