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DOI | 10.1016/j.scitotenv.2016.02.190 |
Anaerobic toxicity of cationic silver nanoparticles | |
Gitipour, Alireza1; Thiel, Stephen W.1; Scheckel, Kirk G.2; Tolaymat, Thabet2 | |
发表日期 | 2016-07-01 |
ISSN | 0048-9697 |
卷号 | 557页码:363-368 |
英文摘要 | The microbial toxicity of silver nanoparticles (AgNPs) stabilized with different capping agents was compared to that of Ag+ under anaerobic conditions. Three AgNPs were investigated: (1) negatively charged citrate-coated AgNPs (citrate-AgNPs), (2) minimally charged polyvinylpyrrolidone coated AgNPs (PVP-AgNPs) and (3) positively charged branched polyethyleneimine coated AgNPs (BPEI-AgNPs). The AgNPs investigated in this experiment were similar in size (10-15 nm), spherical in shape, but varied in surface charge which ranged from highly negative to highly positive. While, at AgNPs concentrations lower than 5 mg L-1, the anaerobic decomposition process was not influenced by the presence of the nanoparticles, there was an observed impact on the diversity of the microbial community. At elevated concentrations (100 mg L-1 as silver), only the cationic BPEI-AgNPs demonstrated toxicity similar in magnitude to that of Ag+. Both citrate and PVP-AgNPs did not exhibit toxicity at the 100 mg L-1 as measured by biogas evolution. These findings further indicate the varying modes of action for nanoparticle toxicity and represent one of the few studies that evaluate end-of-life management concerns with regards to the increasing use of nanomaterials in our everyday life. These findings also highlight some of the concerns with a one size fits all approach to the evaluation of environmental health and safety concerns associated with the use of nanoparticles. Published by Elsevier B.V. |
英文关键词 | Silver nanoparticles;Anaerobic digestion;Dissolution;Stabilization mechanism;Anaerobic toxicity |
语种 | 英语 |
WOS记录号 | WOS:000375136200038 |
来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
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来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/57425 |
作者单位 | 1.Univ Cincinnati, Biomed Chem & Environm Engn, Cincinnati, OH USA; 2.US EPA, Off Res & Dev, 26 West Martin Luther King Dr, Cincinnati, OH 45224 USA |
推荐引用方式 GB/T 7714 | Gitipour, Alireza,Thiel, Stephen W.,Scheckel, Kirk G.,et al. Anaerobic toxicity of cationic silver nanoparticles[J]. 美国环保署,2016,557:363-368. |
APA | Gitipour, Alireza,Thiel, Stephen W.,Scheckel, Kirk G.,&Tolaymat, Thabet.(2016).Anaerobic toxicity of cationic silver nanoparticles.SCIENCE OF THE TOTAL ENVIRONMENT,557,363-368. |
MLA | Gitipour, Alireza,et al."Anaerobic toxicity of cationic silver nanoparticles".SCIENCE OF THE TOTAL ENVIRONMENT 557(2016):363-368. |
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