Chemical transformation of silver nanoparticles in aquatic environments: Mechanism, morphology and toxicity----中国科学院藻类生物学重点实验室

论文名称	Chemical transformation of silver nanoparticles in aquatic environments: Mechanism, morphology and toxicity
作者	Zhang, Weicheng; Xiao, Bangding; Fang, Tao
摘要	Silver nanoparticles (Ag NPs) have been inevitably introduced into ecological environment during their extensive applications in daily human life. Thermodynamically, Ag NPs are unstable and transform into other species under various aqueous conditions. Ag NPs and their transformation products pose potential threats to environment and humans. However, the complex environmental conditions and transformations of Ag NPs complicate their human health and environmental risk assessment. To bridge the knowledge gap, four essential environmental transformations, oxidative dissolution, sulfidation, chlorination and photoreduction, of Ag NPs are reviewed herein. The mechanism, morphology and size change, as well as the toxicity of Ag NPs during these transformations under certain aqueous conditions are detailed. In particular, these environmental transformations have shown strong correlations that are discussed. The transformation, fate, bioavailability, morphology and toxicity of Ag NPs are critical factors and should be considered in a complete human health and environmental risk assessment of Ag NPs. The fluctuation of these factors in the realistic environment is also vital and should be considered. (C) 2017 Elsevier Ltd. All rights reserved.
卷	191
期
页码	324-334
发表时间	2018
刊物名称	CHEMOSPHERE
全文链接	http://dx.doi.org/10.1016/j.chemosphere.2017.10.016