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偶氮氯膦Ⅰ被推荐为镁试剂,对稀土元素显色反应灵敏度低,一直被人们忽视。 为测定矿石中高中含量稀土。研究了偶氮氯膦Ⅰ与稀土元素之间反应的各种条件。试验确定偶氮氯膦Ⅰ与稀土元素络合反应的适宜pH范围为9.5—13。络合物最大吸收在
Chlorophosphonazo I is recommended as a magnesium reagent, has low sensitivity to the chromogenic reaction of rare earth elements and has been neglected. For the determination of high-grade ore in the content of rare earth. Various conditions for the reaction between chlorophosphonazo I and rare earth elements were studied. The optimum pH range for the complexation of chlorophosphonazo Ⅰ with rare earth elements was determined to be 9.5-13. The maximum absorption of complex in