单体铝与纳米铝团簇絮凝剂的残余毒性效应  

Residual toxicity effects of monomeric aluminum and polymeric nanometer aluminum cluster

作　　者：吴悦菡 田晨浩 冯成洪[1,2] Yuehan WU;Chenhao TIAN;Chenghong FENG(State Key Laboratory of Water Environment Simulation,School of Environment,Beijing Normal University,Beijing,100875,China;Key Laboratory for Water and Sediment Science of Ministry of Education,School of Environment,Beijing Normal University,Beijing,100875,China)

机构地区：[1]北京师范大学环境学院水环境模拟国家重点实验室,北京100875 [2]北京师范大学环境学院水沙科学教育部重点实验室,北京100875

出　　处：《环境化学》2021年第5期1535-1545,共11页Environmental Chemistry

基　　金：国家自然科学基金(21677017)资助.

摘　　要：铝盐絮凝剂是国内外最常用的水处理和水环境修复药剂,一直以来对其残余毒性研究主要是从传统单体铝角度进行探索。残余铝的生物毒性与其赋存形态具有相关性。目前针对铝总量毒性的研究较多,但从形态角度对不同形态羟基铝尤其是纳米Al_(13)团簇毒性效应的研究相对缺乏,且已有研究结果存在争议。单体铝在一定条件下可转化为纳米铝团簇,进一步增大残余铝的毒性效应复杂性。为此,本研究在调查铝残留途径和来源的基础上,深入探讨了不同形态羟基铝(无机单体离子态Alm、纳米多核团簇态Al_(13))毒性效应的研究进展,分析残余铝的毒性效应特征和影响因素,为优化铝盐絮凝剂投加、残余铝控制标准修订和确保水生态环境安全提供参考。The aluminum salt flocculant is the most commonly used agent for water treatment,and its residual toxicity has been studied from the perspective of monomeric aluminum.The bio-toxicity and bio-availability differences of residual aluminum were dependent on the speciation.Previous research mainly focused on the aluminum toxicity on the perspective of dose-effect relationship,lacking the view from aluminum species and residual clusters.In addition,residual aluminum could transform into nanometer polymeric cluster under natural conditions,and also enhance the bio-toxicities.The toxicity of different Al species(monomeric Alm,polymeric nano-Al_(13))were compared and analyzed in this study,which facilitates the optimizing the dosage of coagulants in water treatment processes,and further protecting the ecological safety of water environment.

关 键 词：残留铝 纳米铝团簇 絮凝剂 毒性效应 

分 类 号：X171.5[环境科学与工程—环境科学] TQ421[化学工程]