| The study for polyaromatic hydrocarbons decay on Chinese coal soot particles in atmosphere |
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| 引用本文： | Shu Yonghui,Li Jinhu,Wang Wenxing. The study for polyaromatic hydrocarbons decay on Chinese coal soot particles in atmosphere[J]. 环境科学学报(英文版), 1991, 3(3): 71-80 |
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| 作者姓名： | Shu Yonghui Li Jinhu Wang Wenxing |
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| 作者单位： | Shu Yonghui，Li Jinhua and Wang WenxingChinese Research Academy of Environmental Sciences，Beijing 100012，China |
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| 基金项目： | This work was supported by grants from the National Sciences Committee of China |
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| 摘 要： | A study for the photochemical behavior of some polyaromatic hydrocarbons (PAH), for example B(a )P, B( k )F and fluoranthene in coal smoke particles was performed by using indoor Teflon smog chamber.Experiments suggest that the photochemical reaction of PAH is first order reaction and kinetic rates of some PAH were obtained. It was shown that the reaction rate constant is proportional to light intensity and water vapor concentration. Temperature and PAH loading also have influence on PAH decay rate. A model for PAH loss has been set up on the basis of the results of our experiments and the simulating results of this model suggest that coal particle PAH half lives are of the order of a period of days in winter and a few hours in summer. Other factors which may have effect on the photochemical reaction of PAH have also been discussed.
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| 关 键 词： | PAH photochemical reaction smog chamber kinetic rates. |
| 收稿时间： | 1990-08-27 |
The study for polyaromatic hydrocarbons decay on Chinese coal soot particles in atmosphere |
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| Shu Yonghui,Li Jinhua and Wang WenxingChinese Research Academy of Environmental Sciences,Beijing ,China. The study for polyaromatic hydrocarbons decay on Chinese coal soot particles in atmosphere[J]. Journal of environmental sciences (China), 1991, 3(3): 71-80 |
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| Authors: | Shu Yonghui Li Jinhua Wang WenxingChinese Research Academy of Environmental Sciences Beijing China |
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| Affiliation: | Shu Yonghui,Li Jinhua and Wang WenxingChinese Research Academy of Environmental Sciences,Beijing 100012,China |
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| Abstract: | A study for the photochemical behavior of some polyaromatic hydrocarbons (PAH), for example B(a )P, B( k )F and fluoranthene in coal smoke particles was performed by using indoor Teflon smog chamber.Experiments suggest that the photochemical reaction of PAH is first order reaction and kinetic rates of some PAH were obtained. It was shown that the reaction rate constant is proportional to light intensity and water vapor concentration. Temperature and PAH loading also have influence on PAH decay rate. A model for PAH loss has been set up on the basis of the results of our experiments and the simulating results of this model suggest that coal particle PAH half lives are of the order of a period of days in winter and a few hours in summer. Other factors which may have effect on the photochemical reaction of PAH have also been discussed. |
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| Keywords: | PAH photochemical reaction smog chamber kinetic rates. |
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