Development and performance evaluation of a GIS-based metric to assess exposure to airborne pollutant emissions from industrial sources

Table 1 Average dioxin (g-TEQ/year) and cadmium (kg/year) release estimates of the sources inventoried for 1996, 2002 and 2008 in France, Lyon, Le Havre and Le Bugey

Areas	1996		2002		2008
Areas	n	mean ± SD	n	mean ± SD	n	mean ± SD
Dioxins
France	918	2.76 ± 8.08	850	0.66 ± 2.64	854	0.08 ± 0.42
Lyon	23	3.08 ± 12.68	24	0.58 ± 1.91	28	0.02 ± 0.03
Le Havre	7	7.07 ± 11.93	8	4.13 ± 11.42	7	0.05 ± 0.05
Le Bugey^a	4	1.63 ± 2.27	4	0.51 ± 0.38	4	0.31 ± 0.22
Cadmium
France	963	24.4 ± 121.1	906	20.7 ± 121.2	909	9.5 ± 51.5
Lyon	23	11.6 ± 31.5	24	6.1 ± 5.7	28	1.1 ± 2.4
Le Havre	7	25.3 ± 25.6	8	11.1 ± 11.5	7	4.7 ± 4.9
Le Bugey^a	4	27.8 ± 41.9	4	15.0 ± 23.4	4	3.5 ± 4.4

n: number of industrial sources; ^aFor the need of the calibration three of the four sources in Le Bugey were virtual; SD: Standard deviation

ISSN: 1476-069X