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精喹禾灵在高岭土和蒙脱石中的吸附行为

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丁春霞, 龚道新, 肖浩, 任颖俊, 杨丽华. 精喹禾灵在高岭土和蒙脱石中的吸附行为[J]. 环境化学, 2013, 32(6): 1067-1072. doi: 10.7524/j.issn.0254-6108.2013.06.023
引用本文: 丁春霞, 龚道新, 肖浩, 任颖俊, 杨丽华. 精喹禾灵在高岭土和蒙脱石中的吸附行为[J]. 环境化学, 2013, 32(6): 1067-1072. doi: 10.7524/j.issn.0254-6108.2013.06.023
shu
DING Chunxia, GONG Daoxin, XIAO Hao, REN Yingjun, YANG Lihua. Adsorption of quizalop-p-ethyl on montmorillonite and kaolinite[J]. Environmental Chemistry, 2013, 32(6): 1067-1072. doi: 10.7524/j.issn.0254-6108.2013.06.023
Citation: DING Chunxia, GONG Daoxin, XIAO Hao, REN Yingjun, YANG Lihua. Adsorption of quizalop-p-ethyl on montmorillonite and kaolinite[J]. Environmental Chemistry, 2013, 32(6): 1067-1072. doi: 10.7524/j.issn.0254-6108.2013.06.023
shu

精喹禾灵在高岭土和蒙脱石中的吸附行为

  • 1.

    湖南农业大学理学院, 长沙, 410128;

  • 2.

    湖南农业大学资源环境学院, 长沙, 410128;

  • 3.

    湖南农业大学农业环境保护研究所, 长沙, 410128

  • 基金项目:

    农业部农药残留试验基金项目(2010H216)资助.

Adsorption of quizalop-p-ethyl on montmorillonite and kaolinite

  • 1.

    College of Science, Hunan Agricultural University, Changsha, 410128, China;

  • 2.

    College of Resource and Environmental, Hunan Agricultural University, Changsha, 410128, China;

  • 3.

    Institute of Agricultural Environmental Protection, Hunan Agricultural University, Changsha, 410128, China

  • Fund Project:

  • 摘要: 采用批量平衡实验,研究了精喹禾灵在蒙脱石和高岭土中的吸附行为及作用机理.结果表明,精喹禾灵在这两种供试黏土矿物中的吸附过程分为快速吸附、慢速吸附和吸附平衡3个阶段,吸附平衡时间都约为12 h;Langmuir模型能较好地描述其在两种供试黏土矿物中的吸附行为;蒙脱石和高岭土对精喹禾灵的最大吸附容量的关系为蒙脱石>高岭土;傅立叶变换红外光谱以及X-射线衍射分析显示,在吸附过程中精喹禾灵分子进入了蒙脱石层间,而未进入到高岭土层间;蒙脱石主要是通过其层间结构对精喹禾灵进行吸附,而高岭土则主要是通过硅氧外表面发生吸附,其吸附作用力主要是氢键.
    Abstract: Batch equilibrium experiments were performed to study the adsorption characteristics and adsorption mechanisms of quizalofop-p-ethyl on montmorillonite and kaolinite. The results showed that the adsorption of quizalofop-p-ethyl on the two clay minerals could be divided into three phases:fast adsorption phase,slow adsorption phase,and equilibrium phase 12 h. The adsorption isotherms of quizalofop-p-ethyl on the two clay minerals were well fitted by the Langmuir equation.The adsorption capacity of quizalofop-p-ethyl on montmorillonite was larger than on kaolinite. FT-IR spectroscopy and XRD analysis indicated that quizalop-p-ethyl could enter the interlayer of montmorillonite,but not kaolinite. Hydrogen bonds might exist between quizalofop-p-ethyl and kadinite minerals.
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  • 收稿日期:  2012-09-06
丁春霞, 龚道新, 肖浩, 任颖俊, 杨丽华. 精喹禾灵在高岭土和蒙脱石中的吸附行为[J]. 环境化学, 2013, 32(6): 1067-1072. doi: 10.7524/j.issn.0254-6108.2013.06.023
引用本文: 丁春霞, 龚道新, 肖浩, 任颖俊, 杨丽华. 精喹禾灵在高岭土和蒙脱石中的吸附行为[J]. 环境化学, 2013, 32(6): 1067-1072. doi: 10.7524/j.issn.0254-6108.2013.06.023
shu
DING Chunxia, GONG Daoxin, XIAO Hao, REN Yingjun, YANG Lihua. Adsorption of quizalop-p-ethyl on montmorillonite and kaolinite[J]. Environmental Chemistry, 2013, 32(6): 1067-1072. doi: 10.7524/j.issn.0254-6108.2013.06.023
Citation: DING Chunxia, GONG Daoxin, XIAO Hao, REN Yingjun, YANG Lihua. Adsorption of quizalop-p-ethyl on montmorillonite and kaolinite[J]. Environmental Chemistry, 2013, 32(6): 1067-1072. doi: 10.7524/j.issn.0254-6108.2013.06.023
shu

精喹禾灵在高岭土和蒙脱石中的吸附行为

  • 1.  湖南农业大学理学院, 长沙, 410128;
  • 2.  湖南农业大学资源环境学院, 长沙, 410128;
  • 3.  湖南农业大学农业环境保护研究所, 长沙, 410128
  • 收稿日期:  2012-09-06
基金项目:

农业部农药残留试验基金项目(2010H216)资助.

摘要: 采用批量平衡实验,研究了精喹禾灵在蒙脱石和高岭土中的吸附行为及作用机理.结果表明,精喹禾灵在这两种供试黏土矿物中的吸附过程分为快速吸附、慢速吸附和吸附平衡3个阶段,吸附平衡时间都约为12 h;Langmuir模型能较好地描述其在两种供试黏土矿物中的吸附行为;蒙脱石和高岭土对精喹禾灵的最大吸附容量的关系为蒙脱石>高岭土;傅立叶变换红外光谱以及X-射线衍射分析显示,在吸附过程中精喹禾灵分子进入了蒙脱石层间,而未进入到高岭土层间;蒙脱石主要是通过其层间结构对精喹禾灵进行吸附,而高岭土则主要是通过硅氧外表面发生吸附,其吸附作用力主要是氢键.

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