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UP: Umweltphysik
UP 19: Neuartige Messverfahren der Umweltphysik
UP 19.4: Fachvortrag
Tuesday, March 14, 2006, 17:15–17:30, A
Nuclear approach to environmental monitoring — •Anwar Chaudhri1 and Nasir Chaudhri2 — 1Inst. of Medical Physics, Klinikum-Nuernberg & PCSIR, Lahore, Pakistan — 2Pakistan Council of Scientific & Industrial Research, Lahore, Pakistan
A novel approach has been selected to study the effects of French Atomic Tests series of 1974 on the Australian atmosphere. This is to investigate the changes in the elemental concentrations of the atmospheric particulates collected in Australia just before and after the onset of the atomic tests in the Pacific. The atmospheric particulates were collected on Polystyrene filters in high volume air samplers placed all along the Australian East Coast at locations in Port Moresby (New Guinea), Townsville, Brisbane, Sydney, Melbourne and Hobart. The elemental concentrations in the filters were measured by using the technique of charged particle activation analysis. A number of elements, such as S, Ca, Ti, Cr, Fe, Ni, Cu, Zn, Se and Hg ranging in concentrations from 0.001- 3.27 micrograms / cubic metre, were detected. The changes observed in the concentrations of these elements in the two sets of samples, taken just before and just after the Atomic Tests, are attributed to synoptic rather than Nuclear Fall-Out effects.