Accurate determination of cobalt traces in several biological reference materials
- 1 December 1994
- journal article
- Published by Springer Nature in Biological Trace Element Research
- Vol. 43-45 (1) , 615-625
- https://doi.org/10.1007/bf02917364
Abstract
A newly devised, very accurate (“definitive”) method for the determination of trace amounts of cobalt in biological materials was validated by the analysis of several certified reference materials. The method is based on a combination of neutron activation and selective and quantitative postirradiation isolation of radiocobalt from practically all other radionuclides by ion-exchange and extraction chromatography followed by γ-ray spectrometric measurement. The significance of criteria that should be fulfilled in order to accept a given result as obtained by the “definitive method” is emphasized. In view of the demonstrated very good accuracy of the method, it is suggested that our values for cobalt content in those reference materials in which it was originally not certified (SRM 1570 spinach, SRM 1571 orchard leaves, SRM 1577 bovine liver, and Czechoslovak bovine liver 12-02-01) might be used as provisional certified values.Keywords
This publication has 15 references indexed in Scilit:
- A definitive method for the determination of trace amounts of cobalt in biological materials by neutron activation analysisJournal of Radioanalytical and Nuclear Chemistry, 1994
- Determination of Cd, Mo, Cr and Co in biological materials by RNAAJournal of Radioanalytical and Nuclear Chemistry, 1992
- A definitive method for the determination of small amounts of copper in biological materials by neutron activation analysisJournal of Radioanalytical and Nuclear Chemistry, 1989
- Certification of a second-generation biological reference material (freeze-dried human serum) for trace element determinationsAnalytica Chimica Acta, 1988
- On the role of neutron activation analysis in the certification of a new reference material for trace-element studies, mixed human diet, H-9Journal of Radioanalytical and Nuclear Chemistry, 1988
- BCR reference materials for food and agricultural analysis: an overviewAnalytical and Bioanalytical Chemistry, 1988
- Results of a co-ordinated research programme to improve the certification of IAEA milk powder A-11 and animal muscle H-4 for eleven “difficult” trace elementsAnalytical and Bioanalytical Chemistry, 1987
- Certification of the contents of cadmium, copper, manganese, mercury, lead and zinc in two plant materials of aquatic origin and in olive leavesAnalytical and Bioanalytical Chemistry, 1983
- Elemental concentrations in nbs biological and environmental standard reference materialsAnalytica Chimica Acta, 1980
- Normal levels of trace elements in human blood plasma or serumAnalytica Chimica Acta, 1980