中华医学超声杂志

应用化学 ›› 1990, Vol. 0 ›› Issue (1): 66-69.

• 研究论文 • 上一篇    下一篇

Cu(Ⅰ)-烯丙基硫脲的络合吸附波

胡乃非, 俞善辉   

  1. 北京师范大学化学系 北京 100875
  • 收稿日期:1989-02-27 修回日期:1989-09-12 出版日期:1990-02-10 发布日期:1990-02-10

ON THE ADSORPTIVE-COMPLEX WAVE OF COPPER(Ⅰ)WITH ALLYLTHIOUREA

Hu Naifei, Yu Shanhui   

  1. Department of Chemistry, Beijing Normal University, Beijing 100875
  • Received:1989-02-27 Revised:1989-09-12 Published:1990-02-10 Online:1990-02-10

PDF

326

摘要： 在pH3.3的邻苯二甲酸氢钾底液中,Cu(Ⅰ)-烯丙基硫脲体系有一灵敏的还原波,其单扫导数峰电位Ep=-0.32V(vs.SCE),可用于微量铜的测定。工作曲线线性范围为0.002—0.12μg/mL,检测极限为0.001μg/mL。文中探讨了该波的还原机理,认为是络合吸附波。

关键词: 铜, 烯丙基硫脲, 极谱法, 微量分析

Abstract: In a supporting electrolyte containing potassium hydrogen phthalate(KHP)at pH 3.3,a sensitive derivative peak of Cu(I)-allylthiourea(ATU)complex was found by single-sweep oscillopolarography. The peak shows a potential of-0.32V(vs.SCE)and its heightis linearly proportional to the concentration of Cu in the range of 0.002 to 0.12μg/mL.The mechanism of the wave formation has been discussed. It is confirmed that the peakwave is the adsorptive-complex wave of Cu(I)-ATU.

Key words: copper, allylthiourea, polarography, microdetermination

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