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SEASONAL DISTRIBUTION OF GROUND-LEVEL OZONE AND ITS PRECURSORS IN PLOIESTI,ROMANIA

Stefania Iordache, Cornel Ianache, Laurentiu Predescu, Mirela Predescu, Dumitru Dumitru

First published: 2017-06-20https://doi.org/10.5593/sgem2017/41/s19.071View metrics

Abstract

Air pollution became a real public concern for countries all over the world. Increasing anthropogenic emissions of nitrogen oxides (NOx) can cause a substantial increase in ground-level ozone, which is a secondary air pollutant produced by photochemical interaction of NOx and volatile organic compounds (VOCs), through a complex set of reactions under the influence of solar radiation. Ploiesti is one of the main cities in Romania, which is facing with anthropogenic atmospheric emissions that result especially from its petrochemical industries, vehicular emissions or various combustion processes (e.g. residential heating, power plants, fossil fuel). This study aimed to investigate distribution characteristics of ground level ozone (O3) in relationship with its precursors (nitrogen dioxide (NO2), nitrogen monoxide (NO), and nitrogen oxides (NOx)) using statistical analysis methods. Data analyzed consisted in hourly O3 and NOx measurements that were collected from January to September 2016 at an urban station that belong to the Romanian National Network for Air Quality Monitoring (RNMCA). It was also investigated seasonal variations of O3 and its precursors and their weekly variations in order to observe the presence of the пїЅozone weekend effectпїЅ. The results showed that the highest ozone concentration in Ploiesti was observed in summer period. Seasonal variations of O3 concentrations have followed the order of summer > spring > winter, while the pattern of seasonal variation for its precursors (NO, NO2, and NOx) was in opposite with that of ozone concentrations.

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Title
SEASONAL DISTRIBUTION OF GROUND-LEVEL OZONE AND ITS PRECURSORS IN PLOIESTI,ROMANIA
Authors
Stefania Iordache, Cornel Ianache, Laurentiu Predescu, Mirela Predescu, Dumitru Dumitru
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies
Publisher
STEF92 Technology
Year
2017
Pages
559-566
SWS Citekey
Iordache201719559566
ISSN
1314-2704
ISBN
978-619-7408-06-5
Language
en
Publication type
Conference Paper
Keywords
ground-level ozoneNOxtime series analysisurban site
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