塩化トリオクチルメチルアンモニウムを含むゲルカラムによるフェリシアンイオンの分離濃縮

概要

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Hydrophobia gel particles containing trioctylmethylammonium chloride (TOMA-Cl) were prepared by the gelation of TOMA-Cl in chlorobenzene solution using dibenzylidene-D-sorbitol as a gelation agent. A gel column of 9.0cm^3 held 5.2cm^3 of stationary phase containing (0.75〜5.68)×10^<-5> mol of TOMA-Cl. This type of column containing 0.75×10^<-5> mol of TOMA-Cl quantitatively extracted ferricyanide ion from aqueous solution in a mole ratio of TOMA-ferricyanide as 3 : 1. Similar type of column holding 5.68×10^<-5> mol of TOMA-Cl gel particles extracted more than 2mg of ferricyanide ion, although the extraction was less quantitative. The selectivity of TOMA-Cl to ferricyanide ion was investigated by carrying out thc column extraction process using the samples containing other anions in high concentration. The order of the selectivity was found to be Fe(CN)_6^<3->>>NO_3^->Br^->Cl^->>SO_4^<2->. TOMA-Cl gel column is recommended for separating and enriching ferricyanide ion in a very dilute solution. The main advantage of this method is that any kind of mixture between the extraction reagent and the solvent can be gelated to make a gel column for the separation of specific ions.
社団法人日本分析化学会の論文
1978-09-05