Sample code Sampling site Aerodynamic diameter, μm Po yield, % 210Po Pb yield, % 210Pb 210Po/210Pb AP14 Alto Adige ≤ 2.5 100.3 246 ± 15 95.5 707 ± 31 0.348 AP15 Alto Adige ≤ 2.5 86.2 221 ± 13 100 664 ± 29 0.333 AP16 Via Machiavelli ≤ 2.5 100 218 ± 12 100 610 ± 27 0.357 AP17 Via Machiavelli ≤ 2.5 71.9 154 ± 11 100.3 641 ± 28 0.240 AP18 Via delle Sorgenti, Statte ≤ 10 88.5 193 ± 12 95.1 627 ± 27 0.308 AP19 Via delle Sorgenti, Statte ≤ 10 96.9 171 ± 13 91.0 716 ± 31 0.239 AP20 Via delle Sorgenti, Statte ≤ 10 90.8 265 ± 16 100.9 955 ± 41 0.277 Mean ± 1SD Range - - - - 90.7 ± 10.0 71.9-100.3 210 ± 40 154-265 97.5 ± 3.7 91.0-100.9 754 ± 118 610-955 0.300 ± 0.049 0.239-0.357

Table 5: The 210Po and 210Pb activity concentrations in μBq m-3 in atmospheric particulate samples collected at Taranto in 4-9 May 2009 and calculated at the determination time of 24-26 June 2009.

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