Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Evaluation of oxidation techniques for preparing bioassay and environmental samples for liquid scintillation counting

Technical Report ·
DOI:https://doi.org/10.2172/5163927· OSTI ID:5163927
In environmental and biological monitoring for carbon-14 and tritium, the presence of color and chemical quenching agents in the samples can degrade the efficiency of liquid scintillation counting. A series of experiments was performed to evaluate the usefulness, under routine conditions, of first oxidizing the samples to improve the counting by removing the color and quenching agents. The scintillation counter was calibrated for the effects of quenching agents on its counting efficiency. Oxidizing apparatus was tested for its ability to accurately recover the /sup 14/C and /sup 3/H in the samples. Scintillation counting efficiences were compared for a variety of oxidized and unoxidized environmental and bioassay samples. The overall conclusion was that, for routine counting, oxidation of such samples is advantageous when they are highly quenched or in solid form.
Research Organization:
California Univ., Livermore (USA). Lawrence Livermore Lab.
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
5163927
Report Number(s):
UCRL-52966
Country of Publication:
United States
Language:
English

Similar Records

LIQUID SCINTILLATION COUNTING OF PROMETHIUM-147, BIOASSAY PROCEDURE
Journal Article · Fri May 01 00:00:00 EDT 1964 · Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. · OSTI ID:4021188
DETERMINATION OF CARBON-14 AND TRITIUM IN BLOOD AND OTHER WHOLE TISSUES. LIQUID SCINTILLATION COUNTING OF TISSUES
Journal Article · Thu Dec 31 23:00:00 EST 1959 · Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. · OSTI ID:4218354
Manual calibration of liquid scintillation counter using the channel ratio technique
Journal Article · Thu Jul 01 00:00:00 EDT 1999 · Transactions of the American Nuclear Society · OSTI ID:20005727

Related Subjects

510301 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Soil-- (-1987)
510302* -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Terrestrial Ecosystems & Food Chains-- (-1987)
520301 -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- Water-- (1987)
520302 -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- Aquatic Ecosystems & Food Chains-- (-1987)
54 ENVIRONMENTAL SCIENCES
ACCURACY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOASSAY
CARBON 14
CARBON ISOTOPES
CHEMICAL REACTIONS
COLOR
COUNTING TECHNIQUES
DATA
DATA COMPILATION
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FLUIDS
HYDROGEN ISOTOPES
INFORMATION
ISOTOPES
LIGHT NUCLEI
LIQUIDS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
OXIDATION
PHYSICAL PROPERTIES
QUENCHING
RADIOISOTOPES
SAMPLE PREPARATION
SCINTILLATION COUNTING
SOLIDS
TRITIUM
YEARS LIVING RADIOISOTOPES