| 三唑酮在水中的光化学降解及其影响因素 |
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| 引用本文： | 刘毅华,杨仁斌,郭正元,肖曲.三唑酮在水中的光化学降解及其影响因素[J].生态与农村环境学报,2005,21(4):68-71. |
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| 作者姓名： | 刘毅华 杨仁斌 郭正元 肖曲 |
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| 作者单位： | 湖南农业大学,农业环境保护研究所,湖南,长沙,410128;湖南农业大学,农业环境保护研究所,湖南,长沙,410128;湖南农业大学,农业环境保护研究所,湖南,长沙,410128;湖南农业大学,农业环境保护研究所,湖南,长沙,410128 |
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| 基金项目： | 农业部农药残留基金项目(NC-2002-734) |
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| 摘 要： | 以太阳光和高压汞灯为光源,研究了水溶液中三唑酮光化学降解的影响因子。结果表明:在不同光源和透光介质下,三唑酮的降解能力从大到小依次为:石英试管 高压汞灯、玻璃试管 高压汞灯、石英试管 太阳光、玻璃试管 太阳光、暗室;水溶液中三唑酮初始浓度越高,其光降解率越低,呈负相关关系;丙酮对三唑酮在水中的光解有极显著的光敏作用,光敏效率与丙酮添加量有显著相关性;三唑酮的光解实质为光氧化作用,溶解氧含量对三唑酮光解有重大影响。
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| 关 键 词： | 三唑酮 光解 影响因子 丙酮 溶解氧 |
| 文章编号： | 1001-5906(2005)04-0068-04 |
| 修稿时间： | 2005年1月19日 |
Photolysis of triadimefon in aquatic environment and its affecting factors |
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| LIU Yi-hua,YANG Ren-bin,GUO Zheng-yuan,XIAO Qu.Photolysis of triadimefon in aquatic environment and its affecting factors[J].Journal of Ecology and Rural Environment,2005,21(4):68-71. |
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| Authors: | LIU Yi-hua YANG Ren-bin GUO Zheng-yuan XIAO Qu |
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| Abstract: | Sunlight and high pressure mercury lamp(HPML)were used as light sources to study photolysis of triadimefon in aquatic solution and explore affecting factors.The results show that under different lamp-houses and in different translucid media the photolytic rate of triadimefon followed such a sequence as quartz cuvette HPML>glass cuvette HPML>quartz cuvette sunlight>glass cuvette sunlight>darkroom,and that the higher the initial concentration of triadimefon in the aquatic solution,the lower the photolytic rate.It was also found that acetone was an effective aid to improve photosensitivity of triadimefon to photolysis and its photosensitization rate was found distinctly related to its concentration.Moreover,the photolysis of triadimefon is photo-oxidation in nature,so dissolved oxygen in aquatic solution has an important effect on photolysis of triadimefon. |
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| Keywords: | triadimefon photolysis influence factor acetone dissolved oxygen |
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