中华医学超声杂志

应用化学 ›› 1985, Vol. 0 ›› Issue (3): 6-11.

• 研究论文 • 上一篇    下一篇

蒽醌类染料的电分析化学研究和应用Ⅰ.锆(Ⅳ)-四羟基蒽醌(THAQ)络合吸附波及其应用

康乐, 张月霞   

  1. 冶金工业部钢铁研究总院
  • 收稿日期:1985-01-28 修回日期:1985-03-06 出版日期:1985-09-10 发布日期:1985-09-10

STUDIES ON THE ELECTROANALYTICAL CHEMISTRY OF ANTHRAQUINONE DYE AND ITS APPLICATIONS Ⅰ.THE COMPLEX ADSORPTION WAVE OF Zr(Ⅳ)-TETRAHYDROXYANTHRAQUINONE(THAQ)

Kang Le, Zhang Yuexia   

  1. Central Iron and Steel Research Institute, Ministry of Metallurgical Industry, Beijing
  • Received:1985-01-28 Revised:1985-03-06 Published:1985-09-10 Online:1985-09-10

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摘要： 本文发现THAQ于酸性介质中,若先用NaNO2反应,在硼酸缓冲溶液(pH12.56)中,获得Zr(Ⅳ)-THAQ络合物电流峰(Ep-0.8V,对SCE),其峰高和锆浓度在2×10-7-5.5×10-6范围内成正比。检测下限为20ppb Zr(Ⅳ)。建立了示波极谱法测定钢铁合金中微量(>0.0005%)锆的新方法。操作简便,无毒,结果准确满意。经实验求得Zr(Ⅳ)-THAQ络合物组成比为1:2或1:4;相应的络合物稳定常数β1=7.1×1010,β2=8.9×1021。结果表明Zr(Ⅳ)-THAQ电流峰具有吸附特征。

Abstract: It was found tbat when THAQ was pretreated with NaNO2 in acid solution, a sharp,symmetric and sensitive peak current of Zr(Ⅳ)-THAQ complex in borate buffer solution was produced at -0.81V(vs.SCE).The height of the peak of the complex was in direct proportion to the concentration of zirconium in the range of 2.0×10-7 to 5.5×10-6M. The limit of the determination was 20 ppb of Zr(Ⅳ).A new oscillographic method for the determination of micro amount of Zr(0.0005%) in steel and alloys has been then developed.The method was simple to operate,nontoxic and the results of the analysis were satisfactory accurate.The composition ratio of Zr(Ⅳ) to THAQ in complexes determined was 1:2 and 1:4.The stability constants of the correspoding complexes calculated as β1= 7.1×1010 and β2=8.9×1021. The results showed that the peak current of Zr(Ⅳ)-THAQ is of adsoiption character.

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