本文通过此较四种季铵盐研制了以三辛基十六烷基碘代铵为定域体,苯二甲酸二(2-乙基)己酯和苯二甲酸二壬酯(1∶1)混合溶剂为增塑剂,镀金丝为内参比电极的PVC膜AuCl_4~-电极.该电极比现有电极好,线性范围宽(1×10~(-7)～6×10~(-2)M),灵敏度高,响应快,选择性好,便于商品化.应用该电极按标准加入法直接测定矿石中的金,方法简便、快速,其结果与经典法相符. In this paper, more than four quaternary ammonium salts were developed using trioctyl cetyl iodo-ammonium as the deltas, di (2-ethylhexyl) phthalate and dinonyl phthalate (1: 1 ) Mixed solvent as plasticizer and gold wire as internal reference electrode, which has a better linearity than the existing electrode (1 × 10 -7 ~ 6 × 10 -2 ) M), high sensitivity, fast response, good selectivity and easy commercialization.Using this electrode to directly measure the gold in ore by the standard addition method, the method is simple and fast, and the result is in accordance with the classical method.