论文部分内容阅读
仪器中子活化分析法可以方便地测定几十毫克岩石样品中ppb级的微量金,精度好于5％,然而由于金在岩石中多以自然金状态存在,在矿石中的分布是不均匀的,直接影响测量结果,故只有保证足够的取样量,分析的结果才具有代表性.因此采用中子活化分析法测定金,也常常需要预富集。本文采取铅火试金-中子活化分析法,测试了我国研制的四个金银地质标准参考样品中的微量金。实验方法为:取50g样品,按石英脉的配料方案进行配料、搅
Instrumental neutron activation analysis can easily measure ppb grade trace gold in several tens of milligrams of rock sample, with accuracy better than 5%. However, due to its natural gold state in the rock, the distribution in the ore is not uniform , Directly affect the measurement results, it is only necessary to ensure adequate sampling volume, the results of the analysis was representative. Therefore, the use of neutron activation analysis of gold, but also often need to pre-enrichment. In this paper, the lead-test gold-neutron activation analysis method was used to test the trace gold in four reference samples of gold and silver geology developed in our country. The experimental method is: Take 50g sample, according to the quartz vein ingredients program ingredients, stir