Isoprene Emissions and Ozone Formation in Urban Conditions: A Case Study in the City of Rio de Janeiro

被引：14

作者：

da Silva, Cleyton Martins ^{[1
,2
]}

Correa, Sergio Machado ^{[3
]}

Arbilla, Graciela ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Ilha Fundao, Inst Quim, Ctr Tecnol, Bloco A,Sala 402A,Cidade Univ, Rio De Janeiro, RJ, Brazil

[2] Univ Veiga Almeida, Campus Maracana, Rio De Janeiro, RJ, Brazil

[3] Univ Estado Rio de Janeiro, Fac Tecnol, Resende, RJ, Brazil

来源：

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY | 2018年 / 100卷 / 01期

关键词：

Isoprene; Biogenic volatile organic compounds; Ozone; Reactivity; VOLATILE ORGANIC-COMPOUNDS; COMPOUNDS VOC; CHINA; CHEMISTRY;

D O I：

10.1007/s00128-017-2248-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The potential role of isoprene oxidative processes, as well as the possible impact of air pollution on isoprene emissions, are more important in tropical cities, surrounded by rainforests. In this study, the contribution of isoprene to ozone formation was determined considering different scenarios, mainly volatile organic compounds/NO (x) (VOC/NO (x) ) ratios, and typical atmospheric conditions for the city of Rio de Janeiro, where more than 36% of the urbanized area is covered by vegetation. Ozone isopleths and incremental reactivity coefficients (IR) were evaluated to understand the direct contribution of isoprene to ground-level ozone formation and the negative impact of anthropogenic NO (x) emissions on the natural atmospheric balance. Although isoprene accounted for only 2.7% of the total VOC mass, excluding the isoprene concentration from the model reduced the maximum ozone value by 14.1%. The calculated IR coefficient (grams of O-3 formed per gram of added isoprene) was 2.2 for a VOC/NO (x) ratio of 8.86.

引用

页码：184 / 188

页数：5

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