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生态学杂志 ›› 2020, Vol. 39 ›› Issue (9): 3127-3137.doi: 10.13292/j.1000-4890.202009.011

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砷与天然溶解性有机质相互作用研究进展

王亦尧1,丁士元1,2,杨梦迪1,吕红1,崔高仰1,李晓东1,2*   

  1. 1天津大学表层地球系统科学研究院, 天津 300072; 2天津市环渤海地球关键带科学与可持续发展重点实验室, 天津 300072)
  • 出版日期:2020-09-10 发布日期:2021-03-10

Research progress on the interaction between arsenic and dissolved organic matter.



WANG Yi-yao1, DING Shi-yuan1,2, YANG Meng-di1, Lyu Hong1, CUI Gao-yang1, LI Xiao-dong1,2* #br#
WANG Yiyao1, DING Shiyuan1,2, YANG Mengdi1, L Hong1, CUI Gaoyang1, LI Xiaodong1,2*   

  1. (1Institute of SurfaceEarth System Science, Tianjin University, Tianjin 300072, China; 2Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin 300072, China).
  • Online:2020-09-10 Published:2021-03-10

摘要: 砷(As)是一种来源广泛的重金属元素,其在天然水体中的主要存在形式为无机态的砷酸盐和亚砷酸盐。天然水体中的溶解性有机质(DOM)会与砷发生复杂的络合作用,探究两者间的络合作用对了解砷在水体中的迁移转化规律有着重要意义。现有研究缺乏对As-DOM络合物关系的深入讨论,为厘清水体As与DOM的络合机制及影响因素,本文重点综述了:(1)水体中不同形态、价态砷的来源及转化过程;(2)As与DOM的直接络合及金属离子参与下的间接络合机理;(3)pH、温度和盐度等环境因子对AsDOM络合作用的影响;(4)对AsDOM络合物的分离、分析技术进行归纳对比,如色谱法、光谱法及多种分析手段联用的方法;(5)总结现有研究的不足之处及展望后续研究发展方向。本文为后续水体砷迁移转化及砷溶解性有机质络合物相关研究提供参考及理论支撑。

关键词: 砷, 溶解性有机质, 相互作用, 分析方法

Abstract: Arsenic (As) is a widely distributed heavy metal element, with the main forms of inorganic arsenate and arsenite in natural waters. Dissolved organic matter (DOM) in natural waters will be complexly interacted with As. It is significant to explore the complexation between DOM and As with the aim to understand the migration and transformation of As in waters. To clarify the complexing mechanism, influencing factors and analytical methods of As and DOM in waters, we focused on following aspects: (1) The source and transformation process of different forms and valences of As in waters; (2) The direct complexation of As with DOM and the indirect complexation with the participation of metal ions; (3) The effects of pH, temperature and salinity on As-DOM complexation; (4) Comparing the separation and analysis technologies of As-DOM complex, such as chromatography, spectrometry and combination of various analysis methods; (5) Summarizing the shortcomings of the existing research and the direction of the future research. The discussions of AsDOM complexation provide theoretical support for further research on As migration and transformation in waters and AsDOM complex.

Key words: arsenic, dissolved organic matter, interaction, analytical method.