Abstract
The activity size distributions of cosmogenic 7Be and the longer living radon progenies 210Pb and 210Po in urban aerosols were measured for summers and winters from, 2014 to the end of 2017. The average seasonal activity median aerosol diameters (AMADs) and mass median aerosol diameters (MMADs) calculated for summer ranged from 0.329 μm to 0.733 μm and were ordered AMADBe-7, <AMADPb-210,<AMADPo-210,<MMAD, whereas for winter, these values were from 0.420 μm to 0.538 μm but were differently ordered:AMADPo-210,<AMADBe-7,<AMADPb-210,<MMAD. The prevailing occurrence of 210Po in particles of the smallest diameter during winter can be explained by the remarkable additional anthropogenic emission of this radionuclide from coal combustion. This was confirmed with principal component analysis (PCA) of the AMAD data.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
