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金离子选择性电极的研制虽有报导,但多无实用价值。唯华惠珍等的PVC膜电极较佳,对AuCl_4~-离子在1×10~(-5)-2×10~(-3)M范围内接近能斯特响应(S=55mV/pM),该电极寿命>4个月,曾应用至含金3—27g/t矿样分析,相对误差10％左右。我们依据在各种阴离子中,AuCl_4~-在盐酸介质中对季铵盐型阴离子交换树脂有近乎最大的交换能力这一事实,研制了以十六烷基吡啶·氯金酸缔合物为电活性材料,邻苯二甲酸二正辛酯(或邻
The development of gold ion selective electrode although reported, but more no practical value. The PVC membrane electrode such as Weihua Huizhen et al. Is close to the Nernst response (S = 55mV / pM) for AuCl_4 ~ - ions in the range of 1 × 10 ~ (-5) -2 × 10 ~ (-3) The electrode life of> 4 months, has been applied to gold 3-27g / t ore sample analysis, the relative error of about 10%. Based on the fact that AuCl_4 ~ - has nearly maximum exchange capacity for quaternary ammonium anion exchange resins in various anions, we have developed a new method using cetylpyridinium chloride Active material, di-n-octyl phthalate (or ortho