Temperature dependence of the dielectric properties of blood
Bielińska, I.; Terlecki, J.
Folia Histochemica et Cytobiologica 23(1-2): 33-42
1985
ISSN/ISBN: 0239-8508 PMID: 4043438 Document Number: 258927
The aim of the work was to investigate the temperature effect in physiological range on the dielectric properties of a fish (Cyprinus carpio) blood. By applying an empirical non-damaging method and statistical analysis of the dielectric data, it is observed that a heating of carp blood induces an almost linear value variation of the electrical conductivity and permittivity of the intracellular matter of carp red blood cells. The dielectric data, however, reveal anomalous behaviour for conductivity and permittivity of the interior of carp erythrocytes at 23.degree. C and 23.degree., 37.degree. C, respectively and for both volume fraction and dielectric loss factor tg.delta. at 30.degree., 35.degree., 37.degree. C. For the presented dielectric parameters the temperature coefficient and the Arrhenius activation energy were estimated. Moreover, this work led to conclusion that the changes of the volume fraction of carp erythrocytes induce corresponding variations of the maximum of the dielectric loss factor tg.delta. determined for whole blood.