Authors: Magdalena Długosz Paweł Grabowski Henryk Bem
Publish Date: 2009/12/03
Volume: 283, Issue: 3, Pages: 719-725
Abstract
The concentration of two important radionuclides 210Pb and its decay product 210Po in the urban air in the center of the Polish city of Lodz were measured during the winter and spring seasons of 2008–2009 Urban airborne particulate matter was collected using two methods an Anderson 9stage impactor and a highvolume aerosol sampler type ASS500 working in the frames of the aerosol sampling network in Poland established for radionuclide monitoring Average concentrations for 10 months sampling period for 210Pb and 210Po were 0556 and 0067 mBq/m3 respectively However remarkable fluctuations due to meteorological condition were observed from 0010 to 0431 mBq/m3 for 210Po and from 0167 to 1847 mBq/m3 for 210Pb The highest concentrations almost 60 of the total activities of both radionuclides were found in the first two fine aerosol fractions with particle diameters below 036 μm The aerosol residence times calculated from the 210Po/210Pb ratio ranged from 7 to 120 days
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