2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/81422Aerosols deposits on filters from ten Romanian towns with different kinds and levels of industrial development have been studied. The concentration of elements with Z~16 have been measured by particle - induced X-ray emission (PIXE) analysis. It has been determined 15 elements: S, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Hg and Pb.Latex manuscript, 7 pages, 1 eps figureNuclear Experimenttext