Precise Coulometric Determination and Separation of Redox Inert Ions Based on Electrolysis for Ion Transfer at the Aqueousl Organic Solution Interface

研制了一种用于水-有机(W|O)界面快速库仑离子传递的流动池(FECRIT)，可在1min内实现99%以上的离子定量传递。当采用两步FECRIT和合适的配位体时，在没有共存阳离子干扰的情况下，以库仑数计算，测定钙的效率为99.9±0.1%。在本工作中，还发展了一种新的测定阴离子库仑的FECRIT。

A flow cell for the rapid and coulometric ion transfer at the aqueous| organic(W| O) interface(FECRIT) developed could be attained for the quantitative ion transfer with efficiency more than 99% within 1 min. When two-step FECRIT and a suitable ligand were adopted, the determination of Ca2+could be achieved with the efficiency of 99.9±0.1% based on the coulomb number for the transfer of Ca2+without any interference of coexistence cations. In the present work, new FECRIT for the coulometric determination of anions was also developed.