| 有机气溶胶组分对六氯苯光解的影响 |
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| 引用本文： | 黄俊,杨曦,张祖麟,余刚.有机气溶胶组分对六氯苯光解的影响[J].环境科学,2006,27(12):2392-2395. |
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| 作者姓名： | 黄俊 杨曦 张祖麟 余刚 |
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| 作者单位： | 1. 清华大学环境科学与工程系,北京,100084
2. 南京大学环境学院污染控制与资源化研究国家重点实验室,南京,210093 |
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| 基金项目： | 国家自然科学基金项目(20507010,50578074) |
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| 摘 要： | 以高压汞灯为光源,分别研究了六氯苯在正己烷和邻苯二甲酸二异辛酯(DIOP)为有机气溶胶表层模拟介质时的光解,发现六氯苯在正己烷和DIOP中的光解半衰期分别约为<5 min和5 h,相差70倍以上.研究发现蒽醌和甲氧酚类气溶胶组分对六氯苯的光解具有光敏化作用,其反应机制可能分别为能量转移和抽氢反应.六氯苯光解的主要产物是五氯酚.
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| 关 键 词： | 六氯苯 气溶胶 光解 邻苯二甲酸二异辛酯 |
| 文章编号： | 0250-3301（2006）12-2392-04 |
| 收稿时间： | 2005-12-21 |
| 修稿时间： | 2005-12-212006-02-18 |
Photodegradation of Hexachlorobenzene in the Presence of Known Organic Constituents of Atmospheric Aerosols |
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| Huang Jun,Yang Xi,Zhang Zu-lin,Yu Gang.Photodegradation of Hexachlorobenzene in the Presence of Known Organic Constituents of Atmospheric Aerosols[J].Chinese Journal of Environmental Science,2006,27(12):2392-2395. |
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| Authors: | Huang Jun Yang Xi Zhang Zu-lin Yu Gang |
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| Institution: | 1. Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China; 2. State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China |
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| Abstract: | Hexachlorobenzene photolyzed completely in hexane solvent within several minutes under the radiation of a 500W high pressure mercury lamp,while its photolysis rate in diisooctyl phthalate solvent,which was chosen as a model for the organic phase of atmospheric combustion aerosols,was over 70 times slower.Anthaquinone and methoxyl phenols that known as aerosol constitutes accelerated the photodegradations of hexachlorobenzene though possible energy transfer and hydrogen abstraction mechanisms,respectively.Pentachlorobenzene was the main photoproduct of hexachlorobenzene. |
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| Keywords: | hexachlorobenzene aerosol photodegradation diisooctyl phthalate |
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