Considerations of acidifying water samples for 99Tc analysis

Journal Article · Sun Aug 01 00:00:00 EDT 1993 · Health Physics; (United States)

DOI:https://doi.org/10.1097/00004032-199308000-00014· OSTI ID:6030820

Blanchard, R L; Lieberman, R; Richardson, III, W S; Wakamo, C L ^[1]

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1. S. Cohen and Associates, Inc., Montgomery, AL (United States)

Environmental water samples are routinely acidified before radionuclide analysis to prevent adsorption of radionuclides on the container walls. This study addresses the concern for volatilizing 99Tc from acid solutions during evaporation before beta analysis has been addressed. Water samples can be acidified to pH 1.7 with nitric acid and evaporated to dryness on planchets without significant losses of technetium due to volatilization. However, the planchets should not be flamed unless a detergent is used, and control samples should be flamed to determine the loss of activity under the conditions used.

• OSTI ID: 6030820
• Journal Information: Health Physics; (United States), Vol. 65:2; ISSN 0017-9078
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CONTAINERS
CONTAMINATION
TECHNETIUM 99
EVAPORATION
RADIOCHEMICAL ANALYSIS
WATER
ACIDIFICATION
SAMPLE PREPARATION
NITRATES
NITRIC ACID
WATER POLLUTION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL ANALYSIS
HOURS LIVING RADIOISOTOPES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NITROGEN COMPOUNDS
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
POLLUTION
QUANTITATIVE CHEMICAL ANALYSIS
RADIOISOTOPES
TECHNETIUM ISOTOPES
YEARS LIVING RADIOI
540330* - Environment
Aquatic- Radioactive Materials Monitoring & Transport- (1990-)