|
|
| Compound |
1996 concentration |
1992 concentration (25 samples) |
1996 to 1992 ratio* |
|
|
| Benzo(bjk)fluoranthenes (ng/m3) |
6.5 ± 1.4 |
10 ± 5 |
0.63 |
| Benzo(a)pyrene (ng/m3) |
2.2 ± 0.6 |
6 ± 3 |
0.35 |
| Benzo(e)pyrene (ng/m3) |
3.1 ± 0.7 |
5.5 ± 1.7 |
0.56 |
| Benzo(ghi)perylene (ng/m3) |
5.1 ± 1.1 |
11 ± 3 |
0.48 |
| Coronene (ng/m3) |
3.8 ± 1.0 |
8 ± 3 |
0.47 |
| DieselBeP (ng/m3) |
1.4 ± 0.4 |
3.0 ± 0.9 |
0.46 |
| S (µg/m3) |
2.9 ± 0.9 |
2.7 ± 0.4 |
1.07 |
| K (µg/m3) |
0.44 ± 0.10 |
0.32 ± 0.05 |
1.40 |
| V (ng/m3) |
12 ± 4 |
12 ± 3 |
1.04 |
| Mn (µg/m3) |
0.13 ± 0.04 |
0.042 ± 0.009 |
2.79 |
| Ni (ng/m3) |
6.3 ± 1.2 |
6.2 ± 1.2 |
1.02 |
| Zn (µg/m3) |
0.16 ± 0.03 |
0.11 ± 0.02 |
1.38 |
| Br (ng/m3) |
6.1 ± 1.0 |
47 ± 9 |
0.13 |
| Pb (ng/m3) |
34 ± 5 |
228 ± 40 |
0.15 |
| Cu (ng/m3) |
80 ± 11 |
55 ± 9 |
1.44 |
| TA98+S9 (rev./m3) |
48 ± 41 |
72 ± 38 |
0.67 |
| TA98-S9 (rev./m3) |
34 ± 28 |
51 ± 27 |
0.67 |
| TA98NR (rev./m3) |
15 ± 12 |
38 ± 21 |
0.40 |
| Risø wind-rate (m/s) |
5.7 ± 1.6 |
5.1 ± 0.9 |
|
| Risø temperature (°C) |
4 ± 4 |
2.9 ± 1.1 |
|
| No. of samples |
16 |
25 |
|
|
|
* average ratio of 7 PAH (BbjkF, BaP, BeP, BghiP and Cor) 0.50 ± 0.09,
average ratio of 3 mutagenicity tests 0.58 ± 0.18 and average ratio of 6 reference
components (S, K, V, Ni, Zn and Cu) 1.22 ± 0.16. Both PAH and mutagenicity average ratio
was significant lower than that of the 6 inorganic reference components (t-test, p<
0.001). |