高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (1): 15.
• 研究论文 • 上一篇 下一篇
李启隆, 邢京娜
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Li Qilong, Xing Jingna
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摘要: 邻苯二酚紫在NH4Ac(pH4.7)底液中还原,产生良好的示波极谱图,Ep1=-0.66V(vs.SCE).加入A13+后,此波高降低,并在稍负的电位上出现一个尖峰形的新波(EP2=-0.85V),其峰电流与铝的浓度在1×10-6-1.2×10-5M范围成正比,此波可用于测定铝,实验表明,该波属于络合吸附波,用连续变化法确定络合物的络合比为1:1。
Abstract: In a supporting electrolyte containing 3.5·10-5Mpyrocatechol, 0.015 NH4Ac and at pH 4.7, an adsorptive complex wave of aluminium-pyrocatechol was obtained by single-sweep polarography. The peak potential of the polarographic wave was -0.85V (vs, SCE). The linear relationship between wave height and concentration of Al+3 held in the range of 1 ·10-6- 1. 2·10-5M.The composition of the complex in the ratio 1:1 was determined. This wave was proved to be an adsorptive wave by several experiments. The mechanism of the electrode reaction was discussed.
TrendMD:
李启隆, 邢京娜. 铝-邻苯二酚紫络合吸附波的研究. 高等学校化学学报, 1986, 7(1): 15.
Li Qilong, Xing Jingna . Study on Adsorptive Complex Wave of Aluminium-Pyrocatechol. Chem. J. Chinese Universities, 1986, 7(1): 15.
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