Selective Transport of Lead(II) through a Bulk Liquid Membrane Using a Cooperative Carrier Composed of Benzylaza-12-crown-4 and Oleic Acid

Bulletin of the Korean chemical society

Mojtaba Shamsipur¹  Sayed Yahya Kazemi¹ 

关键词: Liquid membrane;    Lead transport;    Benzylaza-12-crown-4;    Oleic acid;    Thiosulfate;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

A chloroform membrane system containing a given mixture of benzylaza-12-crown-4 and oleic acid is introduced for the selective and efficient transport of Pb²⁺ ion. The transport was capable of moving metal ions ‘up-hill�?. In the presence of S₂O₃^2- ion as a suitable metal ion acceptor in the receiving phase, the amount of lead ion transport across the liquid membrane after 150 minutes is (95.0 �? 1.7)%. The selectivity and efficiency of lead transport from aqueous solution containing Tl⁺, Ag⁺, Mg²⁺, Ca²⁺, Co²⁺, Ni²⁺, Cu²⁺, Zn²⁺, Hg²⁺ and Cd²⁺ were investigated. In the presence of thiosulfate as a suitable masking agent in the source phase, the interfering effects of Ag⁺ and Cu²⁺ were diminished drastically.

【 授权许可】

Unknown