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Table 4 Seasonal element concentrations (average, min and max levels expressed as ng m -3 ; a: pg m -3 ) in PM 10 determined by INAA and IPAA in atmospheric particulate sampled in outskirt of Rome

From: Deep investigation on inorganic fraction of atmospheric PM in Mediterranean area by neutron and photon activation analysis

Element Summer Winter
  Average Min Max Average Min Max
Ag 0.42 0.2 0.9 0.31 0.1 0.5
Al 3800 200 14000 1800 400 8500
As 2 0.5 9 3 0.2 15
Ba 4 2 8 13 3 57
Br 14 3 51 5 0.4 18
Ca 2400 300 5800 1800 300 2500
Cd 0.9 0.2 4 0.9 0.2 5
Ce 1 0.09 3 0.7 0.1 4
Cl 1300 300 9300 1400 200 5400
Co 0.4 0.05 2.1 0.3 0.04 2.4
Cr 6 1 12 9 1 21
Cs 0.2 0.01 1.9 0.3 0.01 1.6
Eua 0.15 0.02 0.22 0.11 0.02 0.24
Fe 1850 600 4800 1500 350 4100
Hfa 91 21 320 75 11 250
Hg 0.64 0.1 1.6 0.45 0.1 1.5
I 6 2 12 4 3 9
K 930 100 3400 490 50 2800
Laa 12 1 38 7 0.9 25
Mg 1490 100 3500 950 100 1500
Mn 52 12 98 37 10 85
Mo 3.4 0.4 12 2.8 0.2 11
Na 2500 300 9800 1530 200 5200
Ni 5.5 1 19 4 1 15
Pb 42 12 157 54 15 250
Rb 5 1 18 6 1 24
Sb 8 0.5 17 9 0.4 31
Sca 45 14 120 51 12 135
Se 0.7 0.1 1.3 0.6 0.1 1.6
Ta 0.02 0.01 0.09 0.03 0.01 1.1
Tb 0.048 0.009 0.32 0.035 0.005 0.42
Tha 200 22 510 180 19 460
Ti 250 50 930 124 100 630
Tl 1.2 0.3 6 1.7 0.5 9
U 0.3 0.02 0.9 0.2 0.03 0.8
V 15 1 34 21 5 49
Zn 130 25 290 180 40 640
Zr 45 5 75 39 7 61