【摘要】 <正> L—半胱氨酸（L—Cys）是蛋白质的降解产物之一,在体内除参与蛋白质的合成外,还参与毒物的解毒过程。本文用pH电位滴定法测定L—Cys同Fe²⁺、Ni²⁺、Zn²⁺、Pb²⁺形成配合物的稳定常数,以温度系数法获得配位反应的焓变,根据所得的热力学参数,对配位反应的推动力和配合物的结构进行讨论,并进一步用红外光谱和电子光谱对Pb²⁺、Ni²⁺两体系所得的结果予以证实。更多还原

【Abstract】 The free energy, enthalpy and entropy changes for the formation of coordination compounds of L—cysteine with Fe, Ni, Zn and Pb ions have been determined. These results are used to discuss driving force of the coordination reactions and structure of the coordination compounds.更多还原