Re-evaluation of stability and toxicity of silver sulfide nanoparticle in environmental water: Oxidative dissolution by manganese oxide

CORC > 生态环境研究中心 > 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

	Re-evaluation of stability and toxicity of silver sulfide nanoparticle in environmental water: Oxidative dissolution by manganese oxide
	Zhang, Hangjun; Wimmer, Andreas; Shi, En; Liu, Qian; Yang, Xuezhi; Zhang, Xiaoxia; Xu, Zhenlan; Li, Lingxiangyu
刊名	ENVIRONMENTAL POLLUTION
	2018-01-12
卷号	243 页码:1242-1251
关键词	Silver sulfide nanoparticle Manganese oxide Stability Oxidative dissolution Acute toxicity
ISSN号	0269-7491
文献子类	Article
英文摘要	Stability of silver sulfide nanoparticle (Ag2S-NP) in the environment has recently drawn considerable attention since it is associated with environmental risk. Although the overestimated stability of Ag2S-NP in aqueous solution has already been recognized, studies on transformation of Ag2S-NP in environmental water are still very scarce. Here we reported that Ag2S-NP could undergo dissolution by manganese(IV) oxide (MnO2), an important naturally occurring oxidant in the environment, even in environmental water, although the dissolved silver would probably be adsorbed onto the particles (>0.45 mu m) in environmental water, mitigating the measurable levels of dissolved silver. The extent and rate of Ag2S-NP dissolution rose with the increasing concentration of MnO2. In addition, environmental factors including natural organic matter, inorganic salts and organic acids could accelerate the Ag2S-NP dissolution by MnO2, wherein an increase in dissolution extent was also observed. We further documented that Ag2S-NP dissolution by MnO2 was highly dependent on O-2 and it was an oxidative dissolution, with the production of SO4.2- Finally, dissolution of Ag2S-NP by MnO2 affected zebra fish (Danio rerio) embryo viability, showing significant reduction in embryo survival and hatching rates, compared to embryos exposed to Ag2S-NP, MnO2 or dissolved manganese alone. These findings would further shed light on the stability of Ag2S-NP in the natural environment - essential for comprehensive nano risk assessment. (C) 2018 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41029]
专题	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
推荐引用方式 GB/T 7714	Zhang, Hangjun,Wimmer, Andreas,Shi, En,et al. Re-evaluation of stability and toxicity of silver sulfide nanoparticle in environmental water: Oxidative dissolution by manganese oxide[J]. ENVIRONMENTAL POLLUTION,2018,243:1242-1251.
APA	Zhang, Hangjun.,Wimmer, Andreas.,Shi, En.,Liu, Qian.,Yang, Xuezhi.,...&Li, Lingxiangyu.(2018).Re-evaluation of stability and toxicity of silver sulfide nanoparticle in environmental water: Oxidative dissolution by manganese oxide.ENVIRONMENTAL POLLUTION,243,1242-1251.
MLA	Zhang, Hangjun,et al."Re-evaluation of stability and toxicity of silver sulfide nanoparticle in environmental water: Oxidative dissolution by manganese oxide".ENVIRONMENTAL POLLUTION 243(2018):1242-1251.