摘要
在ｐＨ５６～６４的缓冲介质中，Ｓｃ（Ⅲ）埃铬菁Ｒ（ＥＣＲ）氯化十六烷基吡啶（ＣＰＣ）乳化剂ＯＰ形成蓝色配合物，其组成比ｎＳｃ∶ｎＥＣＲ∶ｎＣＰＣ＝１∶２∶２。配合物的最大吸收波长在６１０ｎｍ处，表观摩尔吸光系数为１７１×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。Ｓｃ质量浓度为０～０２４ｍｇ／Ｌ时遵守比尔定律。拟定的方法结合ＰＭＢＰ萃取分离，测定钨矿及其浸出渣中的微量Ｓｃ。
In the presence of mixed surfactant CPC and OP, scandium(Ⅲ) forms a blue complex with eriochrome cyanine R at pH 5 6～6 4. The molar ratio of scandium(Ⅲ)∶eriochrome cyanine R∶CPC is 1∶2∶2. The multicomponent complex exhibits maximum absorption at 610 nm with a molar absorptivity of 1.71×10 5 L·mol -1 ·cm -1 . Beers law is obeyed in the range of 0～0 24 mg/L for scandium. The proposed system has been applied to the spectrophotometric determination of trace scandium in tungsten ores and their leached dregs after previous solvent extraction separation of scandium with PMBP.
出处
《岩矿测试》
CAS
CSCD
北大核心
1996年第3期213-216,共4页
Rock and Mineral Analysis
