UNIVERSITY OF MALTA

PETROL LEAD IN A SMALL ISLAND ENVIRONMENT Table 2
Dust lead levels by region categorization

Street dust
ug Pb/g House dust
ug Pb/g Dust deposition
ug Pb/m²/day

urban (n = 8)
suburban (n = 18)
rural (n = 15) 1473 ± 1115
482 ± 455
188 ± 235 1783 ± 1827
674 ± 839
226 ± 166 35.6 ± 28.1
11.5 ± 6.0
6.3 ± 4.9

significance
   urban vs. suburban
   urban vs. rural
   suburban vs. rural
p < 0.05 sig
p < 0.001 sig
p < 0.05 sig
p > 0.1 ns
p < 0.05 sig
p < 0.05 sig

p < 0.05 sig
p < 0.01 sig
p < 0.01 sig

	Street dust ug Pb/g	House dust ug Pb/g	Dust deposition ug Pb/m²/day
urban (n = 8) suburban (n = 18) rural (n = 15)	1473 ± 1115 482 ± 455 188 ± 235	1783 ± 1827 674 ± 839 226 ± 166	35.6 ± 28.1 11.5 ± 6.0 6.3 ± 4.9
significance urban vs. suburban urban vs. rural suburban vs. rural	p < 0.05 sig p < 0.001 sig p < 0.05 sig	p > 0.1 ns p < 0.05 sig p < 0.05 sig	p < 0.05 sig p < 0.01 sig p < 0.01 sig