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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:31 |
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Conference: Bucharest University Faculty of Physics 2003 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Design of the air quality monitoring network for City of Bucharest (invited lecture)
Authors:
V.Cuculeanu 1, R.Sterrer 2, G.Mocioaca 3, F.Nicodim 4 , C.Rada 4,Corina Rugina 5 I.Breazu 5
Affiliation:
1 Facultatea de Fizica, Universitatea Bucuresti; 2 Agentia Federala de Mediu, Viena, Austria; 3 Consortiul Pro-Air; 4 INMH, Bucuresti; 5 IPM Bucuresti
E-mail
Keywords:
Keywords
Abstract:
This paper summaries the methodology used to design the air quality monitoring in Bucharest in the framework of the PHARE Project " Local Pilot Investment Project in the EPI of Bucharest for Air Quality Monitoring".
The basis of this procedure consists in performing measurement campaigns of key pollutants by diffusive sampling method in different annual seasons .
The aim of the campaign was to check the appropriateness of a proposal for the siting of the fixed monitoring sites in the City of Bucharest.
The results of the campaign, which was based on recommendations issued by the European Commission, largely confirmed the appropriateness of the current proposal for fixed monitoring sites are shown.
The purpose of the measurement campaigns is to assess the spatial distribution of nitrogen dioxide, sulphur dioxide, ozone, benzene and carbon monoxide across the City of Bucharest. As there is no proven diffusive method available for sampling carbon monoxide the Registrul Auto Roman (RAR) was consulted to perform some continuous measurements at one passive sampling location in parallel with the passive measurement of benzene. An empirical relationship was introduced to allow the calculation of carbon monoxide concentrations from benzene measurements and hence estimate the carbon monoxide distribution across the City of Bucharest.
The Federal Environment Agency of Austria in collaboration with the Pro-Air Consortium members conducted two measurement campaigns in summer period and winter period, corresponding to periods of different air pollution levels. It was decided to take a sampling period of 13 days, in order to have a good temporal representativeness; in addition, the accuracy of diffusive sampling measurements is increasing with sampling time. After exposure the diffusive samplers were shipped to Vienna and analysed in the accredited Laboratory of the Federal Environment Agency according to standardised operating procedures. The final results of the passive sampling campaigns are presented as average time-weighted concentration over the actual sampling period.
Iso-concentration lines were calculated by interpolation from the measurements obtained by diffusive sampling. In addition to the passive sampling campaign, air quality modelling was used to determine the spatial distribution of pollutant concentrations during both measurement campaigns in order to have an independent confirmation of the results obtained within the passive sampling measurements. For this purpose the OML Multi model was used for the periods of measurement campaigns.
It is important to note that the passive sampling campaigns were organised with the aim to assess the spatial distribution of key air pollutants and not to assess the concentration levels in relation to the limit and target values set in European Union legislation. For the latter, annual average concentrations need to be assessed in order to enable comparison with those limit values which have an annual averaging period. However, some preliminary conclusions can be drawn from the results. In particular, the measured benzene levels seem to be high in excess of current EC limit values.
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