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

氮氧物、碳物在形成光学烟雾中的作用和氧、过氧乙酰硝酸酯产生的过程,并光学烟雾的形成机理。

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

羰基物既是大气光学反应的产物，又能通过光学反应生成羧酸、羟基自由基、氧和过氧乙酰硝酸酯。