在汞法制碱流程中,需要使汞阴极表面层保持较低的钠浓度,以降低氢在汞齐中的超电压,提高电解效率。在汞法制碱中钠汞齐的浓度分析多数仍用酸碱中和滴定的方法,此法既不能连续控制生产,且操作耗时多,汞易流失,造成环境污染。多晶钠β-氧化铝(Na_2O·9—11Al_2O_3)陶瓷是一种新发展起来的钠离子 In the mercury process, it is necessary to keep the mercury cathode surface layer at a low sodium concentration to reduce hydrogen over-voltage in the amalgam and improve the electrolysis efficiency. Concentration analysis of sodium and amalgam in the legal system of mercury still use acid-base neutralization titration method, this method can not continuously control the production, and the operation time-consuming, easy to loss of mercury, resulting in environmental pollution. Polysilicon sodium β-alumina (Na_2O · 9-11Al_2O_3) ceramic is a newly developed sodium ion