Trace elements and radioactivity in aerosol particles, produced in the area of Ptolemais (Greece)Trace elements and radioactivity in aerosol particles, produced in the area of Ptolemais (Greece) Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-10-101998enMost of the Greek lignite power plants have been installed in the area of Ptolemais, and a major part of them during the period 1981–1990. Aerosol filters collected in the first and the last years of the decade have been analysed for trace elements as well as for radioactivity (total beta) content. Analysis was performed by radioisotope excited X-ray fluorescence, and 17 elements were determined. A special interest is focused on lead concentrations, an element whose environmental concentrations are regulated by the Greek law; the results for lead were validated by atomic absorption spectrometry. Trace element and radioactivity levels were found significantly lower than the current limit. Enrichment factors and correlation among the analysed elements were also estimated.Δημοσίευση σε επιστημονικό περιοδικόhttp://creativecommons.org/licenses/by/4.0/Journal of Radioanalytical and Nuclear Chemistry227161-65 Kallithrakas-Kontos Nikolaos Καλλιθρακας-Κοντος Νικολαος Zoumi K. Nikolakaki Smaragdi Νικολακακη Σμαραγδη Kritidis P. Kluwer Power plants Ptolemais ē Nea ptolemais nea extinct city ptolemais e nea Aerosol X-ray fluorescence Radioactivity