Differential Effects of Graphene and Graphene Oxide on Copper Toxicity to Daphnia magna
As an excellent member of carbon nanomaterials, graphene materials have been widely studied in recent years.Some researchers reported that graphene materials can cause harmful effects on aquatic organisms, such as Daphnia magna, Zebrafish and Amphibalanusamphitrite larvae.However, the combined effects of graphene materials with other contaminants such as heavy metals,which may bring about more serious effects than graphene materials alone, have seldom been explored.Surface oxygenic functional groups are a main factor affecting the surface properties and sorption behaviour of graphene materials, and the surface properties and sorption behaviour of graphene materials could further affect their interactions with heavy metals.Herein, the effects of pristine graphene (GN) and graphene oxide (GO, the functionalized form of GN which contains numerous reactive oxygen functional groups)on Cu toxicity were compared to provide an opportunity to explore the comparative effects particularly originated by surface oxygenic functional group.D.magna is a typical model organism for toxicological research and was selected as the test receptor.Biomarkers of metallothionein (MT), superoxide dismutase (SOD), glutathione peroxidase (GSH-PX) and malondialdehyde (MDA)were measured to assess the toxic effects.
LIU Yingying FAN Wenhong
School of Space and Environment, Beihang University, Beijing 100191, P.R.China
国际会议
The 2017 International Symposium on Environmental Science and Technology (2017环境科学与技术国际会议)
北京
英文
112-113
2017-09-19（万方平台首次上网日期，不代表论文的发表时间）