均三溴氯磺酚是新研制的一种不对称变色酸双偶氮衍生物,其结构式为:该试剂在pH=3.5的酸性介质中与钪有灵敏的显色反应,其摩尔吸光率为2.87×10~4L·mol~(-1)·cm~(-1),Sandell灵敏度为0.0016μg·cm~(-2),且对稀土元素有较高的抗干扰能力,毫克量级的镧、铈不影响钪的测定。所以在矿石的萃取分离中比原有的一些方法 Chlorotolurol is a newly developed asymmetric chromotropic acid disazo derivatives, the formula is: The reagent pH = 3.5 in an acidic medium and scandium sensitive color reaction, the molar absorptivity of 2.87 × 10-4L · mol -1 · cm -1, Sandell’s sensitivity is 0.0016μg · cm -2, and has high anti-interference ability for rare earth elements. , Cerium does not affect the determination of scandium. Therefore, some of the original methods in the extraction of ore separation