Determination of radium-224, -226, and -228 by coincidence spectrometry
A radiochemical technique for the quantitative determination of /sup 224/Ra, /sup 226/Ra, and /sup 228/Ra which affords high sensitivity measurements and high sample throughput with a minimum number of chemical steps is described. The basis of the technique is the coincidence measurement of the characteristic particle-photon emissions of the isotopes: the ..cap alpha..-..gamma.. coincidence emissions of /sup 224/Ra and /sup 226/Ra and the ..beta..-..gamma.. coincidence emissions of /sup 228/Ac, the first short-lived decay product of /sup 228/Ra. The radiochemical procedure for a water medium and the nuclear measurements technique and calibration are described. Under normal operating conditions, minimum detectable concentrations of 0.2, 0.3, and 0.5 pCi/L can be attained for /sup 224/Ra, /sup 226/Ra, and /sup 228/Ra, respectively, based on a 1-L sample and 200-min count.
- Research Organization:
- Yankee Atomic Electric Co., Framingham, MA
- OSTI ID:
- 5828568
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 53:14; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400103* -- Radiometric & Radiochemical Procedures-- (-1987)
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
ALPHA SPECTROSCOPY
BETA DECAY RADIOISOTOPES
BETA SPECTROSCOPY
BETA-MINUS DECAY RADIOISOTOPES
CALIBRATION
CHEMICAL ANALYSIS
COINCIDENCE METHODS
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
EVEN-EVEN NUCLEI
GAMMA SPECTROSCOPY
HEAVY NUCLEI
ISOTOPES
NUCLEI
QUANTITATIVE CHEMICAL ANALYSIS
RADIOCHEMICAL ANALYSIS
RADIOISOTOPES
RADIUM 224
RADIUM 226
RADIUM 228
RADIUM ISOTOPES
SPECTROSCOPY
YEARS LIVING RADIOISOTOPES