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首页> 外文期刊>Atmospheric environment >Analysis of NO, NO_2, O_3 and NO_x concentrations measured at a green area of Buenos Aires City during wintertime
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Analysis of NO, NO_2, O_3 and NO_x concentrations measured at a green area of Buenos Aires City during wintertime

机译：在布宜诺斯艾利斯市冬季绿色区域测得的NO，NO_2，O_3和NO_x浓度的分析

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We analyse the air quality data measured at a green area of Buenos Aires City (Argentina) during 38 days in winter. We study the relationships between ambient concentrations of nitric oxide (NO), nitrogen dioxide (NO_2), ozone (O_3) and nitrogen oxides (NO_x = NO + NO_2). The variation of the level of oxidant (OX = O_3 + NO_2) with the NO_x is obtained. It can be seen that the level of OX at a given location is made up of two contributions: one independent and another dependent on the NO_x concentration. The first one can be considered as a regional contribution, equivalent to the background O_3 concentration and the second one as a local contribution that depends on the level of primary pollution. Local oxidant sources may include direct NO_2 emissions, the reaction of NO with O_2 at high-NO_x levels, and the emission of species that promote the conversion of NO to NO_2. The final category of emissions may include the nitrous acid (HONO) that is emitted directly in vehicle exhaust. Finally, we present a diurnal variation of the local as well as regional contributions and the dependence of the last one on wind direction.
机译：我们分析了冬季38天在布宜诺斯艾利斯市（阿根廷）一个绿色区域测得的空气质量数据。我们研究了一氧化氮（NO），二氧化氮（NO_2），臭氧（O_3）和氮氧化物（NO_x = NO + NO_2）的环境浓度之间的关系。获得氧化剂水平（OX = O_3 + NO_2）随NO_x的变化。可以看出，在给定位置的OX含量由两个因素组成：一个因素独立，另一个因素取决于NO_x浓度。第一个可被认为是区域贡献，相当于背景O_3浓度，第二个可被视为取决于主要污染水平的局部贡献。局部氧化剂源可能包括直接的NO_2排放，NO与高NO_x水平下的O_2的反应以及促进NO向NO_2转化的物质的排放。排放的最终类别可能包括直接在车辆排气中排放的亚硝酸（HONO）。最后，我们介绍了本地和区域贡献的日变化，以及最后一个对风向的依赖性。

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