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Title: Automated Analysis of Radionuclides in Nuclear Waste:  Rapid Determination of 90Sr by Sequential Injection Analysis

Abstract

A rapid, automated, microanalytical procedure for the determination of 90Sr in aged nuclear waste has been developed. It is based on a sequential injection analysis (SIA) system which rapidly seperates 90Sr from 90Y, 137CS, and other radionuclides. The isolated 90Sr is then detected on-line with a flow-through liquid scintillation counter. The seperation is achieved using a sorbent extraction minicolimn containing a resin (EIChrom, Sr-Spec) that selectively binds 90Sr as a crown ether complex under acidic conditions. The 90Sr is eluted with water, mixed with liquid scintillation cocktail, and detected in quantified from peak areas, giving linear calibration curves. The instrument can also be operated in a stopped-flow mode for longer counting times. Analyses of aged nuclear waste samples from the Hanford site by the SIA method and a manual method were in excellent agreement: correlation coefficient R=0.994. Sample analysis by the SIA method is complete in less than 40 min. The advantages of the new 90Sr analyzer include faster analysis, greater precision, reduced labor costs, and reduced secondary waste. Worker safety is improved because solution handling operations are fully automated and contained.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1495339
Report Number(s):
PNNL-SA-26334
Journal ID: ISSN 0003-2700
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Analytical Chemistry
Additional Journal Information:
Journal Volume: 68; Journal Issue: 2; Journal ID: ISSN 0003-2700
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
Automated, Sequential Injection

Citation Formats

Grate, Jay W., Strebin, Robert, Janata, Jiri, Egorov, Oleg, and Ruzicka, Jaromir. Automated Analysis of Radionuclides in Nuclear Waste:  Rapid Determination of 90Sr by Sequential Injection Analysis. United States: N. p., 1996. Web. doi:10.1021/ac950561m.
Grate, Jay W., Strebin, Robert, Janata, Jiri, Egorov, Oleg, & Ruzicka, Jaromir. Automated Analysis of Radionuclides in Nuclear Waste:  Rapid Determination of 90Sr by Sequential Injection Analysis. United States. doi:10.1021/ac950561m.
Grate, Jay W., Strebin, Robert, Janata, Jiri, Egorov, Oleg, and Ruzicka, Jaromir. Mon . "Automated Analysis of Radionuclides in Nuclear Waste:  Rapid Determination of 90Sr by Sequential Injection Analysis". United States. doi:10.1021/ac950561m.
@article{osti_1495339,
title = {Automated Analysis of Radionuclides in Nuclear Waste:  Rapid Determination of 90Sr by Sequential Injection Analysis},
author = {Grate, Jay W. and Strebin, Robert and Janata, Jiri and Egorov, Oleg and Ruzicka, Jaromir},
abstractNote = {A rapid, automated, microanalytical procedure for the determination of 90Sr in aged nuclear waste has been developed. It is based on a sequential injection analysis (SIA) system which rapidly seperates 90Sr from 90Y, 137CS, and other radionuclides. The isolated 90Sr is then detected on-line with a flow-through liquid scintillation counter. The seperation is achieved using a sorbent extraction minicolimn containing a resin (EIChrom, Sr-Spec) that selectively binds 90Sr as a crown ether complex under acidic conditions. The 90Sr is eluted with water, mixed with liquid scintillation cocktail, and detected in quantified from peak areas, giving linear calibration curves. The instrument can also be operated in a stopped-flow mode for longer counting times. Analyses of aged nuclear waste samples from the Hanford site by the SIA method and a manual method were in excellent agreement: correlation coefficient R=0.994. Sample analysis by the SIA method is complete in less than 40 min. The advantages of the new 90Sr analyzer include faster analysis, greater precision, reduced labor costs, and reduced secondary waste. Worker safety is improved because solution handling operations are fully automated and contained.},
doi = {10.1021/ac950561m},
journal = {Analytical Chemistry},
issn = {0003-2700},
number = 2,
volume = 68,
place = {United States},
year = {1996},
month = {1}
}