Spreadsheet method for /sup 90/Sr and /sup 89/Sr interpretation
A spreadsheet method of handling multiple data points is described for the interpretation of ''radiostrontium'' analyses. The method uses up to 10 or more counts on one sample, starting 1 d after the chemical separation. The unreliable ''day-0'' count on a relatively low activity sample is not used since it introduces too many uncertainties. The count data for each sample are compared against a spreadsheet-calculated matrix of ingrowth/decay curves from 0 to 100% /sup 90/Sr and at the analytical count intervals between about 24 to 650 h after the chemical separation to determine the best fit of the data set. This fit occurs where the decay/ingrowth characteristics of the sample, as defined by the changing counts, most closely match those of the matrix for all of the data points. At this fit, the /sup 89/Sr and /sup 90/Sr percentages are defined, and the best estimate of the time-0 counts is calculated using all of the counts. Secondary separations and analyses are not required.
- Research Organization:
- New Brunswick Electric Power Commission, Fredericton
- OSTI ID:
- 5523596
- Journal Information:
- Health Phys.; (United States), Journal Name: Health Phys.; (United States) Vol. 54:1; ISSN HLTPA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Rapid determination of radiostrontium in seawater samples
Rapid method to determine actinides and 89/90Sr in limestone and marble samples
Related Subjects
400101* -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
ALKALINE EARTH ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGY
CHEMICAL ANALYSIS
COMPUTER CALCULATIONS
DAYS LIVING RADIOISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEI
QUANTITATIVE CHEMICAL ANALYSIS
RADIOBIOLOGY
RADIOISOTOPES
RADIOMETRIC ANALYSIS
STRONTIUM 89
STRONTIUM 90
STRONTIUM ISOTOPES
YEARS LIVING RADIOISOTOPES