矿物浮选药剂水杨羟肟酸和F20_3的HPLC分离和测定

SEPARATION AND DETERMINATION OF FLOATATION AGENTS SALICYL HYDROXAMIC ACID AND F 203 BY HPLC

提出了一种用高效液相色谱法分离和测定矿物浮选用表面活性剂水杨羟肟酸和Ｆ２０３的方法．在试验确定的最佳实验条件下，水杨羟肟酸的线性范围为（０．０５０～１．０）ｍｇ／２５ｍＬ，Ｆ２０３的线性范围为（０．０１０～１．０）ｍｇ／２５ｍＬ．，两者混合测定时，其线性范围不变．人工合成样品的分析结果表明：水杨羟肟酸的回收率在８８％～１０６％之间，Ｆ２０３的回收率在８５．５％～１０７％之间．还对矿物浮选后的实际样品进行了测定，得到单种药剂和混合药剂在矿物表面的吸附量符合一般等温吸附规律。

The separation and determination of salicyl hydroxamic acid and F 203 in flotation by HPLC on C 18 column is described. The best experimental condition is obtained. The linear range is (0 050～1 00) mg/25 mL for salicyl hydroxamic acid and (0 010～1 00) mg/25 mL for F 203 . The results of artificial synthetic samples show that the recovery is 88 0%～106 2% for salicyl hydroxamic acid and 85 5%～107 4% for F 230 . Finally, the practical samples after floatation have been determined. It has been found that the absorptivity of the single agent and the mixed agents on surface of the ores accords with isothermal absorption. The results can well explain the coordinate function of floatation agents in ore floating process.