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叶绿素光敏化降解水中阿特拉津

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刘延湘, 张旭, 邓凤霞. 叶绿素光敏化降解水中阿特拉津[J]. 环境化学, 2015, 34(9): 1748-1751. doi: 10.7524/j.issn.0254-6108.2015.09.2015032609
引用本文: 刘延湘, 张旭, 邓凤霞. 叶绿素光敏化降解水中阿特拉津[J]. 环境化学, 2015, 34(9): 1748-1751. doi: 10.7524/j.issn.0254-6108.2015.09.2015032609
shu
LIU Yanxiang, ZHANG Xu, DENG Fengxia. Chlorophyll photosensitized degradation of atrazine in water[J]. Environmental Chemistry, 2015, 34(9): 1748-1751. doi: 10.7524/j.issn.0254-6108.2015.09.2015032609
Citation: LIU Yanxiang, ZHANG Xu, DENG Fengxia. Chlorophyll photosensitized degradation of atrazine in water[J]. Environmental Chemistry, 2015, 34(9): 1748-1751. doi: 10.7524/j.issn.0254-6108.2015.09.2015032609
shu

叶绿素光敏化降解水中阿特拉津

  • 1.

    江汉大学化学与环境工程学院, 武汉, 430056;

  • 2.

    武汉大学资源与环境科学学院, 武汉, 430079

  • 基金项目:

    国家自然科学基金(21207104)资助.

Chlorophyll photosensitized degradation of atrazine in water

  • 1.

    School of Chemical and Environmental Engineering, Jianghan University, Wuhan, 430056, China;

  • 2.

    School of Resources and Environmental Science, Wuhan University, Wuhan, 430079, China

  • Fund Project:

  • 摘要: 为考察阿特拉津在使用过程中的环境行为,实验在模拟太阳光照射下,以叶绿素铜钠盐作为光敏化剂,探讨了阿特拉津光降解的影响因素及降解动力学.结果表明,阿特拉津直接光解较慢,叶绿素铜钠加入可以促进阿特拉津的光降解,具有敏化作用,当阿特拉津初始浓度为2 mg·L-1,加入8 mg·L-1叶绿素铜钠时,阿特拉津的降解率最大,达52.4%.pH影响阿特拉津的光敏化降解,在pH=7时降解率较大,且随着光照时间的增加,阿特拉津的降解率也随之提高.阿特拉津的光降解反应符合一级反应动力学,半衰期为174 min.
    Abstract: In order to investigate the environmental behavior of atrazine in the process of utilization, the influences and the kinetics of chlorophyll photosensitized degradation of atrazine in water under simulated solar irradiation were investigated. The results showed that:sodium copper chlorophyll effectively catalyzed the degradation of atrazine. When the initial concentration of atrazine was 2 mg·L-1, and the dosage of sodium copper chlorophyllin was 8 mg·L-1, the maximum degradation ratio of atrazine was 52.4%. The degradation ratio of atrazine was pH dependent and reached the maximum at pH 7. Atrazine degradation ratio increased with illumination time, and followed pseudo first-order kinetics with a half-life of 174 min.
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  • [1] Graymore M, Stagnitti F, Allinson G. Impacts of atrazine in aquatic ecosystems[J]. Environment International. 2001, 26(7/8):483-495
    [2] Lin T, Wen Y, Jiang L, et al. Study of atrazine degradation in subsurface flow constructed wetland under different salinity[J]. Chemosphere 2008, 72 (1):122-128
    [3] 陈建军,何月秋,祖艳群,等. 除草剂阿特拉津的生态风险与植物修复研究进展[J]. 农业环境科学学报,2010,29(增刊):289-293
    [4] Schoefs B. Chlorophyll and carotenoid analysis in Food Products, a practical case-by case view[J]. Trends in Food Science and Technology, 2003, 22(6):335-339
    [5] 张怀斌. 叶绿素的光学性质及其应用[D]. 济南:山东师范大学硕士学位论文,2008
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    [7] 岳永德,刘根凤.农药的环境光化学及其应用[J]. 安徽农业大学学报,1995,22(4):339-345
    [8] Rontani J F. Visible light-dependent degradation of lipidic phytoplanktonic components during senescence:A review[J]. Phytochemistry, 2001, 58 (2):187-202
    [9] 程子波,邹华,向丽,等. 叶绿素作用下微囊藻毒素LR的光降解[J]. 环境化学,2009,28(5):684-686
    [10] 李绍峰,梁媛,李平,等. O3/H2O2降解阿特拉津影响因素研究[J]. 环境工程学报,2008,2 (3):359-361
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出版历程
  • 收稿日期:  2015-03-26
  • 刊出日期:  2015-09-15
刘延湘, 张旭, 邓凤霞. 叶绿素光敏化降解水中阿特拉津[J]. 环境化学, 2015, 34(9): 1748-1751. doi: 10.7524/j.issn.0254-6108.2015.09.2015032609
引用本文: 刘延湘, 张旭, 邓凤霞. 叶绿素光敏化降解水中阿特拉津[J]. 环境化学, 2015, 34(9): 1748-1751. doi: 10.7524/j.issn.0254-6108.2015.09.2015032609
shu
LIU Yanxiang, ZHANG Xu, DENG Fengxia. Chlorophyll photosensitized degradation of atrazine in water[J]. Environmental Chemistry, 2015, 34(9): 1748-1751. doi: 10.7524/j.issn.0254-6108.2015.09.2015032609
Citation: LIU Yanxiang, ZHANG Xu, DENG Fengxia. Chlorophyll photosensitized degradation of atrazine in water[J]. Environmental Chemistry, 2015, 34(9): 1748-1751. doi: 10.7524/j.issn.0254-6108.2015.09.2015032609
shu

叶绿素光敏化降解水中阿特拉津

  • 1.  江汉大学化学与环境工程学院, 武汉, 430056;
  • 2.  武汉大学资源与环境科学学院, 武汉, 430079
  • 收稿日期:  2015-03-26
基金项目:

国家自然科学基金(21207104)资助.

摘要: 为考察阿特拉津在使用过程中的环境行为,实验在模拟太阳光照射下,以叶绿素铜钠盐作为光敏化剂,探讨了阿特拉津光降解的影响因素及降解动力学.结果表明,阿特拉津直接光解较慢,叶绿素铜钠加入可以促进阿特拉津的光降解,具有敏化作用,当阿特拉津初始浓度为2 mg·L-1,加入8 mg·L-1叶绿素铜钠时,阿特拉津的降解率最大,达52.4%.pH影响阿特拉津的光敏化降解,在pH=7时降解率较大,且随着光照时间的增加,阿特拉津的降解率也随之提高.阿特拉津的光降解反应符合一级反应动力学,半衰期为174 min.

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