在以化学分析方法分析金属铬中铁、铝两元素时,因有氯化铬酰散布,污染空气,对人体有一定影响。我们在批林批孔和学习无产阶级专政理论的推动下,于一九七四年二月开始,利用光谱对金属铬中铅、锡、铋、锑的试样,对铁、铝两元素进行了摄谱试验。经两年多反复试验比较,已初步确定了光谱分析金属铬中铁、铝元素的方法,取得 In the analysis of chemical analysis of chromium metal in iron, aluminum two elements, because of chromium chloride dispersion, pollution of the air, have a certain impact on the human body. In February 1974, driven by the criticisms and criticisms of the proletariat and the study of the theory of the dictatorship of the proletariat, we made use of spectroscopy to test the contents of the two elements Pb, Sn, Bi and Sb in metallic chromium The photo test. After more than two years of trial and comparison, has been initially identified the method of spectral analysis of chromium, iron, aluminum, obtained