PVC膜四碘络铋离子选择电极的研制

高等学校化学学报 ›› 1985, Vol. 6 ›› Issue (4): 318.

PVC膜四碘络铋离子选择电极的研制

齐洪韬¹, 邝曙民¹, 蔡起华²

1. 大连铁道学院;
2. 辽宁师范大学

收稿日期:1983-11-06 出版日期:1985-04-24 发布日期:1985-04-24

Study of PVC Membrane Tetraiodobismuthate (Ⅲ)Ion-Selective Electrode

Qi Hongtao¹, Kuang Shumin¹, Cai Qihua²

1. Dalian Railway Institute, Dalian;
2. Liaoning Normal University, Dalian

Received:1983-11-06 Online:1985-04-24 Published:1985-04-24

摘要/Abstract

摘要： 铋离子选择性电极迄今很少报导。K.Ohzekl等报导的响应性能欠佳,P.W.Alexander等报导的BiCl₄^-涂丝电极线性范围10^-1—10^-4M,斜率36.5mV。本文报导以三庚基十二烷基碘化铵为活性物的PVC膜四碘络铋离子选择电极的研究结果。

Abstract: A PVCmembrane bismuth (Ⅲ) ion-selective electrode based on the triheptyl-dodecyl-tetraiodobismuthate (Ⅲ) ion pair is described. In a solution of 0.15 MKI, the electrode exhibits Nernstian response for bismuth (Ⅲ) ion over the concentration range from 1 × 10^-2Mto 3×10^-6Mwith a slope of 60 mV (at 25℃). The detection limit is down to 1.3× 10^-6M. Membrane potentials are independent of pH 1-4. The potentiometric selectivity coefficient of some anions have been measured. The preparation of the electrode and optimum conditions for its use are discussed.

TrendMD:

齐洪韬, 邝曙民, 蔡起华. PVC膜四碘络铋离子选择电极的研制. 高等学校化学学报, 1985, 6(4): 318.

Qi Hongtao, Kuang Shumin, Cai Qihua. Study of PVC Membrane Tetraiodobismuthate (Ⅲ)Ion-Selective Electrode. Chem. J. Chinese Universities, 1985, 6(4): 318.