中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 高能物理研究所
  3. 中国科学院高能物理研究所
  4. 多学科研究中心
Toxicity of cerium and thorium on Daphnia magna

文献类型：期刊论文

;
作者Ma YH(马宇辉); Ma, YH; Wang, JK; Peng, C; Ding, YY; He, X; Zhang, P; Li, N; Lan, T; Wang, DQ
刊名ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY ; ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
出版日期2016 ; 2016
卷号134期号:1页码:226-232
关键词Cerium Cerium Thorium Chemical speciation Acute toxicity Chronic toxicity Daphnia magna Thorium Chemical speciation Acute toxicity Chronic toxicity Daphnia magna
ISSN号0147-6513
DOI10.1016/j.ecoenv.2016.09.006 ; 10.1016/j.ecoenv.2016.09.006
通讯作者张智勇 ; 张智勇
文献子类Article
英文摘要Cerium (Ce) and thorium (Th) are always thought to be chemically similar and have comparable toxic properties on living organisms. In the present study, the acute and chronic toxicity of these two elements to freshwater crustacean Daphnia magna were investigated in the modified reconstituted water (6 mg/L KCI, 123 mg/L MgSO4 . 7H(2)O, and 294 mg/L CaCl2 . 2H(2)O in Milli-Q water, pH 7.8). It seemed that Ce and Th had comparable acute toxicity on Daphnia: 24/48 h EC50 for Th and Ce were 7.3/4.7 mu M and 16.4/10.7 mu M, respectively. However, Ce was present as soluble ions while all of Th was present as particulate ThO2 in the exposure medium. Considering their different chemical forms and bioavailability, the toxic mechanisms of Ce3+ and ThO2 on Daphnia would be totally different. To our knowledge, this is the first time to investigate the aquatic toxicity of thorium and cerium based on their actual chemical speciation in the exposure medium. The results also suggest that more attention should be paid on the detrimental effect of Th in the form of particulate ThO2. (C) 2016 Elsevier Inc. All rights reserved.; Cerium (Ce) and thorium (Th) are always thought to be chemically similar and have comparable toxic properties on living organisms. In the present study, the acute and chronic toxicity of these two elements to freshwater crustacean Daphnia magna were investigated in the modified reconstituted water (6 mg/L KCI, 123 mg/L MgSO4 . 7H(2)O, and 294 mg/L CaCl2 . 2H(2)O in Milli-Q water, pH 7.8). It seemed that Ce and Th had comparable acute toxicity on Daphnia: 24/48 h EC50 for Th and Ce were 7.3/4.7 mu M and 16.4/10.7 mu M, respectively. However, Ce was present as soluble ions while all of Th was present as particulate ThO2 in the exposure medium. Considering their different chemical forms and bioavailability, the toxic mechanisms of Ce3+ and ThO2 on Daphnia would be totally different. To our knowledge, this is the first time to investigate the aquatic toxicity of thorium and cerium based on their actual chemical speciation in the exposure medium. The results also suggest that more attention should be paid on the detrimental effect of Th in the form of particulate ThO2. (C) 2016 Elsevier Inc. All rights reserved.
电子版国际标准刊号1090-2414
WOS关键词RARE-EARTH ; CARBONATE COMPLEXES ; HYDROUS OXIDE ; LANTHANUM ; SOLUBILITY ; GROWTH ; IONS
语种英语 ; 英语
WOS记录号WOS:000385607400027 ; WOS:000385607400027
源URL[http://ir.ihep.ac.cn/handle/311005/260460]  
专题高能物理研究所_多学科研究中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714		 Ma YH,Ma, YH,Wang, JK,et al. Toxicity of cerium and thorium on Daphnia magna, Toxicity of cerium and thorium on Daphnia magna[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2016, 2016,134, 134(1):226-232, 226-232.
APA 马宇辉.,Ma, YH.,Wang, JK.,Peng, C.,Ding, YY.,...&张智勇.(2016).Toxicity of cerium and thorium on Daphnia magna.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,134(1),226-232.
MLA 马宇辉,et al."Toxicity of cerium and thorium on Daphnia magna".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 134.1(2016):226-232.

入库方式： OAI收割

来源：高能物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。