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An accurate procedure for multielement neutron activation analysis of trace elements in biological materials

Research paper by T. E. Henzler, R. J. Korda, P. A. Helmke, M. R. Anderson, M. M. Jimenez, L. A. Haskin

Indexed on: 01 Sep '74Published on: 01 Sep '74Published in: Journal of Radioanalytical and Nuclear Chemistry



Abstract

A procedure for radiochemical neutron activation analysis of biological materials for As, Cd, Co, Cu, Ga, Hf, Mg, Mn, Na, Sb, Sc, Se, Zn, and the rare-earth elements (REE) has been developed. Maximum control over accuracy has been emphasized. Samples are digested under reflux in the presence of carrier for every element determined, and a chemical yield is measured for every element assayed. The procedure has been tested by replicate analysis of National Bureau of Standards bovine liver sample (SRM-1577). Values agree to within their uncertainties with those given by NBS for the 9 elements of this group that they have analyzed. Accuracies at the 90% confidence level for elements in the liver sample are estimated as better than ±10% for Cu, Na, and Zn, between ±10 and ±25% for As, Co, Hg, La, Mn, and Se, and between ±25 and ±50% for Cd, Sb, Sc, and Sm.