Determination of 41Ca in biological-shield concrete by low-energy X-ray spectrometry
An X-ray spectrometric method has been developed for the determination of 41Ca in the biological-shield concrete of nuclear reactors. The concrete sample was first decomposed with nitric, hydrofluoric, and perchloric acids. Calcium was then separated from other radionuclides by ion-exchange chromato...
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| Published in | Analytical and bioanalytical chemistry Vol. 372; no. 4; pp. 532 - 536 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
Germany
01.02.2002
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| Online Access | Get full text |
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| Summary: | An X-ray spectrometric method has been developed for the determination of 41Ca in the biological-shield concrete of nuclear reactors. The concrete sample was first decomposed with nitric, hydrofluoric, and perchloric acids. Calcium was then separated from other radionuclides by ion-exchange chromatography and recovered as an oxalate precipitate. X-rays at 3.3 keV from 41Ca in the calcium oxalate pellet were measured. The detection efficiency of the X-ray measurement at 3.3 keV was calculated from those obtained by measuring 55Fe standard pellets at 5.9 keV using mass-absorption coefficients of the calcium oxalate pellet at each X-ray energy. A lower limit of determination of 8 Bq g(-1) was obtained for a sample weight of 1 g. |
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| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 1618-2642 1618-2650 |
| DOI: | 10.1007/s00216-001-1222-6 |