Toxicological effects of microplastics and heavy metals on the Daphnia magna
文献类型：期刊论文
| 作者 | Yuan, Wenke2,5; Zhou, Yanfei2,5; Chen, Yuling2,5; Liu, Xiaoning4; Wang, Jun1,3 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-12-01 |
| 卷号 | 746页码:10 |
| 关键词 | Microplastics Metal ions Adsorption Combined toxicity Daphnia magna |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.141254 |
| 英文摘要 | Microplastics (MPs) are gradually spreading around the world and becoming a ubiquitous environmental contamination in aquatic environments. Due to its unique physicochemical properties, MPs are considered to be strong adsorbents for environmental pollutants and may affect their fate and toxicity in the environment. In this study, the adsorption behaviors of four typical heavy metal ions (Pb2+, Cu2+, Cd2+, and Ni2+) on two sizes of polystyrene MPs (10 mu m and 50 mu m) were investigated based on batch experiments, and the combined effects of heavy metals and MPs were assessed using Daphnia magna as model. The results showed that smaller MPs (SMPs) exhibited higher adsorption capacities for metal ions (0.261-0.579 mg/g) than that of the larger MPs (LMPs) (0.243-0.525 mg/g), and the affinity sequence of heavy metals on MPs is Pb2+ > Cu2+ > Cd2+ > Ni2+. There are better admirable agreements for pseudo-second-order model and Langmuir model to fit the adsorption kinetics and adsorption isotherms, respectively. Additionally, the combined toxicity of MPs and heavy metals was negatively correlated with the adsorption capacity between them. The combined effects of mixtures toward D. magna changed from antagonism to additive effect with increasing MPs concentrations, and SMPs exhibited higher toxicological risk than LMPs. Our findings compared the accumulative effects of various heavy metals on MPs and can contribute to understanding the combined effects of plastics and heavy metals on biota. (C) 2020 Elsevier B.V. All rights reserved. |
| 资助项目 | Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2018) ; National Key Research and Development Program of China[2018YFD0900604] ; Key Research Projects of Universities in Guangdong Province[2019KZDXM003] ; Key Research Projects of Universities in Guangdong Province[2020KZDZX1040] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000579371300108 |
| 出版者 | ELSEVIER |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/15929]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Wang, Jun |
| 作者单位 | 1.Hainan Normal Univ, Coll Life Sci, Minist Educ, Key Lab Ecol Trop Isl, Haikou 571158, Hainan, Peoples R China 2.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China 3.South China Agr Univ, Coll Marine Sci, Joint Lab Guangdong Prov & Hong Kong Reg Marine B, Guangzhou 510642, Peoples R China 4.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Inst HydroEcol, Wuhan 430072, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Wenke,Zhou, Yanfei,Chen, Yuling,et al. Toxicological effects of microplastics and heavy metals on the Daphnia magna[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,746:10. |
| APA | Yuan, Wenke,Zhou, Yanfei,Chen, Yuling,Liu, Xiaoning,&Wang, Jun.(2020).Toxicological effects of microplastics and heavy metals on the Daphnia magna.SCIENCE OF THE TOTAL ENVIRONMENT,746,10. |
| MLA | Yuan, Wenke,et al."Toxicological effects of microplastics and heavy metals on the Daphnia magna".SCIENCE OF THE TOTAL ENVIRONMENT 746(2020):10. |
入库方式： OAI收割
来源：武汉植物园
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