Geraldino Claudio Gabriel Pinheiro, Martins Eduardo Monteiro, da Silva Cleyton Martins, Arbilla Graciela
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.
Bull Environ Contam Toxicol. 2017 May;98(5):632-637. doi: 10.1007/s00128-017-2041-6. Epub 2017 Feb 18.
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. 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/NO ratios corresponded to a VOC-limited process.
本研究调查了里约热内卢市臭氧水平最关键的地区之一班古频繁出现高浓度臭氧以及臭氧事件的潜在因素。在两年期间的74天（占10.3%）里，国家空气质量标准被超过。在同一时期，共有378天（占51.8%）的臭氧浓度在80至160微克/立方米之间。对污染物浓度和气象数据进行的统计分析以及对挥发性有机化合物（VOC）反应活性的动力学和机理分析表明，高臭氧浓度似乎与本地排放没有密切关系，而是与污染物传输有关，并由光化学活动引发。该地区南部和北部的山脉导致地表温度升高和污染物积累。VOC/NO比值对应于一个VOC受限过程。
