稀土-偶氮氯膦Ⅲ-溴化十六烷基三甲铵三元络合物显色反应的研究及其在钢铁、合金中的应用,文献已有报导。本文进一步考察了碱土金属的干扰情况,发现可允许(毫克)存在:Ca~(2+)(3)、Ba~(2+)(0.5)、Sr~(2+)(1),这为矿石分析提供了有利条件。本文拟定了光度法直接测定矿石中稀土元素总量,无需分离手 Rare Earth - Chlorophosphonazo Ⅲ-cetyltrimethylammonium bromide ternary complex color reaction and its application in steel, alloy, literature has been reported. This paper further investigates the interference of alkaline earth metals and finds that there are (Ca2 +) (3), Ba2 + (0.5), Sr2 + (1) Ore analysis provides favorable conditions. This paper developed a spectrophotometry direct determination of the total amount of rare earth elements in the ore, without separation of hands