DOE EML: Sr-04-RC: Strontium-90 in Water Containing Other Radioisotopes by Cerenkov Counting
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Official Method Name
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STRONTIUM-90 IN WATER CONTAINING OTHER RADIOISOTOPES BY CERENKOV COUNTING |
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Current Revision
| EML Procedures Manual HASL-300, Volume 1, 28th Ed.(1997) |
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Media
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WATER |
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Instrumentation
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Liquid Scintillation Counting |
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Method Subcategory
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Radiochemical |
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Method Source
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Citation
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Brief Method Summary
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Yield recovery is determined by adding 30 mg of Sr+2 carrier to the sample or by gamma counting the added Sr-85 tracer. The sample is Cerenkov counted at any two time intervals, t1 and t2, to measure the ingrowth of Y-90 above Cb. Strontium-90 is calculated from the ingrowth of Y-90. This procedure was developed by Jimmy Chang, Institute of Nuclear Energy Research, Taiwan, and was tested at EML using NIST Sr-90/Y-90 reference materials and Sr-90 contained in QAP water samples. It allows for the rapid determination of Sr-90 (beta max = 0.546 MeV) via its progeny, Y-90 (beta max =2.27 MeV) in aqueous solutions by Cerenkov counting (see Procedure Ba-01-R; Scarpitta and Fisenne, 1996). |
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Scope and Application
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The following procedure is used in the EML Quality Assessment Program (QAP; Sanderson and Greenlaw, 1996) for determining Sr-90 in water or gross alpha/beta samples. |
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Applicable Concentration Range
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Beta particles with maximum energies > 0.263 MeV. |
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Interferences
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None given. |
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Quality Control Requirements
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None given. |
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Sample Handling
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None given. |
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Maximum Holding Time
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None given. |
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Relative Cost
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$51 to $200 |
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Sample Preparation Methods
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