Procedure for separation of Se and determination of Se-79 by liquid scintillation
This report describes the development work and demonstration of a technique for separation of selenium suitable for determination of Se-79 by liquid scintillation counting. The technique has been demonstrated on actual DWPF (Defense Waste Processing Facility) sludge samples which contain very large loads of Sr-90 activity. The separation required a decontamination of selenium from Sr by a factor of over 10{sup 6}, from Co and Cs by factor of 10{sup 4}, and from Tc-99 by a factor of 100, while still maintaining a selenium recovery of about 50%. Using this technique the author has determined Se-79 in five actual DWPF samples with a precision of about 70% relative standard deviation. This separation has not been demonstrated on actual DWPF samples which have the largest Cs-137 loads. He does not anticipate that these untested samples will present a difficult problem.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 10191833
- Report Number(s):
- WSRC-RP-91-865; ON: DE94001808; TRN: AHC29313%%3
- Resource Relation:
- Other Information: PBD: 11 Aug 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
SELENIUM
ION EXCHANGE
SELENIUM 79
SCINTILLATION COUNTING
MATERIALS RECOVERY
SLUDGES
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE EFFLUENTS
STRONTIUM 90
COBALT
CESIUM
TECHNETIUM 99
ACCURACY
400105
052001
SEPARATION PROCEDURES
WASTE PROCESSING