Search Results

You are looking at 1 - 5 of 5 items for

  • Author or Editor: H. Jürgensen x
Clear All Modify Search

Abstract  

Using instrumental neutron activation analysis, the variations in the serum levels of Br, Cs, Na, Rb, Se, and Zn were investigated in 18 persons in the normal state. By determining the element levels in relation to changes is the serum water content, information about the binding to the serum protein was obtained. The influence of physiological factors on the serum element levels was investigated. Changes in the concentrations due to variations in the protein/water ratio and in the zinc level as a result of different posture were observed. When standardized sampling procedures were used, the variations in the serum element concentrations during one hour and from day were found to be less than 10%.

Restricted access

Abstract  

For the determination of Ag, Br, Co, Cr, Cs, Fe, Na, Rb, Sb, Se and Zn in biological materials by gamma-spectrometry of long-lived radionuclides after long-time irradiation with thermal neutrons, irradiation vials of high purity silica were used so that the samples could be analysed without the containers being removed. The accuracy and precision of the procedure were tested, using the standard reference material “Bovine Liver” and identical serum samples. In the case of blood serum the method proved to be suitable for the determination of Br, Cs, Fe, Na, Rb, Se and Zn. By analysing samples from several subjects information about element levels in human serum was obtained.

Restricted access
Restricted access