对流层中CS_2光氧化研究  

STUDIES ON PHOTOOXIDATION OF CARBON DISULFIDE AT TROPOSPHERE

作　　者：张建良[1] 潘循皙[1] 张仁熙[1] 侯惠奇[1] 

机构地区：[1]复旦大学环境科学研究所,上海200433

出　　处：《环境化学》2003年第1期26-31,共6页Environmental Chemistry

基　　金：国家自然科学基金资助项目 (2 98770 0 5)

摘　　要：对 3 1 3nm光照射CS2 O2 ,CS2 空气 (干 )和CS2 空气 (湿 )三种体系的研究结果表明 ,CS2 能吸收 3 1 3nm光子达激发态CS 2 ,CS 2 进一步和O2 作用最终生成COS ,SO2 ,CO等 .从三种体系中CS2 光氧化反应的表观速率常数的比较可见 ,H2 O (g)的存在将增大CS2光氧化速率 .对CS2 在 3 1The photooxidation of CS 2 was studied with the radiation at 313nm with different conditions,including pure oxygen?dry air and wet air matrixes.With the irradiation of 313nm,carbon disulfide can get to electronic excitation state that has the potence to react with oxygen to produce suifur dioxide,carbonyl sulfide and carbon monoxide.By comparing the apparent rate constants of three different systems,it was conclude that water vapor has a significant effect on the photooxidation of CS 2.The mechanism of the reaction has been studied also based on these results.

关 键 词：对流层 CS2 COS 光氧化 大气 酸雨 

分 类 号：X511[环境科学与工程—环境工程]