The activity median aerodynamic diameters(AMADs)oflong-lived radon decay product(210Pb, 210Po) in aerosols collected in the Barcelona area(NortheastSpain)during the period from April 2006 toFebruary 2008 arepresented.The 210Po mean AMAD was 420nm, while the 210Pb mean AMAD was 500nm.
The temporal evolution of 210Pb and 210Po AMADs shows maxima in autumn and winter and minima in spring and summer. 210Pb AMAD are being used to estimate the mean-residence time of atmospheric aerosols.
Camacho, A. [et al.]. Activity size distributions for long-lived radon decays products in aerosols collected in Barcelona (Spain). "Applied Radiation and Isotopes", 05 Maig 2009, vol. 67, núm. 5, p. 872-875.