离子选择电极法研究Cu(Ⅱ)与某些α-氨基酸在溶液中的配合平衡

Study on Coordination Equilibrium of Cu(Ⅱ) and Some α-Amino Acids in Solution by Ion-Selective Electrode Method

本文用离子选择电极在金属缓冲溶液中同时测量pM值与pH值,应用文献[1]方法测量了Cu(Ⅱ)与几种α-氨基酸在溶液中的配合平衡常数以及Cu(Ⅱ)-天门冬酰胺体系的热力学参数。 (一)仪器与试剂 pHS-2型酸度计,PXD-2型通用离子计,GSF-76-01型pCu电极,501超级恒温槽。所用试剂均为分析纯或层析纯。

In this paper the coordination equilibrium constants of Cu (Ⅱ) and several α-amino acids and thermodynamic functions of Cu( Ⅱ )-asparamide system in solution were determined by Ion-selective electrode method.