Uptake and Transformation of Silver Nanoparticles and Ions by Rice Plants Revealed by Dual Stable Isotope Tracing
文献类型：期刊论文
| 作者 | Yang, Qingqing; Shan, Wanyu; Hu, Ligang; Zhao, Yao; Hou, Yinzhu; Yin, Yongguang; Liang, Yong; Wang, Fuyi; Cai, Yong; Liu, Jingfu |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2019-01-15 |
| 卷号 | 53期号:2页码:625-633 |
| ISSN号 | 0013-936X |
| 英文摘要 | Knowledge on the uptake and transformation of silver nanoparticles (AgNPs) and Ag+ ions by organisms is critical for understanding their toxicity. Herein, the differential uptake, transformation, and translocation of AgNPs and Ag+ ions in hydroponic rice (Oryza sativa L.) is assessed in modified Hewitt (with Cl- ions, HS(Cl)) and Hogland solutions (without Cl- ions, HS) using dual stable isotope tracing ((AgNO3)-Ag-107 and (109)AgNPs). After coexposure to Ag-107(+) ions and (109)AgNPs at 50 mu g L-1 (as Ag for both) for 14 days, a stimulatory effect was observed on root elongation (increased by 68.8 and 71.9% for HS(Cl) and HS, respectively). Most of the Ag+ ions (from Ag-107(+) ions and (109)AgNPs) were retained on the root surface, while the occurrence of AgNPs (from 109AgNPs and Ag-107(+) ions) was observed in the root, suggesting the direct uptake of AgNPs and/or reduction of Ag+ ions. Higher fractions of Ag+ ions in the shoot suggest an in vivo oxidation of AgNPs. These results demonstrated the intertransformation between Ag+ ions and AgNPs and the role of AgNPs as carriers and sources of Ag+ ions in organisms, which is helpful for understanding the fate and toxicology of Ag. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/43051]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Florida Int Univ, Dept Chem & Biochem, Miami, FL 33199 USA 2.Chinese Acad Sci, Natl Ctr Mass Spectrometry Beijing, Beijing Natl Lab Mol Sci,CAS Res Educ Ctr Excelle, Inst Chem,CAS Key Lab Analyt Chem Living Biosyst, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 4.Jianghan Univ, Inst Environm & Hlth, Wuhan 430056, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Qingqing,Shan, Wanyu,Hu, Ligang,et al. Uptake and Transformation of Silver Nanoparticles and Ions by Rice Plants Revealed by Dual Stable Isotope Tracing[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2019,53(2):625-633. |
| APA | Yang, Qingqing.,Shan, Wanyu.,Hu, Ligang.,Zhao, Yao.,Hou, Yinzhu.,...&Pang, Guibin.(2019).Uptake and Transformation of Silver Nanoparticles and Ions by Rice Plants Revealed by Dual Stable Isotope Tracing.ENVIRONMENTAL SCIENCE & TECHNOLOGY,53(2),625-633. |
| MLA | Yang, Qingqing,et al."Uptake and Transformation of Silver Nanoparticles and Ions by Rice Plants Revealed by Dual Stable Isotope Tracing".ENVIRONMENTAL SCIENCE & TECHNOLOGY 53.2(2019):625-633. |
入库方式： OAI收割
来源：生态环境研究中心
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