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腐殖质氧化还原和电子转移特性研究进展

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袁英, 何小松, 席北斗, 高如泰, 檀文炳, 崔东宇, 唐军. 腐殖质氧化还原和电子转移特性研究进展[J]. 环境化学, 2014, 33(12): 2048-2057. doi: 10.7524/j.issn.0254-6108.2014.12.019
引用本文: 袁英, 何小松, 席北斗, 高如泰, 檀文炳, 崔东宇, 唐军. 腐殖质氧化还原和电子转移特性研究进展[J]. 环境化学, 2014, 33(12): 2048-2057. doi: 10.7524/j.issn.0254-6108.2014.12.019
shu
YUAN Ying, HE Xiaosong, XI Beidou, GAO Rutai, TAN Wenbing, CUI Dongyu, TANG Jun. Research progress on the redox and electron transfer capacity of humic substances[J]. Environmental Chemistry, 2014, 33(12): 2048-2057. doi: 10.7524/j.issn.0254-6108.2014.12.019
Citation: YUAN Ying, HE Xiaosong, XI Beidou, GAO Rutai, TAN Wenbing, CUI Dongyu, TANG Jun. Research progress on the redox and electron transfer capacity of humic substances[J]. Environmental Chemistry, 2014, 33(12): 2048-2057. doi: 10.7524/j.issn.0254-6108.2014.12.019
shu

腐殖质氧化还原和电子转移特性研究进展

  • 1.

    中国环境科学研究院环境基准与风险评估国家重点实验室, 北京, 100012;

  • 2.

    中国环境科学研究院地下水与环境系统创新基地, 北京, 100012;

  • 3.

    北京师范大学水科学研究院, 北京, 100875;

  • 4.

    广东省浩蓝环保水污染治理院士工作站, 广州, 510631

  • 基金项目:

    国家杰出青年科学基金项目(51325804)资助.

Research progress on the redox and electron transfer capacity of humic substances

  • 1.

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China;

  • 2.

    Innovation Base of Ground Water & Environmental System Engineering, Chinese Research Academy of Environmental Science, Beijing, 100012, China;

  • 3.

    College of Water Science, Beijing Normal University, Beijing, 100875, China;

  • 4.

    CNHOMELAND Environmental Protection Water Pollution Governance Academician Workstation, Guangzhou, 510631, China

  • Fund Project:

  • 摘要: 腐殖质在无氧和有氧条件下都具有一定的氧化还原能力,其氧化还原能力与氧化还原电势有关,而腐殖质的氧化还原电势受芳香度、取代基类型、取代位置等因素影响.除氧化还原能力外,腐殖质还能介导电子转移,其电子转移能力受腐殖质结构和所处环境两大因素影响.水体腐殖酸比土壤和沉积物腐殖酸具有相对较小的电子接受能力(EAC)和较大的提供电子能力(EDC);pH、温度、光照、氧气条件和微生物活动等因素均对腐殖质氧化能力和电子转移能力具有重要影响.腐殖质可以介导重金属和有机污染物的还原降解,不同重金属还原反应效率差异较大,其中Fe(Ⅲ)盐还原速率最高;有机污染物降解速率从大到小为六氯乙烷(HCE)> 四氯化碳> 三溴甲烷.目前在腐殖质氧化还原特性和电子转移能力研究中还存在诸多不足,需要广大学者做进一步探究.
    Abstract: Humic substances (HS) have redox capacity that is related to their redox potentials under the anaerobic or aerobic conditions. The factors including the degree of aromaticity, substituent type and location can influence the redox potential of HS. In addition to the redox ability, HS can also mediate the transfer of electrons. The electron transfer capacity of HS is influenced by their structure and the environment. Compared to the soil-derived humic acids (HA), the aquatic-derived HA show lower electron accept capacity (EAC) and higher electron donate capacity (EDC).pH, temperature, light, oxygen and microorganism activity all have some impact on the redox capacity and electron transfer capacity of HS. HS can facilitate the reduction of heavy metals and the degradation of organic pollutants. The reduction rate of different metals is different, and the reduction of ferric salts is the fastest. As organic pollutants, the reduction rate is in the following order: hexachloroethane (HCE)>perchlormethane> bromoform. There are still many questions about the redox capacity and electron transfer capacity of HS, that need further exploration.
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  • 收稿日期:  2014-06-07
袁英, 何小松, 席北斗, 高如泰, 檀文炳, 崔东宇, 唐军. 腐殖质氧化还原和电子转移特性研究进展[J]. 环境化学, 2014, 33(12): 2048-2057. doi: 10.7524/j.issn.0254-6108.2014.12.019
引用本文: 袁英, 何小松, 席北斗, 高如泰, 檀文炳, 崔东宇, 唐军. 腐殖质氧化还原和电子转移特性研究进展[J]. 环境化学, 2014, 33(12): 2048-2057. doi: 10.7524/j.issn.0254-6108.2014.12.019
shu
YUAN Ying, HE Xiaosong, XI Beidou, GAO Rutai, TAN Wenbing, CUI Dongyu, TANG Jun. Research progress on the redox and electron transfer capacity of humic substances[J]. Environmental Chemistry, 2014, 33(12): 2048-2057. doi: 10.7524/j.issn.0254-6108.2014.12.019
Citation: YUAN Ying, HE Xiaosong, XI Beidou, GAO Rutai, TAN Wenbing, CUI Dongyu, TANG Jun. Research progress on the redox and electron transfer capacity of humic substances[J]. Environmental Chemistry, 2014, 33(12): 2048-2057. doi: 10.7524/j.issn.0254-6108.2014.12.019
shu

腐殖质氧化还原和电子转移特性研究进展

  • 1.  中国环境科学研究院环境基准与风险评估国家重点实验室, 北京, 100012;
  • 2.  中国环境科学研究院地下水与环境系统创新基地, 北京, 100012;
  • 3.  北京师范大学水科学研究院, 北京, 100875;
  • 4.  广东省浩蓝环保水污染治理院士工作站, 广州, 510631
  • 收稿日期:  2014-06-07
基金项目:

国家杰出青年科学基金项目(51325804)资助.

摘要: 腐殖质在无氧和有氧条件下都具有一定的氧化还原能力,其氧化还原能力与氧化还原电势有关,而腐殖质的氧化还原电势受芳香度、取代基类型、取代位置等因素影响.除氧化还原能力外,腐殖质还能介导电子转移,其电子转移能力受腐殖质结构和所处环境两大因素影响.水体腐殖酸比土壤和沉积物腐殖酸具有相对较小的电子接受能力(EAC)和较大的提供电子能力(EDC);pH、温度、光照、氧气条件和微生物活动等因素均对腐殖质氧化能力和电子转移能力具有重要影响.腐殖质可以介导重金属和有机污染物的还原降解,不同重金属还原反应效率差异较大,其中Fe(Ⅲ)盐还原速率最高;有机污染物降解速率从大到小为六氯乙烷(HCE)> 四氯化碳> 三溴甲烷.目前在腐殖质氧化还原特性和电子转移能力研究中还存在诸多不足,需要广大学者做进一步探究.

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