摘要
研究了用甲苯萃取浮选Mo(Ⅴ)—SCN^-—Kφ三元络合物的各种条件。在硫酸介质中,紫红色络合物最大吸收波长位于585nm,摩尔吸光系数为2.8×10~5l·mol^(-1)·cm^(-1),钼量在0—10μg/25ml范围内符合比耳定律。大量常见元素均不干扰,40倍的钨(Ⅵ)亦不干扰钼的测定,方法已应用于钨矿中微量钼的测定,其结果令人满意。
The conditions for the methyl benzene extraction flotation of the thiocyanate complex of molybdenum with crystal violet are studied. In sulfuric solution medium, absorption maxmium of the darkviolet red complex is 585nm, and the molar absorptivity is 2.8×10~5l·mol^(-1)·cm^(-1). Beer's law is obeyed in the range Mo 0—10μg/25ml. Common elements and 40 times W(Ⅵ) don't interfere with the determination of molybdenum. The recommended method is successfully used for determination of molybdenum in wolframite.
关键词
钼
测定
萃取浮选
光度法
结晶紫
molybdenum, extraction flotation spectrophotometry, crystal violet, ternary complex.
