イオン対抽出定数に関する研究 : 個々のイオン及び溶媒への抽出定数の割り当て

概要

論文の詳細を見る
It is assumed that the extraction constant, K_<ex>, for the ion-pair extraction systems is made up of three independent constants (individual extraction constants), K_c, K_a and K_s, in accordance with the equation: log K_<ex> = log K_c + log K_a + log K_s where the subscripts c, a, and s denote cation, anion, and solvent, respectively. Log K values for several cations, anions, and solvents were calculated from experimental values of log K_<ex> by tentatively assigning the log K values 1.0 and 0.0 to perchlorate and benzene, respectively, as reference values. The cations, anionsj and the solvents studied were Co(III) complexes of three 2-(2-pyridylazo)-5-diethylaminophenols, perchlorate and three anionic surfactants, and benzene, toluene, and chlorobenzene. The above equation is shown to be useful in estimating the unknown value of K_<ex> from the constants assigned to each ion and the solvent.
社団法人日本分析化学会の論文
1982-09-05