β-环糊精光度法测定捕收剂在煤表面的吸附量

Collecting Agent Adsorption Quantity Determination on Coal Surface by β-Cyclic Dextrin Spectrophotography method

在等温条件下, 将有机染料对疏水性浮选捕收剂进行染色, 利用β-环糊精内部具有疏水性, 腔外羟基具有亲水性的特点。染色后的浮选捕收剂进入β-环糊精主体的疏水部分形成有色的主-客体包合物, 此包合物的消光值与捕收剂的浓度成比例关系, 因而可用分光光度法测定浮选残余液中捕收剂的浓度, 进而可得到浮选捕收剂在煤表面的等温吸附量。实验结果表明: 应用该种方法测定的等温吸附量数值与射线浓度计法测定的吸附量数值相吻合, 为捕收剂在煤表面等温吸附量的测定又提供了一种方法。

Hydrophobicity floatation collecting agent was dyed by organic dye under isothermal condition. After dyed of the floatation collected agent maybe into the hydrophobicity post of the β-cyclic dextrin host and to form with color host-gust clathrate due to inner of β-cyclic dextrin possess hydrophobicity and cavity hydroxyl posses hydrophilicity. The extinction of clathrate and collecting agent concentration has a certain proportion relation. The collecting agent concentration of floatation residual liquid may determination by spectrophotography and to gain the isothermal adsorption quantity of floatation collecting agent on the coal surface. Result is shown that, the isothermal adsorption quantity value is same by using this method and radiation concentration meter. Therefore, it can be provided a new method for determination the collecting agent isothermal adsorption quantity on coal surface.