Pu(Ⅲ)、Pu(Ⅳ)、Pu(Ⅴ)和Pu(Ⅵ)在自然水的pH和Eh(氧化还原电势)值范围内能够共存.在自然环境中主要以Pu(Ⅴ)的PuO2(H2O)n+和Pu(Ⅳ)的Pu(OH)4形式存在.采用静态法测定了Pu(Ⅳ)和Pu(Ⅴ)在砂土介质中的分配系数Kd,Pu(Ⅳ)和Pu(Ⅴ)在砂土中的分配系数范围分别为5.5×103～4×104mL/g和3.2×103～1.1×104mL/g.表明在砂土介质中Pu(Ⅳ)的分配系数(Kd)大于Pu(Ⅴ)的,并且分配系数随砂土介质中粘土矿物含量的增加及介质颗粒粒径减小而增大.
参考文献
| [1] | Brian A P,Robert A F,John T C,Daniel I K,et al.Plutonium Oxidation State Geochemistry in the SRS Subsurface Environment.WSRC -TR-2003-00035,2002. |
| [2] | LI Shushen,WANG Zhiming.The Study of Migration of 237Np,238Pu,241 Am and 90Sr in Unsaturated Zone,Aquifer and Engineered Barrier Material[M].Beijing:Atomic Energy Press,2005:245-271 (in Chinese).李书绅,王志明.237Np,238Pu,241Am和90Sr在包气带黄土、含水层和工程屏障材料中迁移规律研究[M].北京:原子能出版社,2005:245-271. |
| [3] | Toshihiko Ohnuki,Hisao Aoyagi,Yoshihiro Kitatsuji,et al.Plutonium (Ⅵ) Accumulation and Reduction by Lichen Biomass:Correlation with U (Ⅵ)[J].J Environ Ralioact,2004,77:339-353. |
| [4] | AH H Nesmeyanov,Auth.Radiochemistry Experiment Textbook[M].HUANG Changtai,HE Yaming,WEI Liansheng Trans.Beijing:Atomic Energy Published,1980:227-230(in Chinese).AH H Nesmeyanov著.[M].黄昌泰,何亚明,魏连生,译.北京:原子能出版社,1980:227-230. |
| [5] | Relyea J F,Serne R J,Rai D.Standard Method Used at Pacific Northwest National Laboratory for Measuring Laboratory Batch Kd Values[S].Washington:Pacific Northwest National Laboratory,Richland,1980. |
| [6] | Brian A P,Martine C D,Daniel I K,et al.Plutonium Oxidation and Subsequent Reduction by Mn(Ⅳ) Minerals in Yucca Mountain Tuff[J].Environ Sci Technol,2006,40:3508 -3514. |
| [7] | Choppin G R.Actinide Speciation in Aquatic Systems[J].Mar Chem,2006,99:83-92. |
| [8] | Lu N,Triay I R,Cotter C R,et al.Reversibility of Sorption of Plutonium-239 onto Colloids of Hematite,Goethite,Smectite and Silica.A Milestone Final Report of YMP July 10[C],1998,LA-UR-98-3057. |
| [9] | Kersting A B,Reimus P W.Colloid-Facilitated Transport of Low-Solubility Radionuclides:A Field,Experimental,and Modeling Invesigation,Chapter 5:Sorption of Pu(Ⅴ) on Mineral Colloids.UCRL-ID-149688[C],2003. |
| [10] | Fjelda R A,Serkiz S M,McGinnis P L,et al.Evaluation of a Conceptual Model for the Subsurface Transport of Plutonium Involving Surface Mediated Reduction of Pu(Ⅴ) to Pu(Ⅳ)[J].J Contam Hydrol,2003,67:79-94. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%