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以三庚基十六烷基高氯酸铵为活性材料,邻苯二甲酸二辛酯为增塑剂制得了PVC膜ClO_4~-电极。线性响应范围2×10~(-6)-10~(-1)MClO_4~-;选择性类似或稍优于Orion93-81 ClO_4~-电极;其他性能良好,使用寿命可达6个月。以此电极指示,常温下用十六烷基三甲基氯化铵(CETAC)电位滴定ClO_4~-,Gran作图纸法处理结果,测定了某些高氯酸盐中ClO_4~-的含量。该方法回收率99.5—102％,变动系数0.26％,对≥10~(-4)MClO_4~-试液,误差为0.5％。常见的阴阳离子无显著影响,可用硫酸亚铁铵
A PVC membrane ClO 4 ~ - electrode was prepared with triheptyl hexadecyl ammonium perchlorate as active material and dioctyl phthalate as plasticizer. The linear response range is 2 × 10 -6 -10 -10 -1 (MClO 4 -). The selectivity is similar to or slightly better than that of Orion 93-81 ClO 4 - electrode. The other properties are good and the service life is up to 6 months. The electrode was used to determine the content of ClO_4 ~ - in some perchlorates by Cotac titration of ClO_4 ~, Gran at the normal temperature. The method recovery rate of 99.5-102%, coefficient of variation of 0.26%, ≥ 10 ~ (-4) MClO_4 ~ - test solution, the error was 0.5%. Common yin and yang no significant effect, available ammonium ferrous sulfate