期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 283, 期 -, 页码 110-116出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2014.09.017
关键词
ZnO QDs stability; Zn2(+)tioavailability; QDs toxicity; Escherichia coli; Cupriavidus metallidurans
资金
- Agence Nationale pour la Recherche
- Zone Atelier Moselle
The toxicity of quantum dots (QDs) has been commonly attributed to the release of metal ions from the core as well as to the production of reactive oxygen species. However, the information related to the stability of the nanoparticles are relatively scarce although this parameter may strongly influence their toxicity. The stability of aminosilane-capped ZnO QDs, here used as model nanoparticles, was investigated by inductively coupled plasma-optical emission spectrometer (ICP-OES) and whole cell biosensors using a dialysis setup to separate the QDs from the leaked Zn2+ ions. The integrity of the ZnO QDs appeared strongly affected by their dilution in aqueous medium, whereas the nanoparticles were slightly stabilized by bacteria. Our results demonstrate some inadequacy between the implementation and use of whole cell biosensors, and the monitoring of metal release from QDs. (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据