臂尾轮属
体内
锐钛矿
活性氧
毒性
生物
环境化学
化学
生物化学
轮虫
光催化
生态学
有机化学
生物技术
催化作用
作者
Stella W.Y. Wong,Guang-Jie Zhou,Kevin W.H. Kwok,Wei Chen,Jeonghoon Han,Jae-Seong Lee,Kenneth M.Y. Leung
标识
DOI:10.1016/j.marpolbul.2020.110973
摘要
This study compared in vivo acute toxicities of nine engineered nano metal oxides to the marine diatom Skeletonema costatum and rotifer Brachionus koreanus. The sequence of their toxicities to S. costatum, based on growth inhibition, was: nano zinc oxide (nZnO) > nTiO2 (rutile) > nMgO > Annealed nMgO > nTiO2 (anatase) > γ-nAl2O3 > nIn2O3 > α-nAl2O3 > nSnO2. Similarly, nZnO was also the most toxic to B. koreanus, but the other nano metal oxides were non-lethal. nMgO and nZnO were confirmed to trigger reactive oxygen species (ROS) mediated toxicity to the two marine organisms, while nTiO2 (both anatase and rutile forms) likely induced oxidative stress as shown by their acellular ROS production. nZnO may also cause damage in the endocrine system of B. koreanus, as indicated by the increased transcription of retinoid X receptor. Annealed nMgO reduces its toxicity via removal of O2- and impurities from its surface.
科研通智能强力驱动
Strongly Powered by AbleSci AI