Episodes of extremely high concentrations of tropospheric ozone in the urban environment in Bor - Serbia

• Published in: Atmospheric environment (1994) Vol. 45; no. 32; pp. 5716 - 5724
• Main Authors: ARSIC, Milica, NIKOLIC, Djordje, DJORDJEVIC, Predrag, MIHAJLOVIC, Ivan, ZIVKOVIC, Zivan
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01-10-2011; Elsevier
• Subjects: Applied sciences; atmospheric chemistry; Atmospheric pollution; Episodes of ozone concentrations; Exact sciences and technology; Extreme values; Health; Human; human health; Morning; nitrogen oxides; NOx; Ozone; Photochemical smog; Pollution; Thresholds; Towns; troposphere; Tropospheric ozone; Urban air quality; urban areas; Urban environment; Vegetation; work schedules; Serbia; Europe; Urban air quality; Tropospheric ozone; Urban environment; Photochemical smog; NOx; Episodes of ozone concentrations; Nitrogen oxide; Photochemical oxidants; Sensitivity analysis; Troposphere; Nitrogen compounds; Ozone; Air quality; Urban area; Concentration measurement; Health and environment; Smog; Vegetation; Public health
• ISSN: 1352-2310; 1873-2844
• DOI: 10.1016/j.atmosenv.2011.07.024

This paper presents results of measuring episodes of extremely high ozone concentrations in urban area of the town of Bor in Serbia. The measured ozone concentration of 3000 μgm−3 in two episodes, which lasted 3–5 days in November 2010, has not been recorded in the literature in this field. Sensitivity of generated ozone to the NOx was determined, since the concentrations of NOx in the same period were also high. In the morning when working hours start, episodes of increased NOx concentrations appear after several hours, leading to episodes of increased ozone concentrations reaching up to twenty times more than the threshold value, defined as harmful to vegetation and human health.
► In this study we investigated very high episodes of the ground-level ozone. ► We examined impact of the primary pollutants on the ozone formation. ► Influence of the metorological paramethers on the ground-level ozone was analyzed. ► Measured mean hourly values of ozone varied in a large interval (7.38–3213 μgm−3). ► Strong NOx sensitivity of the generated ozone, above 120 μgm−3, has been proposed.