NDLI: The mechanism of chronic toxicity to <i>Daphnia magna</i> induced by graphene suspended in a water column

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Environmental Science: Nano Vol - 3 Issue - 5

Environmental Science: Nano Vol - 3 Issue - 4

Environmental Science: Nano Vol - 3 Issue - 3

Environmental Science: Nano Vol - 3 Issue - 2

Environmental Science: Nano Vol - 3 Issue - 1

Environmental Science: Nano Vol -2

Environmental Science: Nano Vol -1

The mechanism of chronic toxicity to Daphnia magna induced by graphene suspended in a water column

Content Provider	Royal Society of Chemistry (RSC)
Author	Fan, Wenhong Xu, Zhizhen Wang, Xiangrui Luo, Shenglian Liu, Yingying Li, Xiaomin
Copyright Year	2016
Abstract	Graphene (GN) is widely used in various applications. Thus, it is at risk of being released into aquatic environments. However, its toxicity to aquatic organisms, especially chronic toxicity, has not become a serious concern. This study assessed the acute and chronic toxicity of GN to Daphnia magna by comparing the toxic effects of GN with those of three other typical carbon nanomaterials (CNMs), fullerene (C60), single-walled carbon nanotube (SWCNT), and multi-walled carbon nanotube (MWCNT). Results indicated that GN promoted the growth and reproduction of daphnids at low concentrations, similar to the other three CNMs. This may be due to the adsorption of nutrient elements in the exposure medium by the CNMs with high surface areas, which increased the ingestion of nutrient elements by daphnids. At high concentrations, the four CNMs inhibited the growth and reproduction of the daphnids to different extents. The toxicity of GN was significantly higher than that of the other three CNMs, although GN bioaccumulation in D. magna was relatively lower. The special structure and substantial adsorption on the daphnids' surface may mainly explain the higher toxicity of GN to daphnids.
Starting Page	1405
Ending Page	1415
Page Count	11
File Format	HTM / HTML PDF
ISSN	20518153
Volume Number	3
Issue Number	6
Journal	Environmental Science: Nano
DOI	10.1039/c6en00361c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	GN Daphnia Graphene Carbon Nanomaterials Fullerene Carbon nanotube Adsorption Bioaccumulation
Content Type	Text
Resource Type	Article
Subject	Environmental Science Materials Science

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