Using of chelating resin to study the kinetic desorption of Eu(III) from humic acid-Al2O3 colloid surfaces
文献类型：期刊论文
| 作者 | Wang, XK; Zhou, X; Du, JZ; Hu, WP; Chen, CL; Chen, YX |
| 刊名 | SURFACE SCIENCE
 |
| 出版日期 | 2006-01-15 |
| 卷号 | 600期号:2页码:478-483 |
| 关键词 | Chelating Resin Humic Acid Gamma-al2o3 Eu(Iii) Kinetic Desorption |
| ISSN号 | 0039-6028 |
| DOI | 10.1016/j.susc.2005.10.045 |
| 英文摘要 | The association of organic-inorganic colloid-borne trace elements was investigated. Radionuclide (152+154) Eu(III) was chosen as a representative and chemical homologue for trivalent lanthanide and actinide ions present in radioactive nuclear waste. Effect of pH and contact time of organic-inorganic/Eu(III) on the kinetic dissociation of Eu (III) from HA-Al2O3 colloids was studied. The kinetic desorption behavior of sorbed (152+154) Eu(III) from humic acid-gamma-Al2O3 colloids was studied at pH values of 4.5 +/- 0.2, 5.3 +/- 0.2 and 6.5 +/- 0.2, respectively, by the addition of the chelating resin. The experimental results suggest that the fractions of irreversible sorption of radio-nuclide (152+154) Eu(III) to HA-Al2O3 colloids increase with increasing pH values, and are independent of aging time. At least two different species, "weak" and "strong" dissociation fractions, are required to simulate the kinetic desorption of (152+154) Eu(III) from HA-Al2O3 colloids. The species of Eu(III) sorbed on HA-Al2O3 colloids move from "weak" sites to "strong" sites with increasing aging time, whereas the fractions of irreversible sorption are independent of aging time. The results are important for the evaluation of radionuclides' behavior in the environment. (c) 2005 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000235541100032 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/58065]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, XK |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 2.E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 20062, Peoples R China 3.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, XK,Zhou, X,Du, JZ,et al. Using of chelating resin to study the kinetic desorption of Eu(III) from humic acid-Al2O3 colloid surfaces[J]. SURFACE SCIENCE,2006,600(2):478-483. |
| APA | Wang, XK,Zhou, X,Du, JZ,Hu, WP,Chen, CL,&Chen, YX.(2006).Using of chelating resin to study the kinetic desorption of Eu(III) from humic acid-Al2O3 colloid surfaces.SURFACE SCIENCE,600(2),478-483. |
| MLA | Wang, XK,et al."Using of chelating resin to study the kinetic desorption of Eu(III) from humic acid-Al2O3 colloid surfaces".SURFACE SCIENCE 600.2(2006):478-483. |
入库方式： OAI收割
来源：化学研究所
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