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| The use of lithium heteropolytungstate as an alternative to bromoform for heavy media separations | |
| 出版日期 | 2011 |
| 出版者 | British Geological Survey |
| 英文摘要 | This report describes a suggested new procedure for heavy media separation using non-toxic lithium heteropolytungstate as a replacement for bromoform and other halogenated organic solvents. This work was carried out as part of the Science Facilities鈥?Maintenance and Development of Capability (MaDCap) project. Lithium heteropolytungstate is commonly known as LST, relating to its composition of lithium, sodium and tungsten. The report firstly describes heavy liquids that were traditionally used for this purpose and then details a new heavy media separation methodology using LST. Results indicate that LST is by far the safest and most efficient heavy liquid suitable for this type of mineral separation. Issues regarding LST stability indicate potential contamination through initial sample preparation methods. A small study indicates that steel swarf from disc milling is responsible for heteropoly blue contamination of the LST and not pyrite as suggested by the manufacturers. It is therefore critical that extreme care should be taken when undertaking any sample preparation prior to heavy liquid separation. |
| URL | http://nora.nerc.ac.uk/id/eprint/519459/1/IR11049.pdf |
| 国家 | 英国 |
| 语种 | 英语 |
| 来源机构 | 英国自然环境研究理事会 |
| 文献类型 | 科技报告 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/86705 |
| 推荐引用方式 GB/T 7714 | . The use of lithium heteropolytungstate as an alternative to bromoform for heavy media separations:British Geological Survey,2011. |
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| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| 519459.pdf（1665KB） | 科技报告 | 开放获取 | CC BY-NC-SA | 浏览 下载 | ||
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