氯化十六烷基二甲基苄基铵PVC膜糖精离子选择电极的研制

Preparation of PVC Membrane SaccharinIon-Selective Electrode with HexadecylDimethyl Benzyl Ammonium Chloride

本文以氯化十六烷基二甲基苄基铵为活性材料研制成ＰＶＣ碳棒涂膜式糖精电极。其线性响应范围为５．０×１０￣－５～１．０×ｌ０￣－１ｍｏｌ／Ｌ，响应斜率５３．２ｍＶ／ｐｃ。将电极用于饮料中糖精含量测定，回收率在９０％～１１０／范围内。

new saccharin ion-selective electrodehas been prepared by coating a graphite rodwith PVC membrane using hexadecyl dimethylbenzyl ammonium chloride as the active material.The electrode exhibits Nernst responsewith a slope of 53.2mV/pc at pH 5.0 over theconcentration range of saccharin 5.O×10￣-5～1.O×10￣-1mol/L. The recoverv is within 90～110%。