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热活化过硫酸盐降解水体中毒死蜱

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李旭伟, 张亚, 王国庆, 冯艳红, 郑丽萍, 龙涛, 林玉锁. 热活化过硫酸盐降解水体中毒死蜱[J]. 环境化学, 2016, 35(10): 2089-2095. doi: 10.7524/j.issn.0254-6108.2016.10.2016020402
引用本文: 李旭伟, 张亚, 王国庆, 冯艳红, 郑丽萍, 龙涛, 林玉锁. 热活化过硫酸盐降解水体中毒死蜱[J]. 环境化学, 2016, 35(10): 2089-2095. doi: 10.7524/j.issn.0254-6108.2016.10.2016020402
shu
LI Xuwei, ZHANG Ya, WANG Guoqing, FENG Yanhong, ZHENG Liping, LONG Tao, LIN Yusuo. Degradation of chlorpyrifos by thermo activated persulfate oxidation processes in water[J]. Environmental Chemistry, 2016, 35(10): 2089-2095. doi: 10.7524/j.issn.0254-6108.2016.10.2016020402
Citation: LI Xuwei, ZHANG Ya, WANG Guoqing, FENG Yanhong, ZHENG Liping, LONG Tao, LIN Yusuo. Degradation of chlorpyrifos by thermo activated persulfate oxidation processes in water[J]. Environmental Chemistry, 2016, 35(10): 2089-2095. doi: 10.7524/j.issn.0254-6108.2016.10.2016020402
shu

热活化过硫酸盐降解水体中毒死蜱

  • 1.

    环境保护部南京环境科学研究所, 南京, 210042;

  • 2.

    国家环境保护土壤环境管理与污染控制重点实验室, 南京, 210042;

  • 3.

    南京农业大学资源与环境科学学院, 南京, 210095

  • 基金项目:

    中央级公益性科研院所基本科研业务专项（20160308）资助.

Degradation of chlorpyrifos by thermo activated persulfate oxidation processes in water

  • 1.

    Nanjing Institute of Environmental Science, Ministry of Environmental Protection of the People's Republic of China, Nanjing, 210042, China;

  • 2.

    State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing, 210042, China;

  • 3.

    College of Resource and Environmental Science, Nanjing Agricultural University, Nanjing, 210095, China

  • Fund Project: Supported by Central Public Welfare Scientific Research Institute of Basic Scientific Research Business Special (20160308).

  • 摘要: 本文研究了热活化过硫酸盐降解水体中有机磷农药毒死蜱.考察了温度、过硫酸盐浓度、初始pH值、常见阴离子（CO32-、HCO3-、Cl-和SO42-）对毒死蜱降解影响.结果表明，毒死蜱的降解符合准一级动力学，反应速率随过硫酸盐浓度的增加而增大，温度对毒死蜱降解速率的影响符合阿伦尼乌斯模型，pH值的改变对毒死蜱的降解没有显著影响.天然水体4种常见阴离子中，SO42-对降解速率无显著影响，Cl-对毒死蜱降解有促进作用，CO32-和HCO3-抑制毒死蜱降解，且抑制程度为CO32->HCO3-.通过自由基淬灭实验验证了体系中·OH和SO4-·自由基的存在，且毒死蜱降解过程中·OH起主要作用.
    Abstract: The degradation of chlorpyrifos, a typical organophosphorus pesticide, by thermos activated persulfate was systematically studied in this work. The influences of temperature, persulfate concentration, pH, and common anions (i.e. CO32-, HCO3-, Cl- and SO42-) on the degradation of chlorpyrifos were investigated. The results indicated that the degradation of chlorpyrifos followed pseudo-first-order kinetics. The reaction rate increased with persulfate concentration. Temperature dependence of chlorpyrifos degradation rate fitted well with the Arrhenius model. The pH had no significant effect on the degradation of chlorpyrifos. As for the four common ions in natural water, SO42- had no effect on the degradation, Cl- promoted the degradation of chlorpyrifos, while CO32- and HCO3- inhibited the degradation and the degree of inhibition was CO32->HCO3-. Quenching experiment confirmed the presence of ·OH and SO4-·in the system, and that ·OH played a critical role on chlorpyrifos degradation.
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  • 收稿日期:  2016-02-04
  • 刊出日期:  2016-10-15
李旭伟, 张亚, 王国庆, 冯艳红, 郑丽萍, 龙涛, 林玉锁. 热活化过硫酸盐降解水体中毒死蜱[J]. 环境化学, 2016, 35(10): 2089-2095. doi: 10.7524/j.issn.0254-6108.2016.10.2016020402
引用本文: 李旭伟, 张亚, 王国庆, 冯艳红, 郑丽萍, 龙涛, 林玉锁. 热活化过硫酸盐降解水体中毒死蜱[J]. 环境化学, 2016, 35(10): 2089-2095. doi: 10.7524/j.issn.0254-6108.2016.10.2016020402
shu
LI Xuwei, ZHANG Ya, WANG Guoqing, FENG Yanhong, ZHENG Liping, LONG Tao, LIN Yusuo. Degradation of chlorpyrifos by thermo activated persulfate oxidation processes in water[J]. Environmental Chemistry, 2016, 35(10): 2089-2095. doi: 10.7524/j.issn.0254-6108.2016.10.2016020402
Citation: LI Xuwei, ZHANG Ya, WANG Guoqing, FENG Yanhong, ZHENG Liping, LONG Tao, LIN Yusuo. Degradation of chlorpyrifos by thermo activated persulfate oxidation processes in water[J]. Environmental Chemistry, 2016, 35(10): 2089-2095. doi: 10.7524/j.issn.0254-6108.2016.10.2016020402
shu

热活化过硫酸盐降解水体中毒死蜱

  • 1.  环境保护部南京环境科学研究所, 南京, 210042;
  • 2.  国家环境保护土壤环境管理与污染控制重点实验室, 南京, 210042;
  • 3.  南京农业大学资源与环境科学学院, 南京, 210095
  • 收稿日期:  2016-02-04
基金项目:

中央级公益性科研院所基本科研业务专项（20160308）资助.

摘要: 本文研究了热活化过硫酸盐降解水体中有机磷农药毒死蜱.考察了温度、过硫酸盐浓度、初始pH值、常见阴离子（CO32-、HCO3-、Cl-和SO42-）对毒死蜱降解影响.结果表明，毒死蜱的降解符合准一级动力学，反应速率随过硫酸盐浓度的增加而增大，温度对毒死蜱降解速率的影响符合阿伦尼乌斯模型，pH值的改变对毒死蜱的降解没有显著影响.天然水体4种常见阴离子中，SO42-对降解速率无显著影响，Cl-对毒死蜱降解有促进作用，CO32-和HCO3-抑制毒死蜱降解，且抑制程度为CO32->HCO3-.通过自由基淬灭实验验证了体系中·OH和SO4-·自由基的存在，且毒死蜱降解过程中·OH起主要作用.

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