My first Publication 1926874721_Alumni_Magazine_June_2010 | 页面 11

Issue 3, June 2010
Graph 1: Showing the average ozone level in all of the neighborhoods in µg/m 3
(calculated by adding all the measured levels of ozone in the different days and divided
by 3):
to a park than it was in Reduta, showed
lower ozone pollution for Geo Milev.
For my next research I would conduct this
experiment in different seasons to see if
there is a change in the level of ozone on
the surface of the Earth during different
seasons. I would additionally like to see
if the ozone level changes when raining,
snowing, or during extremely cold/hot
weather. To improve my investigation
next time I would include even more
different neighborhoods of Sofia in my
research as well as experiments indoors
and outdoors.
Please contact Natalia Manolova,
ACS Alumni Magazine Editor
([e-mail]), for the full
text of the project including works
cited.
Map 1: Showing all the places strips were put in Sofia:
Relatively, ozone level is highest during working days. It decreases during weekends and
it drops significantly during nights. The highest level of ozone was seen in Darvenitza
– with average equal to150µg/m 3 , while the lowest air pollution level was in the ACS
campus (68.3 µg/m 3 ). In all other neighborhoods the average ozone level was between
108.3 and 130 µg/m 3 . There is a trend showing that going down to the centre of Sofia –
the ozone pollution increases, however, centre areas closer to parks such as Geo Milev
– have lower level of ozone than those farther of parks such as Reduta.
The limits given by the Bulgarian Ministry of Environment and Water, were exceeded
everywhere except on ACS campus. According to Table 1, the level of ozone in all parts
of Sofia is unhealthy for children and people in the sensitive group, causing respiratory
diseases to all citizens of the capital. My hypothesis was thus proven right. I expected
that ACS campus will be less polluted than other places because of its location (near
Vitosha Mountain) and results show exactly that. And because urbanized areas are
more polluted than those next to parks the measurement in Geo Milev, made closer
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