Determination of tyrosine traces by adsorption voltammetry of its copper (II) complex |
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| Authors: | Lizeng Wang Chengsong Ma Xiaoli Zhang Yibing Ren and Yong Yu |
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| Affiliation: | (1) Department of Chemistry, Shandong University, 250100 Jinan, Shandong, People's Republic of China |
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| Abstract: | The electrochemical behavior of the copper-tyrosine complex has been studied by linear-sweep adsorption voltammetry. In 0.02 mol/L Na2HPO4 buffer solution (pH=9.6), the complex can be adsorped on a hanging mercury drop electrode and reduced at a peak potential of about –0.42 V (vs. SCE). The secondary derivative peak height is linear proportional to the concentration of tyrosine in the range 1.0×10–7–5.0×10–5 mol/L. The detection limit is 5×10–8 mol/L.Project supported by the Provincial Science Foundation of Shandong Province |
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