根据生产,科研的要求,高纯钨中要测定铍、镉等21个杂质元素,而原方法不能测定铍,镉。为此,本试验在原法的基础上加入铍、镉两个元素,并对电流、装样方式,曝光时间、谱线黑度测量作了试验并拟定了分析方法。一、实验部分(一)电流选择用小电流预燃,进行截取曝光,对抑制基体干扰、减少背景,取得满意的效果,用4～6安电流预燃,13～16安电流曝光作了实 According to the requirements of production and scientific research, twenty-one impurity elements such as beryllium and cadmium should be measured in high-purity tungsten, while the original method can not determine beryllium and cadmium. To this end, the experiment based on the original method by adding beryllium, cadmium two elements, and current, loading mode, exposure time, spectral blackness measurements were made and the analysis of the proposed method. First, the experimental part (A) of the current selection With a small current pre-combustion, interception exposure, to suppress the interference matrix to reduce the background, and achieved satisfactory results, with 4 ~ 6 ampere current pre-combustion, 13 ~