Effects of Mineral Compositions on Matrix Diffusion and Sorption of Se-75(IV) in Granite
文献类型：期刊论文
| 作者 | Yang, Xiaoyu1; Ge, Xiangkun2; He, Jiangang1; Wang, Chunli1,3; Qi, Liye1; Wang, Xiangyun1; Liu, Chunli1 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2018-02-06 |
| 卷号 | 52期号:3页码:1320-1329 |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.7b05795 |
| 英文摘要 | Exploring the migration behaviors of selenium in granite is critical for the safe disposal of radioactive waste. The matrix diffusion and sorption of Se-75(IV) (analogue for Se-79) in granite were systematically studied to set reliable parameters in this work. Through-diffusion and batch sorption experiments were conduct with four types of Beishan granite. The magnitudes of the obtained apparent diffusion coefficient (D-a) values are of the following order: monzogranite > granodiorite-2 > granodiorite-1, which is opposite to the sequence of the K-d values obtained from both the diffusion model and batch sorption experiments. The EPMA results of the granitic flakes showed that there was no obvious enrichment of Se(IV) on quartz, microcline and albite. Only biotite showed a weak affinity for Se(IV). Macroscopic sorption behaviors of Se(IV) on the four types of granite were identical with the sequence of the granitic biotite contents. Quantitative fitting results were also provided. XPS and XANES spectroscopy data revealed that bidentate inner-sphere complexes were formed between Se(IV) and Fe(III). Our results indicate that biotite can be representative of the Se(IV) sorption in complex mineral assemblages such as granite, and the biotite contents are critically important to evaluate Se(IV) transport in granite. |
| 语种 | 英语 |
| WOS记录号 | WOS:000424851700044 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45675]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liu, Chunli |
| 作者单位 | 1.Peking Univ, Coll Chem & Mol Engn, Fundamental Sci Lab Radiochem & Radiat Chem, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 2.Beijing Res Inst Uranium Geol, Analt Lab, Beijing 100029, Peoples R China 3.Nucl & Radiat Safety Ctr, Beijing 100082, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Xiaoyu,Ge, Xiangkun,He, Jiangang,et al. Effects of Mineral Compositions on Matrix Diffusion and Sorption of Se-75(IV) in Granite[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2018,52(3):1320-1329. |
| APA | Yang, Xiaoyu.,Ge, Xiangkun.,He, Jiangang.,Wang, Chunli.,Qi, Liye.,...&Liu, Chunli.(2018).Effects of Mineral Compositions on Matrix Diffusion and Sorption of Se-75(IV) in Granite.ENVIRONMENTAL SCIENCE & TECHNOLOGY,52(3),1320-1329. |
| MLA | Yang, Xiaoyu,et al."Effects of Mineral Compositions on Matrix Diffusion and Sorption of Se-75(IV) in Granite".ENVIRONMENTAL SCIENCE & TECHNOLOGY 52.3(2018):1320-1329. |
入库方式： OAI收割
来源：化学研究所
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