Experimental study on the fractionation of yttrium from holmium during the coprecipitation with calcium carbonates in seawater solutions
文献类型：期刊论文
| 作者 | Qu, Chengli1,2,3; Liu, Gang1,3 ; Zhao, Yongfang1,3
|
| 刊名 | GEOCHEMICAL JOURNAL
 |
| 出版日期 | 2009 |
| 卷号 | 43期号:6页码:403-414 |
| 关键词 | Partitioning Fractionation Calcium Carbonates Seawater Y/ho Ratios Covalency |
| ISSN号 | 0016-7002 |
| 文献子类 | Article |
| 英文摘要 | The partitioning of Y and Ho between CaCO3 (calcite and aragonite respectively) and seawater was experimentally investigated at 25 degrees C and I atm. Both Y and Ho were observed to be strongly partitioned into the overgrowths of calcite or aragonite. Their partition coefficients, D-Y and D-Ho, were determined to be similar to 520-1400 and similar to 700-1900 in calcite, similar to 1200-2400 and similar to 2400-4300 in aragonite, respectively. Y fractionates from Ho during the coprecipitation with either calcite or aragonite. Within our experimental conditions, the fractionation factor, k = D-Y/D-Ho, was determined to be similar to 0.62-0.77 in calcite and similar to 0.50-0.57 in aragonite, respectively. The aqueous complexation of Y and Ho, which is a function of solution chemistry, probably plays an important role in both the partitioning and the fractionation. Further analyses suggest that the difference in covalency between Y and Ho associated with changes in their coordination environments is the determinant factor to the Y-Ho fractionation in the H2CO3-CaCO3 System.; The partitioning of Y and Ho between CaCO3 (calcite and aragonite respectively) and seawater was experimentally investigated at 25 degrees C and I atm. Both Y and Ho were observed to be strongly partitioned into the overgrowths of calcite or aragonite. Their partition coefficients, D-Y and D-Ho, were determined to be similar to 520-1400 and similar to 700-1900 in calcite, similar to 1200-2400 and similar to 2400-4300 in aragonite, respectively. Y fractionates from Ho during the coprecipitation with either calcite or aragonite. Within our experimental conditions, the fractionation factor, k = D-Y/D-Ho, was determined to be similar to 0.62-0.77 in calcite and similar to 0.50-0.57 in aragonite, respectively. The aqueous complexation of Y and Ho, which is a function of solution chemistry, probably plays an important role in both the partitioning and the fractionation. Further analyses suggest that the difference in covalency between Y and Ho associated with changes in their coordination environments is the determinant factor to the Y-Ho fractionation in the H2CO3-CaCO3 System. |
| 学科主题 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000273869600002 |
| 公开日期 | 2010-12-22 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/3693]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 海洋研究所_实验海洋生物学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Yantai Inst Costal Zone Res Sustainable Dev, Yantai 264003, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qu, Chengli,Liu, Gang,Zhao, Yongfang. Experimental study on the fractionation of yttrium from holmium during the coprecipitation with calcium carbonates in seawater solutions[J]. GEOCHEMICAL JOURNAL,2009,43(6):403-414. |
| APA | Qu, Chengli,Liu, Gang,&Zhao, Yongfang.(2009).Experimental study on the fractionation of yttrium from holmium during the coprecipitation with calcium carbonates in seawater solutions.GEOCHEMICAL JOURNAL,43(6),403-414. |
| MLA | Qu, Chengli,et al."Experimental study on the fractionation of yttrium from holmium during the coprecipitation with calcium carbonates in seawater solutions".GEOCHEMICAL JOURNAL 43.6(2009):403-414. |
入库方式： OAI收割
来源：海洋研究所
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