大气光化学

这些污染物发生的特点和规律对北京大气光化学污染的研究和防治具有借鉴意义。

All these were significant to research and prevention of atmospheric photochemistry pollution .

综述了臭氧与大气光化学和气溶胶间的耦合关系，并结合我国实际情况，提出了大气臭氧化学尚待深入开展研究的一些重要科学问题。

The coupling relations of ozone with atmospheric photochemistry and aerosols are reviewed . Moreover , according to real situations in China , some important scientific problems are put forward for the future research on atmospheric ozone chemistry .

大气光化学烟雾反应机理比较（Ⅰ）O3和NOx的比较

A comparison of atmospheric photochemical mechanisms (ⅰ) o_3 and no_x

乙苯与二甲苯比值（E／X）的季节变化特征为：夏季春季秋季冬季，与北京市大气光化学反应活性季节变化趋势一致。

The seasonal variation character of the ratio of ethylbenzene to m , p-xylene ( E / X , summerspringautumnwinter ) was in good accordance with the trend of photochemical reactivity in Beijing .

利用自制光化学烟雾箱进行了一系列表征实验并模拟了乙炔和氮氧化物NOx在室温（20±1）℃下的大气光化学反应。

A series of characteristic experiments were conducted in a self-made photochemical smog chamber , which was used to simulate atmospheric photochemical reactions of acetylene and NO_x under room temperature of ( 20 ± 1 )℃ .

模型的适用范围。碳键机制（CB-IV）模拟大气光化学反应的研究

A Study on Using Carbon Bond Mechanism ( CB-IV ) to Model Atmospheric Photochemical Reaction

应用大气光化学模式研究了日最大臭氧体积分数及其出现时刻与其前体物NMHC、NOx体积分数及NMHC/NOx比值的关系。

The relations of the diurnal peak of photochemical ozone and its occurring time to the ozone precursors ( NMHC , NOx ) and the ratio of NMHC / NOx are researched by using an atmospheric photochemical box model .

同时，它们也参与一些重要的大气光化学反应，如破坏平流层臭氧。

They also participate in some chemical reaction in atmosphere .

用小参数法对大气光化学烟雾污染的数学模式作数值计算

Calculation of the mathematical model for photochemical air pollution using a small parameter method

大气光化学反应研究（Ⅰ）&二氧化硫与1-己烯的光化学反应

An Investigation on the Photochemical Reactions (ⅰ) & The Photochemical Reactions of Sulfur Dioxide and 1-Hexene

一个简化的大气光化学反应模型

A Simplified Photochemical Reaction Mechanism

醛是一类在环境中广泛存在的挥发性污染物，主要来源于汽车尾气、化工、木材加工防腐、吸烟以及大气光化学反应。

Aldehydes are present in exhaust gases during incomplete burning of organic compounds and are also formed by photochemical reaction with hydrocarbons in air .

地壳和大气的光化学过程驱动着元素的形态变化和迁移形成所谓的地球化学循环。

On Earth , tectonics and atmospheric photochemical processes continuously supply substrates and remove products , thereby creating geochemical cycles ( 5,6 ) .

分析说明城市污染大气中光化学反应的生成物与反应物之间存在自抑制过程，在目前的城市群复合污染情况下，气溶胶与臭氧之间的非线性相互作用值得关注。

The results also reveal that there exists self-restraining processes between the reactants and products of photochemical reaction in urban polluted air . It is worth paying attention to the nonlinear interactions between aerosols and ozone in current complex pollution in city cluster .

这表明了大气中参与光化学反应的物质对光化辐射能量的吸收基本上等于云对太阳短波辐射的异常吸收之值。

Cess et al . So , the anomalous absorption of solar radiation by clouds is basically equal to the absorption of solar actinic radiation by the substance with photochemical reactions in the atmosphere .

有关研究表明，氮氧化物排放加剧了大气酸沉降、光化学烟雾和城市灰霾的污染。

The study showed that nitrogen oxide emissions contribute to atmospheric acid deposition , photochemical smog and urban haze pollution .

一个适用于区域性大气环境模拟的大气光化学模式

A photochemical model for regional air quality simulation

黑碳气溶胶是气溶胶的重要组成部分，在大气物理、大气化学、大气光学、大气光化学等过程中具有重要作用。

Black carbon aerosol is an important component of the atmospheric aerosol . It plays significant role in the processes of atmospheric physics , atmospheric chemistry , atmospheric optics , and atmospheric photochemistry .

北京中关村大气O3最大小时浓度不仅逐年递增，而且出现O3最大值的时间也提前，说明大气光化学活性增强；

The ozone peak appears not only earlier , but also is higher year by year at Zhongguancun , Beijing , which phenomenon indicates that the atmospheric photochemical activity is enhanced .