天然水环境中纳米银的来源、分析与转化

发布时间：2018-01-04 10:16

本文关键词：天然水环境中纳米银的来源、分析与转化　出处：《应用生态学报》2017年06期 　论文类型：期刊论文

【摘要】：纳米银(AgNPs)作为当前应用最广的金属纳米材料之一,可通过各种途径进入水土环境,对水生生物产生毒性,从而破坏水体生态环境.天然水体成分复杂,纳米银具有纳米材料特殊的理化性质,使得其在水体中的转化过程变得尤为复杂,因此理解纳米银在水环境中的转化与归趋,对于水质管理与生态环境保护极其重要.现代科技的发展为更好地研究纳米银在进入环境中后的溶解、聚凝等一系列转化过程提供了可能.本文概述了环境中纳米银的来源和环境风险,分析了pH、溶解氧、离子强度等环境因素及粒径、涂层等自身因素对其在水体环境中转化的影响,并归纳了对纳米银的粒径、电位及形貌等分析的主要技术手段.最后指出了当前研究中存在的主要不足,并对今后的研究方向进行了展望.
[Abstract]:Silver nanoparticles (AgNPs) as one of the most widely used metal nano materials into the soil and water environment through various channels to produce toxic to aquatic organisms, thus destroying the water ecological environment. Natural water complex composition and physicochemical properties of nano silver nanoparticles with special materials, making it in the water in the transformation process become more complex, therefore, understanding the transformation of silver nanoparticles in the aquatic environment and fate, is very important to the management of water quality and ecological environment protection. The development of modern science and technology to better study the dissolution of nano silver in after entering the environment, provides the possibility of coagulation and a series of transformation process. This paper summarizes the source of nano silver environment and the environment the risk analysis of pH, dissolved oxygen, ionic strength and environmental factors such as particle size, coating and other factors on the impact of its transformation in water environment, and summarizes the nano silver particle size, and potential In the end, the main shortcomings of the current research are pointed out, and the future research direction is also prospected.

【作者单位】：沈阳大学区域污染环境生态修复教育部重点实验室;吉林大学地下水和环境教育部重点实验室;四川农业大学环境学院;
【基金】：国家自然科学基金项目(41471409,41272255,41472237) 辽宁省创新团队项目(LT2015017) 沈阳市科学事业费竞争性选择项目资助~~
【分类号】：O614.122;TB383.1
【正文快照】： 本文由国家自然科学基金项目(41471409,41272255,41472237)、辽宁省创新团队项目(LT2015017)和沈阳市科学事业费竞争性选择项目资助This work was supported by the National Natural Science Founda-tion of China(41471409,41272255,41472237),Liaoning InnovationTeam Proj

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