金属铜铅锌铝离子与乙二醇的络合行为

Complexation Behaviors of Different Metal Ions with Ethylene Glycol

采用酸碱滴定法研究铜、铅、锌、铝离子与乙二醇的络合作用,并利用计算机软件MEDUSA模拟出它们的络合常数;试验结果表明乙二醇和铜、铅、锌离子之间的络合作用较弱,属物理作用范畴;而乙二醇和A l3+作用较铜、铅、锌离子为强,可生成一种新的沉淀物。

The complexation of Cu^2＋ , Pb^2＋ , Zn^2＋ , Al^3＋ with ethylene glycol was studied by potentiometric titration. MEDUSA, a computer software,was used to simulate the coordination constants of Cu^2＋ , Pb^2 ＋ , Zn^2＋ , Al^3＋ with ethylene glycol, respectively. The re- suits show that the reaction of Cu^2＋ , Pb^2＋ ,Zn^2＋ with ethylene glycol was weak physical interaction, and the reaction of ethylene glycol with Al^3＋ was strong enough to form a new precipitate.