四烷基锡中性载体推动亚硝酸根离子迁移穿透大块液膜

通过大块液膜体系研究了四烷基锡的碳链长度、载体浓度.NO_2~-浓度及抗衡离子等因素对NO_2~_穿透含四烷基锡的液膜的传质速率的影响,讨论了它们与四烷基锡为载体的离子电极性能间的关系。NO_2~-通过四烷基锡为载体的液膜的迁移规律符合离子对传输模式。

Tetraalkyitin Neutral Carrier-Facilitated Transfer of Nitrite Ion Across Bulk Liquid Meinbranes

The transfer of nitrite ions through bulk liquid membrane mediated by tetra-alkyltin carriers was studied experimentally.The length of the carbon-chain in the car-rier molecules has substantial effect on the NO 2--transfer, which is closely related to the response characteristic of the nitrite-sensitive electrodes prepared by the use of thesecarriers. The effects of the concentration of tetraalkyltin and nitrite ion, and the nature of counter ions on the transport rates of nitrite were studied.The relationship between these phenomena and the properties of electrodes based on tetraalkyltin carriers are discussed.The experimental results are interpreted in terms of the ion-pair mechanism, of neutral carrier-mediated ion transport.