论文部分内容阅读
本文报告了用全固态Ag_2S做指示电极,全固态L_aF_3做参比电极的HCN气敏电极的结构、性能及其在测定工厂含氰废水、电镀液中氰化物含量和HCN酸效应系数、寓解常数等方面的应用。电极的灵敏度比现有电极高,重现性、选择性较好。实际线性范围5×10~(-7)—1×10~(-3)MCN~-。除较高浓度的CNS~-、Ag~+、Hg~(2+)有干扰、S~(2-)严重干扰外,其他常见离子无明显干扰。用双标准比较法测定工厂含氰废水和电镀液中氰化物的含量简便、快速,其结果与容量法基木相符、HCN酸效应系数和离解常数的测定不仅方法简便,且结果亦与现公布的数据接近。
This paper reports the structure and properties of HCN gas sensing electrode with all solid state Ag_2S as indicator electrode and all solid state L_aF_3 as reference electrode and its application in the determination of cyanide wastewater, cyanide content and HCN acid effect coefficient in electroplating solution Constant and other aspects of the application. Electrode sensitivity than existing electrodes, reproducibility, selectivity is better. The actual linear range of 5 × 10 ~ (-7) -1 × 10 ~ (-3) MCN ~ -. Except higher concentrations of CNS ~ -, Ag ~ +, Hg ~ (2+) and S ~ (2-), there was no obvious interference of other common ions. The content of cyanide in cyanide wastewater and electroplating solution of factory was determined by double standard comparison method is simple and rapid. The result is consistent with the volume method. The determination of HCN acid effect coefficient and dissociation constant is not only simple and convenient, The data is close.