光释光测年中石英样品提纯方法的改进

Improved Method for Quartz Purification in OSL Dating

为了解决光释光前处理中遇到的传统方法无法获得满足纯度石英的问题,通过大量对比实验,结合玻璃工艺中石英分离研究成果,最后获得了新的石英提纯流程,与传统方法相比,新方法通过化学分离避免了密度变化对石英长石分离的影响,从而解决了斜长石和岩屑在传统的重液分离中无法剔除的问题,新方法能够获得满足纯度要求和量要求的石英,同时,新方法比传统方法实验室工作效率更高。

In order to resolve the problem met in the pre-treatment of traditional methods for Optical stimulated luminescence （OSL） dating sample which can not obtain enough purity and quantity of quartz, a new quartz separation process in obtained, with contrast experiments, combined with the well-developed quartz purification techniques in glass production, finally a new quartz separation process is obtained. Compared with the traditional methods, the new method adopted by chemical separation to avoid the impact of density of feldspar thus resolves the problem of plagioclase feldspar and debris that can not be removed totally during the traditional methods. The new method can obtain more sufficient purity quartz and at the same time is more efficient in laboratory work.