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

介氧化物、碳氢化合物在成光化学烟中作用和氧、过氧乙酰硝酸酯产生过程,并介光化学烟成机理。

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

羰基化合物既是大气光化学反应产物，又能通过光化学反应生成羧酸、羟基自由基、氧和过氧乙酰硝酸酯。