痕量金的分析,目前采用的化学分析方法,由于灵敏度较差,不能满足地质上的要求。河南省局实验室的改进光谱法是目前推广的方法。中子活化分析法,由于其核的特征反应,所以具有灵敏度高、选择性好及取样量少的特点,对单矿物中金的分析是其它方法所不及的,且能进行多元素同时分析。 实验方法 一、标准与样品的制备 Trace gold analysis, the current chemical analysis methods, due to poor sensitivity, can not meet the geological requirements. Henan Bureau laboratory improved spectroscopy is the method of promotion. Neutron activation analysis, due to its characteristic reaction of the nucleus, has the characteristics of high sensitivity, good selectivity and small sample volume. The analysis of gold in single minerals is beyond the reach of other methods and can simultaneously analyze multiple elements. Experimental methods First, the standard and sample preparation