Average monthly concentrations of Heavy metals in Suspended particulate matter
Year:
1999
Region:
Stredocesky
District:
Melnik
Institution:
Hygienicka sluzba
Station:
465. Melnik-OHS
Pollutant
Method
Unit
Monthly Concentrations
Annual Mean
1
2
3
4
5
6
7
8
9
10
11
12
Cr
AAS
ng/m^3
1.1
1.0
1.5
1.3
1.4
0.8
0.7
1.8
1.5
1.1
1.2
3.4
1.4
Ni
AAS
ng/m^3
8.8
14.1
11.1
17.3
17.7
20.0
16.0
18.7
29.2
37.7
28.2
72.2
24.5
As
AAS
ng/m^3
9.8
33.5
17.9
5.5
0.9
0.7
1.6
1.1
1.1
4.0
4.4
2.7
6.7
Cd
AAS
ng/m^3
3.0
7.8
3.9
0.4
0.3
0.2
0.3
0.4
0.4
0.3
0.3
0.1
1.4
Pb
AAS
ng/m^3
30.0
20.0
23.5
31.7
30.4
20.6
18.5
22.0
26.6
13.4
20.6
8.5
22.1