摘要
在pH6.2～6.8的溶液中,钪(Ⅲ)与埃铬青R(ECR)及溴化十六烷基三甲基铵(CTMAB)形成绿蓝色的三元配合物,其组成比Sc∶ECR为1∶3。三元配合物的最大吸收波长在615nm处,表观摩尔吸光系数为1.35×10~5。钪在0～7μg/25ml范围内遵守比尔定律。拟定的方法,经PMBP萃取分离之后,测定钨矿及其浸取渣中的微量钪,结果满意。
Scandium ( III ) forms a gre;n-blue complex with erioclirome cyanine R and cetyltrimethylammo-nium bromide at pH 6.2-6. 8. The molar ratio of scandium to eriochrome cyanine R is found to be 1:3.The ternary complex exhibits maximum absorption at 615 nm with a molar absorptivity of 1.35 X105. Beer's law was obeyed in the range 0-7ug/25ml. The proposed method has been used to the determination of trace scandium ia tungsten ores and its ettractive dregs after previous separation of scandium with extraction of PMBP.
出处
《冶金分析》
CAS
CSCD
北大核心
1990年第6期4-6,共3页
Metallurgical Analysis
