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Toxicity of cerium and thorium on Daphnia magna
Ma YH(马宇辉); Ma, YH; Wang, JK; Peng, C; Ding, YY; He, X; Zhang, P; Li, N; Lan, T; Wang, DQ; Zhang, ZH; Sun, FH; Liao, HQ; Zhang, ZY; Ding YY(丁雅韵); He X(何潇); Zhang P(张鹏); Li N(李娜); Lan T(兰图); Wang DQ(王东琪); Zhang ZY(张智勇)
2016
Source PublicationECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
ISSN0147-6513
EISSN1090-2414
Volume134Issue:1Pages:226-232
Corresponding Author张智勇
SubtypeArticle
AbstractCerium (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.
KeywordCerium Thorium Chemical speciation Acute toxicity Chronic toxicity Daphnia magna
DOI10.1016/j.ecoenv.2016.09.006
WOS KeywordRARE-EARTH ; CARBONATE COMPLEXES ; HYDROUS OXIDE ; LANTHANUM ; SOLUBILITY ; GROWTH ; IONS
Indexed BySCI
Language英语
WOS SubjectEnvironmental Sciences ; Toxicology
WOS IDWOS:000385607400027
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/260460
Collection多学科研究中心
Affiliation中国科学院高能物理研究所
Recommended Citation
GB/T 7714
Ma YH,Ma, YH,Wang, JK,et al. Toxicity of cerium and thorium on Daphnia magna[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2016,134(1):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.
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