BMC Chemistry

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
Eu^a	0.15	0.02	0.22	0.11	0.02	0.24
Fe	1850	600	4800	1500	350	4100
Hf^a	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
La^a	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
Sc^a	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
Th^a	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

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ISSN: 2661-801X

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