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.
Silver nanoparticles （AgNPs） as one of the most widely used metal nanomaterials can enter soil and water environment via various pathways, exert toxicity on water-borne organisms and deteriorate the aquatic eco-environment. With complex composition of natural water, the physico- chemical property of AgNPs as nano materials makes their transformation process more complicated in water system. Therefore, understanding of the fate and transport of AgNPs in aqueous environ- ment is extremely important for water quality management and protection of the eco-environment. Deve-lopment of modern science and technology has made it possible to study the process of the dis- solution of AgNPs in environment. This paper summarized the source and risk of AgNPs in environ- ment, analyzed impacts of environmental factors such as pH, dissolved oxygen, ionic strength and intrinsic factors of AgNPs such as particle size and coating on the AgNPs transformation in water en- vironment, and summarized the main analytical techniques for the AgNPs size, potential and mor- phology. Finally, this paper pointed out the major research gaps in the current research and provided prospective for the future research.
出处
《应用生态学报》
CAS
CSCD
北大核心
2017年第6期2073-2082,共10页
Chinese Journal of Applied Ecology
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~~
关键词
纳米银
水体环境
归宿
转化
分析技术
AgNP
water environment
fate
transformation
analytical technique.
作者简介
作者简介杨悦锁，男，1962年生，博士生导师．主要从事包气带和地下水污染过程及其修复机理研究．E-mail：YangYuesuo@jlu．edu．cn
通讯作者Correspondingauthor．E-mail：yangxinyao@hotmail．com
