研究论文
钟晋贤,杨文襄,牟玉静,张德强,刘晔,陈大舟.OH自由基引发光氧化氟氯碳化合物的研究[J].环境科学学报,1996,16(1):74-81
OH自由基引发光氧化氟氯碳化合物的研究
- OH RADICALS INITIATION AND PHOTOOXIDATION STUDIES OF CHLOROFLUOROCARBONS
- 基金项目：国家自然科学基金
- 作者
- 单位
- 钟晋贤
- 中国科学院生态环境研究中心,北京 100085
- 杨文襄
- 中国科学院生态环境研究中心,北京 100085
- 牟玉静
- 中国科学院生态环境研究中心,北京 100085
- 张德强
- 中国科学院生态环境研究中心,北京 100085
- 刘晔
- 中国科学院生态环境研究中心,北京 100085
- 陈大舟
- 中国标准物质研究中心
- 摘要：研究了CFC-11+H2O2,CFC-11+H2O2+O2,CFC-12+H2O2和CFC-12+H2O2+O24个体系的光化学反应。这些体系在低压汞灯照射下,H2O2产生了OH自由基。OH自由基能引发CFC的光氧化反应,其产物在20m长的光程池中用富里叶红外光谱仪测量,发现在CFC-11+H2O2和CFC-11+H2O2+O2体系中有COFCl,CO2和HCl,而在CFC-12+H2O2和CFC-12+H2O2+O2体系中,其产物为COF2,CO2和HF,从这些产物,推出其可能的光解机理,并作一个合理解释。
- Abstract：The photooxidation in four systems of CFC-11+H2O2,CFC-11+H2O2+O2, CFC-12 +H2O2, and CFC-12+H2O2 +O2 were studied. H2O2 was irradiated by a low pressure mercury lamp and OH radicals were produced. The OH radicals can induce photooxidation of CFCs. The products of photooxidation were determined by a Fourier Transform Infrared Spectroscopy with a 20 m optical path cell.The products were COFCI, CO2 and HCI for CFC-l-11+H2O2 and CFC-11+H2O2+O2 systems.COF2,CO,and HF for CFC-12+H2O2 and CFC-12+H2O2+O2 systems.Based on those results,the mechanism of photooxidation was suggested.
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