水环境中纳米银的生成与转化研究

发布时间：2018-01-07 18:34

本文关键词：水环境中纳米银的生成与转化研究　出处：《中国科学:化学》2017年09期 　论文类型：期刊论文

【摘要】：纳米银因具有优良的杀菌消炎特性及物理化学性能在工业生产、生物医药及日常生活中被广泛应用.纳米银产品的生产和使用会不可避免地向环境释放纳米银,纳米银已被认为是一种新型污染物.纳米银性质较活泼,进入水环境后可能会发生多种物理化学转化,影响其环境归趋、迁移转化及生物效应.因此,研究纳米银在水环境中的赋存形态及转化过程,是科学评估纳米银的环境和生物安全性的基础和前提.本文针对近年来水环境中纳米银的生成及转化方面的研究进展进行了较为全面的总结,包括纳米银的天然化学生成和生物生成,以及纳米银在水环境中的团聚、表面微层富集、氧化溶解、氯化、硫化等物理化学转化,并探讨了后续研究的发展方向.
[Abstract]:Nano-silver has been widely used in industrial production, biomedicine and daily life because of its excellent bactericidal and anti-inflammatory properties and physical and chemical properties. The production and use of nano-silver products will inevitably release nano-silver to the environment. Silver nanoparticles have been considered as a new type of contaminants. Silver nanoparticles are active in nature and may undergo a variety of physical and chemical transformations after entering the water environment, which will affect their environmental fate, migration, transformation and biological effects. The occurrence and transformation process of nano-silver in water environment were studied. It is the basis and prerequisite for scientific evaluation of the environmental and biological safety of silver nanoparticles. This paper summarizes the progress in the generation and transformation of silver nanoparticles in water environment in recent years. Including the natural chemical and biological generation of silver nanoparticles, as well as the agglomeration of silver nanoparticles in the water environment, surface microlayer enrichment, oxidative dissolution, chlorination, sulfur and other physical and chemical transformation. The development direction of follow-up research is also discussed.
【作者单位】：中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室;
【基金】：国家重点研发计划(编号:2016YFA0203102) 国家自然科学基金(编号:21620102008,21337004,21507147)资助项目
【分类号】：O614.122;TB383.1
【正文快照】： 纳米银因具有良好的光学,电学及催化性能an业领域得到了大鸶应用.s尤其是因其具有优良的杀菌消炎的特性而被广泛添加到b背用品中,如纺织品、靖毒喷雾、化妆品、食品添加剂、甩敷料、洗衣机、mD水器等°^1截至2015年3月,美国纳米消费品产.品^录|1公布的全球1814种t纳米材料的

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