School of Resource and Environment Engineering, Anhui University, Hefei, 230601, People's Republic of China.
Department of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230601, People's Republic of China.
Environ Monit Assess. 2018 Oct 22;190(11):667. doi: 10.1007/s10661-018-7022-7.
Silver nanoparticles (AgNPs) have been increasingly used in a wide range of consumer products over the last decade. The release of AgNPs into aquatic ecosystems raises concerns about their safety and environmental toxicity, which have been the subject of recent studies. Herein, we assess the toxicity of AgNPs to the common algae Microcystis. aeruginosa. A toxicological response by M. aeruginosa was exhibited at an early stage of exposure to AgNPs, which were also toxic to its growth, photosynthetic, and membrane systems. The attachment of AgNPs to microalgae is likely the main mechanism by which it damages cell membranes. Dissolved Ag ions, originating from internalized AgNPs, seem to directly target the photosynthetic system. We also found that several humus-related indicators of water quality (HIX and β/α) were related to reduced AgNPs toxicity. Graphical abstract.
过去十年中，银纳米颗粒（AgNPs）在广泛的消费产品中得到了越来越多的应用。AgNPs 释放到水生生态系统中引起了人们对其安全性和环境毒性的关注，这是最近研究的主题。在此，我们评估了 AgNPs 对常见藻类铜绿微囊藻的毒性。铜绿微囊藻在暴露于 AgNPs 的早期就表现出了毒性反应，AgNPs 还会对其生长、光合作用和膜系统产生毒性。AgNPs 附着在微藻上可能是破坏细胞膜的主要机制。来自内化的 AgNPs 的溶解 Ag 离子似乎直接靶向光合作用系统。我们还发现，一些与腐殖质相关的水质指标（HIX 和β/α）与降低的 AgNPs 毒性有关。
