Ultrafine Particles in Urban Air
23 – 24 October 2007
Dresden, Germany
Jiri Novak
Czech Hydrometeorological Institute
Prague, Czech Republic
One of the places selected for the testing of the new
instrument UFP330 for automated monitoring of the number
of particles in various size classes, within the EU Project
UFIPOLNET, is Prague, and namely the ambient air
measuring station (AMS) in Prague, the AMS Strahov
Tunnel station.
Ultrafine Perticles in Urban Air, 23-24 October Dresden
Ultrafine Perticles in Urban Air, 23-24 October Dresden
Ultrafine Perticles in Urban Air, 23-24 October Dresden
Ultrafine Perticles in Urban Air, 23-24 October Dresden
Ultrafine Perticles in Urban Air, 23-24 October Dresden
Ultrafine Perticles in Urban Air, 23-24 October Dresden
Ultrafine Perticles in Urban Air, 23-24 October Dresden
Ultrafine Perticles in Urban Air, 23-24 October Dresden
Ultrafine Perticles in Urban Air, 23-24 October Dresden
Ultrafine Perticles in Urban Air 23-24 October Dresden
Ultrafine Perticles in Urban Air, 23-24 October Dresden
AMS Strahov Tunnel station is not a classical traffic AMS in
accordance with the criteria-requirements of the EU Directives (e.g.
It is not located 4 meters from the centre of thetraffic lane); it is
located above the Strahov Tunnel where air quality is influenced
mainly by the cars leaving the Mrazovka Tunnel and entering the
Strahov Tunnel. This traffic arrea in Prague 5 is a part of the
constructed Prague bypass. As stated above, orography of the area
in the valley in Prague 5 did not enableto locate the AMS strictly in
accordance with EU rules for traffic measuring stations.
Nevertheless the AMS Strahov Tunnel is a good representative of
the impact of traffic on air quality in this enclosed part of Prague 5
and therefore it can be/could be (with tha above reservations) taken
as a traffic measuring station.
Ultrafine Perticles in Urban Air, 23-24 October Dresden
If the basic emmisions from the traffic are NO,NO2, CO and VOC as
gaseous components-pollutants, then particle matter is another
significant pollutant, in case of traffic, mainly fine and ultrafine particles.
Therefore it is useful to monitor and assess the correlations between
these pollutants, in spite of the fact that there are available only short
series of measurements up to now.
To demonstrate the results of the six-month measurements the month
of August and September 2007 were selected.
Table 1
August 2007
Ultrafine Perticles in Urban Air, 23-24 October Dresden
PM1
0
NO
NO2
NOx
CO
O3
SO2
BZN
TLN
EBZN
MPXY OXY
CL0
0.17
0.42
0.33
0.42
0.42
0.12
0.21
0.06
0.19
0.22
0.18
0.18
CL1
0.29
0.65
0.61
0.69
0.65
-0.10
0.11
0.21
0.21
0.44
0.47
0.34
CL2
0.35
0.75
0.74
0.81
0.75
-0.29
0.01
0.31
0.20
0.57
0.67
0.46
CL3
0.38
0.80
0.78
0.86
0.79
-0.32
-0.03
0.33
0.20
0.58
0.71
0.49
CL4
0.44
0.84
0.74
0.88
0.78
-0.18
0.01
0.29
0.18
0.49
0.57
0.42
CL5
0.57
0.36
0.43
0.42
0.44
-0.16
-0.04
0.54
0.26
0.37
0.41
0.33
Table 2
September 2007
Ultrafine Perticles in Urban Air, 23-24 October Dresden
PM1
0
NO
NO2
NOx
CO
O3
SO2
BZN
TLN
EBZN
MPXY OXY
CL0
0.46
0.86
0.77
0.87
0.73
-0.39
0.46
0.64
0.47
0.59
0.58
0.57
CL1
0.53
0.92
0.84
0.93
0.81
-0.39
0.44
0.72
0.53
0.67
0.65
0.64
CL2
0.54
0.92
0.87
0.94
0.84
-0.39
0.42
0.76
0.55
0.71
0.70
0.68
CL3
0.57
0.91
0.88
0.94
0.87
-0.40
0.41
0.80
0.56
0.75
0.73
0.72
CL4
0.62
0.90
0.88
0.93
0.86
-0.34
0.42
0.80
0.53
0.74
0.73
0.72
CL5
0.61
0.71
0.68
0.73
0.74
-0.46
0.33
0.78
0.49
0.72
0.71
0.67
Ultrafine Perticles in Urban Air, 23-24 October Dresden
The first results show none of the size fraction of the ultrafine particles
correlate with PM10, as we know from the literature.On the contrary,
there is a significant correlation with NO, NO2 and CO in September
2007 for CL1-CL4, i.e. for the ultrafine particles with the size from
20 nanometers (nm) to 200 nm.
Interesing correlation are with BZN (and similar with EBZN and
Xylenes); in September the correlation was very high, and similar with
NO, NO2 and CO, but in August there was not found such a significant
correlation for the classes of ultrfine particles CL1-CL4.
To highlight the course of concentrations and number of ultrafine
particles we chose one class of ultrafine particles – CL3.
CL3 - NO
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
day
p/ccm
0
50
100
150
200
250
300
ug/m3
CL3
NO
Ultrafine Perticles in Urban Air, 23-24 October Dresden
CL3 - NO2
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
day
p/ccm
0
20
40
60
80
100
120
140
160
ug/m3
CL3
NO2
Ultrafine Perticles in Urban Air, 23-24 October Dresden
CL3 - PM10
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
day
p/ccm
0
20
40
60
80
100
120
140
ug/m3
CL3
PM10
Ultrafine Perticles in Urban Air, 23-24 October Dresden
CL3 - CO
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
day
p/ccm
-200
0
200
400
600
800
1000
1200
1400
1600
1800
ug/m3
CL3
CO
Ultrafine Perticles in Urban Air, 23-24 October Dresden
Ultrafine Perticles in Urban Air, 23-24 October Dresden
The figures show quite clearly the relation between the number of
ultrafine particles with gaseous pollutants of traffic emissions, from
which the ultrafine particles are formatted through physical-chemical
processes. It is evident that these primary measuremnts are regarded
as test measurements, but we hope that we will be able to assess the
measured data from the year 2008 not only for gaseous pollutants from
the traffic but also in connection with meteorological conditions of the
respective days (T,P,RH), the hours of measurements etc.
It will be surely be useful to carry out study measuments of the contents
of EC/OC at this AMS station which we prepare for the year 2008.
Ultrafine Perticles in Urban Air, 23-24 October Dresden
Thank you for your attention
