阴离子洗涤剂选择性电极电位滴定法测定石油磺酸钠

Concentration Determination of Petroleum Sulfonate by Potentiometric Titration

本文以阴离子洗涤剂选择性电极作指示电极,用电位滴定法测定石油磺酸钠的浓度。当浓度在20％左右时,相对偏差小于±1％,测定选矿尾水中痕量石油磺酸钠的相对偏差为±8.1％。本法操作简单,适宜于快速分析。

The concentration of sodium petroleum sulfonate was determined bypotentiometric titration using anionic detergent selective electrode as end point monitor.The relative error at 20% concentration was less than ±1%,and the relative error ofdetermining the trace sodium petroleum sulfonate in discharged waste water was about±8.1%.This method is simple and applicable to rapid determination of petroleumsulfonate in flotation solution.