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Comparative toxicity of nanoparticulate/bulk Yb2O3 and YbCl3 to cucumber (Cucumis sativus)
张鹏(多); Ma YH(马宇辉); Zhang ZY(张智勇); Zhang, P; Ma, YH; Zhang, ZY; He, X; Guo, Z; Tai, RZ; Ding, YY; Zhao, YL; Chai, ZF; He X(何潇); Ding YY(丁雅韵); Zhao YL(赵宇亮); Chai ZF(柴之芳)
2012
发表期刊ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷号46期号:3页码:1834-1841
摘要With the increasing utilization of nanomaterials, there is a growing concern for the potential environmental and health effects of them. To assess the environmental risks of nanomaterials, better knowledge about their fate and toxicity in plants are required. In this work, we compared the phytotoxicity of nanoparticulate Yb2O3, bulk Yb2O3, and YbCl3 center dot 6H(2)O to cucumber plants. The distribution and biotransformation of the three materials in plant roots were investigated in situ by TEM, EDS, as well as synchrotron radiation based methods: STXM and NEXAFS. The decrease of biomass was evident at the lowest concentration (0.32 mg/L) when exposed to nano-Yb2O3, while at the highest concentration, the most severe inhibition was from YbCl3. The inhibition was dependent on the actual amount of toxic Yb uptake by the cucumber plants. In the intercellular regions of the roots, Yb2O3 particles and YbCl3 were all transformed to YbPO4. We speculate that the dissolution of Yb2O3 particles induced by the organic acids exuded from roots played an important role in the phytotoxicity. Only under the nano-Yb2O3 treatment, YbPO4 deposits were found in the cytoplasm of root cells, so the phytotoxicity might also be attributed to the Yb internalized into the cells.
学科领域Engineering; Environmental Sciences & Ecology
DOI10.1021/es2027295
收录类别SCI
WOS记录号WOS:000299864400070
引用统计
被引频次:50[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224172
专题院士
多学科研究中心
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GB/T 7714
Zhang P,Ma YH,Zhang ZY,et al. Comparative toxicity of nanoparticulate/bulk Yb2O3 and YbCl3 to cucumber (Cucumis sativus)[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2012,46(3):1834-1841.
APA 张鹏.,马宇辉.,张智勇.,Zhang, P.,Ma, YH.,...&柴之芳.(2012).Comparative toxicity of nanoparticulate/bulk Yb2O3 and YbCl3 to cucumber (Cucumis sativus).ENVIRONMENTAL SCIENCE & TECHNOLOGY,46(3),1834-1841.
MLA 张鹏,et al."Comparative toxicity of nanoparticulate/bulk Yb2O3 and YbCl3 to cucumber (Cucumis sativus)".ENVIRONMENTAL SCIENCE & TECHNOLOGY 46.3(2012):1834-1841.
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