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Table 6.7 Atmospheric concentrations of selected pollutants* recorded at Air Quality Monitoring Stations
|
Air Quality monitoring station1 |
1989 |
1990 |
1991 |
1992 |
1993 |
1994 |
1995 |
1996 |
1997 |
1998 |
1999 |
|
micrograms per cubic metre | |||||||||||
|
Benzene2 | |||||||||||
|
Edinburgh Med school |
.. |
.. |
.. |
.. |
.. |
2.3 |
2.3 |
2.6 |
2.3 |
2.0 |
2.0 |
|
milligrams per cubic metre | |||||||||||
|
Carbon monoxide3 | |||||||||||
|
Edinburgh Centre |
.. |
.. |
.. |
4.3 |
5.6 |
4.1 |
3.7 |
4.3 |
2.9 |
3.5 |
1.7 |
|
Glasgow City Chambers |
16.7 |
13.5 |
14.5 |
10.1 |
7.0 |
6.3 |
5.5 |
4.4 |
7.9 |
3.5 |
4.2 |
|
nanograms per cubic metre | |||||||||||
|
Lead4 | |||||||||||
|
Eskdalemuir |
13 |
10 |
13 |
10 |
7 |
6 |
5 |
10 |
10 |
8 |
7 |
|
Glasgow |
140 |
95 |
92 |
93 |
90 |
39 |
51 |
52 |
44 |
29 |
20 |
|
Motherwell |
.. |
200 |
160 |
50 |
86 |
23 |
50 |
30 |
45 |
18 |
16 |
|
Nitrogen dioxide5 | |||||||||||
|
micrograms per cubic metre | |||||||||||
|
Edinburgh Centre |
.. |
.. |
.. |
53 |
51 |
51 |
50 |
47 |
49 |
47 |
42 |
|
Glasgow City Chambers |
51 |
49 |
50 |
49 |
51 |
49 |
50 |
52 |
50 |
52 |
51 |
|
Strath Vaich |
.. |
1.8 |
3.5 |
1.3 |
1.9 |
2.0 |
0.9 |
1.4 |
1.0 |
.. |
.. |
|
micrograms per cubic metre | |||||||||||
|
Ozone6 | |||||||||||
|
Edinburgh Centre |
.. |
.. |
.. |
17 |
26 |
30 |
31 |
32 |
29 |
32 |
35 |
|
Eskdalemuir |
56 |
55 |
53 |
53 |
50 |
55 |
55 |
52 |
51 |
55 |
56 |
|
Strath Vaich |
65 |
66 |
65 |
69 |
68 |
73 |
67 |
68 |
64 |
71 |
74 |
|
days exceeding 100ug/m3 | |||||||||||
|
Edinburgh Centre |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
3 |
1 |
0 |
2 |
|
Eskdalemuir |
19 |
27 |
16 |
28 |
8 |
13 |
24 |
10 |
17 |
6 |
17 |
|
Strath Vaich |
9 |
25 |
34 |
25 |
11 |
25 |
21 |
11 |
12 |
10 |
26 |
|
micrograms per cubic metre | |||||||||||
|
Particulates (PM10)7 | |||||||||||
|
Edinburgh Centre |
.. |
.. |
.. |
29 |
29 |
26 |
27 |
25 |
24 |
20 |
19 |
|
Glasgow Centre |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
28 |
27 |
26 |
23 |
(1) The sites in Glasgow, Edinburgh and Motherwell are urban monitoring sites,
Eskdalemuir and Strath Vaich are rural sites.
(2) Maximum running annual mean concentation of Benzene.
(3) Maximum annual eight hour running mean.
(4) Annual average concentrations of atmospheric lead.
(5) Annual mean concentration of atmospheric nitrogen dioxide.
(6) Annual mean ground level ozone concentration.
(7) Annual mean atmospheric PM10 concentration.
* those to which transport is understood to contribute significantly - see text.
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