1. Predrag Kolarž, Institute of Physics, University of Belgrade, Serbia
2. Zdenka Stojanovska, Faculty of Medical Sciences, Goce Delčev University Stip, Macedonia
3. Zoran Ćurguz, Saobraćajni fakultet Doboj, Republic of Srpska, Bosnia and Herzegovina
4. Zora Zunić, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
The most abundant and efficient source of air ionization in the lower layer of the atmosphere is radon. As an alpha emitter, radon plays cruciant role in the earth atmospheric electricity. Besides physical, radon and ions have a significant biological role concerning human health: radon is health hazard while the ions are beneficial ingredient of the air we breathe. Measurements were made using continual radon monitor Rad-7 and air ion counter CDI-06. Diurnal and spatial variations of both atmospheric constitutens are mutually related and dependant mostly on radon exhalation potential, meterological parameters, aerosol concentration and formation of temperature inversion layer. Indoor concentrations are related to radon accumulation and partiallz influenced by external radon concentration.