| 铝-邻苯二酚紫络合吸附波的研究 |
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| 引用本文： | 李启隆,邢京娜.铝-邻苯二酚紫络合吸附波的研究[J].高等学校化学学报,1986,7(1):15. |
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| 作者姓名： | 李启隆 邢京娜 |
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| 作者单位： | 北京师范大学化学系 |
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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。
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| 收稿时间： | 1984-07-30 |
Study on Adsorptive Complex Wave of Aluminium-Pyrocatechol |
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| Li Qilong,Xing Jingna.Study on Adsorptive Complex Wave of Aluminium-Pyrocatechol[J].Chemical Research In Chinese Universities,1986,7(1):15. |
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| Authors: | Li Qilong Xing Jingna |
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| Institution: | Department of Chemistry, Beijing Normal University, Beijing |
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| 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. |
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