高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (2): 125.

• 研究简报 • 上一篇    下一篇

离子选择电极在络合滴定中的应用(Ⅱ)—铁、铝、钛的连续电位滴定

李晶1, 邝曙民1, 蔡起华2   

  1. 1. 大连铁道学院分析化学研究室;
    2. 辽宁师范大学化学系
  • 收稿日期:1984-10-25 出版日期:1986-02-24 发布日期:1986-02-24

The Application of Ion-Selective Electrode to the Complexation Titration —Comsecutive Potential Titration of Iron, Aluminium and Titanium

Li Jing1, Kuang Shumin1, Chai Qihua2   

  1. 1. Analytic Chemistry Teaching Group, Dalian Institute of Railway, Dalian;
    2. Department of Chemistry, Liaoning Normal University, Dalian
  • Received:1984-10-25 Online:1986-02-24 Published:1986-02-24

摘要: Ee、Al、Ti三种元素性质十分相似,分别测定时须经分离和掩蔽[1],因此,分析工作者对其连续测定很感兴趣。用指示剂指示终点的络合滴定法已有报导[2-5],但该法在实际应用中存在一些困难。如:Fe本身与络合剂形成较深的黄色络合物,干扰终点的观测;Mn的干扰较难消除等,使其应用受到限制。为此,本文提出了用电位滴定法连续测定Fe、Al、Ti。

Abstract: The present paper describes the consecutive potential titration of iron, aluminium and titanium in a single sample solution by copper ion-selective electrode. The method is simple and accurate, and there needs no separation. The reproducibility is high and the method is satisfactory to analyse various silicates.

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