Acute toxicity of cerium to neonatal Daphnia magna: Responses of antioxidant systems, influence of environmental factors and development of a biotic ligand model
文献类型：期刊论文
| 作者 | Zhang, Kaibo1; Zhang, Ruiqing1; Liu, Shuai1; Li, Yue1; Guo, Guanghui2; Li, Huixian3; Shao, Shuai1 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2024-03-20 |
| 卷号 | 917页码:12 |
| 关键词 | Rare earth element Bioavailability Ecotoxicity Chemical speciation Natural organic matter |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2024.170441 |
| 通讯作者 | Zhang, Ruiqing(zhangruiqing@imu.edu.cn) |
| 英文摘要 | The bioavailability of cerium (Ce) and its toxic effects on aquatic organisms are still unclear, which limits the toxicity prediction and pollution control for this element. Here, the acute toxicity of Ce to Daphnia magna neonates and the responses of the antioxidant system were investigated, and the quantitative relationships between the toxicity of Ce and environmental factors were determined. The 24 and 48 h EC50Ce-D values based on the dissolved concentration of Ce in Daphnia magna were 60.6 and 10.9 mu M, respectively, and the EC50Ce3+ values were 23.4 and 3.73 mu M, respectively. After Ce exposure at environmentally relevant concentrations (0.5-3.5 mu M), significant increases in superoxide dismutase activity and malondialdehyde content were observed in Daphnia magna, while significant decreases in catalase activity and H2O2 content occurred. Low levels of Ce cause oxidative damage to Daphnia magna and adverse impacts on the antioxidant system; however, further molecularbased studies are needed. The addition of Ca2+ or Na+ reduced the acute toxicity of Ce to Daphnia magna. In contrast, Mg2+ (MgSO4) promoted Ce toxicity, which is a new finding related to the interaction effects between cations and rare earth elements on biological ligands; however, the effects of SO42+ could not be distinguished. Complexation with organic ligands could significantly reduce the toxicity of Ce to Daphnia magna; however, complexes of Ce with citric acid and malic acid might be bioavailable to Daphnia magna. In the absence of organic ligands and competing metals, the binding constant of Ce3+ to Daphnia magna at toxic concentrations was 5.83. The log K values for the competitive effects of Ca2+ and Na+ were 3.73 and 2.59, respectively, while the log K value for the protective effect of fulvic acid was 3.76. These results contribute to understanding the toxicity of Ce and will help predict the toxicity of Ce in freshwater. |
| WOS关键词 | RARE-EARTH-ELEMENTS ; DISSOLVED ORGANIC-MATTER ; FRESH-WATER ; HYALELLA-AZTECA ; GREEN-ALGA ; OXIDE NANOPARTICLES ; BIOAVAILABILITY ; SPECIATION ; LANTHANUM ; COMPLEXATION |
| 资助项目 | National Natural Science Foundation of China[41977270] ; National Natural Science Foundation of China[41807343] ; Inner Mongolia Natural Science Foundation[2018MS4011] ; Inner Mongolia Natural Science Foundation[2023MS04009] ; Program for Innovative Research Team in Universities of Inner Mongolia Autonomous Region[NMGIRT2321] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001176897000001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Inner Mongolia Natural Science Foundation ; Program for Innovative Research Team in Universities of Inner Mongolia Autonomous Region |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/203486]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Ruiqing |
| 作者单位 | 1.Inner Mongolia Univ, Sch Ecol & Environm, Hohhot 010021, Inner Mongolia, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Kaibo,Zhang, Ruiqing,Liu, Shuai,et al. Acute toxicity of cerium to neonatal Daphnia magna: Responses of antioxidant systems, influence of environmental factors and development of a biotic ligand model[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,917:12. |
| APA | Zhang, Kaibo.,Zhang, Ruiqing.,Liu, Shuai.,Li, Yue.,Guo, Guanghui.,...&Shao, Shuai.(2024).Acute toxicity of cerium to neonatal Daphnia magna: Responses of antioxidant systems, influence of environmental factors and development of a biotic ligand model.SCIENCE OF THE TOTAL ENVIRONMENT,917,12. |
| MLA | Zhang, Kaibo,et al."Acute toxicity of cerium to neonatal Daphnia magna: Responses of antioxidant systems, influence of environmental factors and development of a biotic ligand model".SCIENCE OF THE TOTAL ENVIRONMENT 917(2024):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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