摘要
本文研究了在253.7nm的紫外光照条件下,CH_3Br,CH_2Br_2以及CH_3Br+O_2/O_3和CH_2BR_3+O_2/O_3等体系的光化学反应过程,通过FTIR以及UV-Vis对产物进行了分析.并提出反应机理予以解释.在此基础上测定了溴甲烷存在条件下的臭氧紫外光解损耗的状况,对得到的光化学反应初期臭氧浓度的变化及由此算出的臭氧损耗的量子产额提出了相应的动力学模型进行解释.
Photochemical reactions of CH3Br, CH2Br2, CH3Br + O2/O3 and CH2Br2 + O2/O3 systems under the irradiation of 253.7nm is studied. The products are analysed by FTIR. and UV-Vis and reasonable mechanisms provided to explain the facts. Ozone photolysis in the presence of bro-momethane if further studied and relevant reaction model is raised to meet the result.
出处
《环境化学》
CAS
CSCD
北大核心
2000年第1期18-25,共8页
Environmental Chemistry