title: An Analytical Investigation of Ozone Episodes in Bangu, Rio de Janeiro.
abstract: This study investigated the potential factors that contribute to frequent high levels of ozone as well as ozone episodes in Bangu, one of the most critical areas in the city of Rio de Janeiro regarding ozone levels. For 74 days in a two-year period (10.3%), the national air quality standard was exceeded. For the same period, a total of 378 days (51.8%) had ozone concentrations that were between 80 and 160 µg m-3. A statistical analysis of pollutant concentrations and meteorological data as well as a kinetic and mechanistic analysis of VOC reactivity showed that the high ozone concentrations did not seem to be closely related to local emissions but, rather, were related to pollutant transport and triggered by photochemical activity. The mountains in the southern and northern part of the district contribute to the increase of surface temperatures and the accumulation of pollutants. The VOC/NOxratios corresponded to a VOC-limited process.
authors.affiliation: Instituto de Química, Universidade do Estado do Rio de Janeiro, Campus de Maracanã, Rio de Janeiro, RJ, Brazil.
authors.forename: Claudio Gabriel Pinheiro
authors.initials: CG
authors.lastname: Geraldino
authors.affiliation: Instituto de Química, Universidade do Estado do Rio de Janeiro, Campus de Maracanã, Rio de Janeiro, RJ, Brazil.|Departamento de Engenharia Sanitária e do Meio Ambiente, Faculdade de Engenharia, Universidade do Estado do Rio de Janeiro, Campus de Maracanã, Rio de Janeiro, RJ, Brazil.
authors.forename: Eduardo Monteiro
authors.initials: EM
authors.lastname: Martins
authors.affiliation: Instituto de Química, Centro de Tecnologia, Universidade Federal do Rio de Janeiro, Bloco A, Sala 402A, Cidade Universitária, Ilha do Fundão, Rio de Janeiro, RJ, 21949-900, Brazil.|Universidade Veiga de Almeida, Campus de Maracanã, Rio de Janeiro, RJ, Brazil.
authors.forename: Cleyton Martins
authors.initials: CM
authors.lastname: da Silva
authors.affiliation: Instituto de Química, Centro de Tecnologia, Universidade Federal do Rio de Janeiro, Bloco A, Sala 402A, Cidade Universitária, Ilha do Fundão, Rio de Janeiro, RJ, 21949-900, Brazil. gracielaiq@gmail.com.
authors.forename: Graciela
authors.identifier: http://orcid.org/0000-0001-7732-8336
authors.initials: G
authors.lastname: Arbilla
mesh_terms: D000393:Air Pollutants / Q000032:analysis; D001272:Atmosphere / Q000737:chemistry*; D001938:Brazil; D004784:Environmental Monitoring; D009589:Nitrogen Oxides; D010126:Ozone / Q000032:analysis*; D055549:Volatile Organic Compounds / Q000032:analysis
chemical_list: D000393:Air Pollutants; D009589:Nitrogen Oxides; D055549:Volatile Organic Compounds; D010126:Ozone
keywords: Meteorological parameters; Ozone episodes; VOC/NOx ratios; Volatile organic compounds