PVC膜锑(Ⅲ)氯络阴离子选择电极尚未见研究,本文对三庚基十二烷基碘化铵[(C_7H_(15))_3C_(12)H_(25)NI]、7402[(C_nH_(2n+1))_3CH_3NCI]两种季铵盐进行比较,制备出性能相近的电极。前者电活性物含量为1％,以苯二甲酸二(2—乙基)已酯为增塑剂,该电极线性响应范围为1×10~(-1)—2×10~(-5)M,斜率为58mv/pSb;后者电活性物含量为4％,以苯二甲酸二壬酯为增塑剂,该电极线性响应范围为1×10~(-1)—3×10~(-5)M,斜率 PVC membrane antimony (Ⅲ) chloride network anion selective electrode has not been studied. In this paper, three heptyldodecylammonium iodide [(C_7H_ (15)) _ 3C_ (12) H_ (25) NI], 7402 [(C_nH_ 2n + 1)) _ 3CH_3NCI] two quaternary ammonium salt were compared to prepare a similar performance of the electrode. The former has the content of electroactive matter of 1%, and the linear response range of the electrode is 1 × 10 -1 -2 × 10 -5 with bis (2-ethylhexyl) phthalate as plasticizer. M, the slope of 58mv / pSb; the latter content of 4% of the active substance, the dinonyl phthalate plasticizer, the linear response of the electrode 1 × 10 -1 -3 × 10 ~ ( -5) M, slope