作者
Bin Huang, Zhong-Bo Wei, Liu-Yan Yang, Ke Pan, Ai-Jun Miao
发表日期
2019/3/18
期刊
Environmental science & technology
卷号
53
期号
7
页码范围
3871-3879
出版商
American Chemical Society
简介
In the natural environment, the interactions of different types of nanoparticles (NPs) may alter their toxicity, thus masking their true environmental effects. This study investigated the toxicity of silver NPs (AgNPs) combined with hematite (HemNPs) or polystyrene (PsNPs) NPs toward the freshwater algae Chlamydomonas reinhardtii and Ochromonas danica. The former has a cell wall and cannot internalize these NPs, while the latter without a cell wall can. Therefore, the toxicity of AgNPs toward C. reinhardtii was attributed to the released Ag ions, while AgNPs had direct toxic effects on O. danica. Moreover, nontoxic HemNPs ameliorated AgNP toxicity toward C. reinhardtii, by decreasing the bioavailability of Ag ions through adsorption. Despite their role as Ag-ion carriers, HemNPs still reduced the toxicity of AgNPs toward O. danica by competitively inhibiting AgNP uptake. In both algae, Ag accumulation fully …
学术搜索中的文章
B Huang, ZB Wei, LY Yang, K Pan, AJ Miao - Environmental science & technology, 2019