They are formed byatmospheric photochemistry reaction, and could product OH radical, alkyl radical, ozone,carboxylic acid peroxyacetyl nitrates by atmospheric photochemistry reaction.

羰化合既是大气光化学反，又能通过光化学反生成羧酸、羟自由、和过乙酰硝酸酯。

The function of hydrocarbons and nitrogen oxides in photochemical smog formation and the formative process of ozone and peroxyacetyl nitrate are discussed.

介绍了氮化、碳氢化合在形成光化学烟雾中作用和、过乙酰硝酸酯生过程,并介绍了光化学烟雾形成机理。