高等学校化学学报

高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (1): 136.

• 研究简报 • 上一篇    下一篇

一种新的马钱子碱液膜电极的研制与应用

沈国励, 姚守拙, 孙穗   

  1. 湖南大学化学化工系
  • 收稿日期:1982-06-11 出版日期:1984-02-24 发布日期:1984-02-24

PREPARATION AND APPLICATION OF A NEW STRYCHNINE-SELECTIVE LIQUID MEMBRANE ELECTRODE

Shen Guoli, Yao Shouzhuo, Sun Sui   

  1. Chemistry and Chemical Engineering Department, Hunan University, Changsha
  • Received:1982-06-11 Online:1984-02-24 Published:1984-02-24

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摘要： 本文以四间甲苯硼酸根用作新阴离子缔合剂,并以与马钱子碱形成的离子缔合物作活性物质,代替文献中的苦酮酸-马钱子碱装制电极。电极对马钱子碱响应的线性范围为1×10-2—5×10-6M,检测下限可达1×10-6M,对毛果云香碱、阿托品和辛可宁等生物碱的选择性系数及响应时间等性能,均比文献报导为佳。

Abstract: Anew strychnine-selective liquid membrane electrode made with strychnine-tetra (m-methylphenyl) borate ion-pair complex is developed. The electrode shows Nernstian response down to 5×10-6 M strychnine solutions with a slope of 56mV/concentration decade, and better selectivity than previously published one. Rapid and accurate methods for direct potentiometry or potentiometric titration of strychnine in pharmaceutical preparations are suggested.

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