以锑电极作参比电极测定废水中硫化物

A new potentiometric method for determination of sulphide ion in waster water with antimony electrode as reference electrode

提出了以锑电极作为参比电极与Ag2 S电极组成无液接测量电池测定废水中硫化物的新方法。并研究了电极的性能 ,测定条件及干扰物质的影响。方法的线性范围 1 .0× 1 0 - 2 mol/L～ 5 .0× 1 0 - 7mol/L[S2 - ],回收率为 99%～1 0 3%

A new potentiometric method for determination of sulphide ion in waste water was deseribed, in which an Ag 2S electrode served as the sensing electrode and antimony electrode served as the reference electrode. The properties of the electrodes, their determination conditions and the effects of other substances were also studied. The responses had a linear relationship with concentration of S 2- with recovery of 99%～103%.