Extraction and bulk liquid membrane transport of some main group metal ions facilitated by triethylene glycol monomethyl ether

摘要

The extraction and carrier facilitated transport of Na~+, K~+, Mg~(2+) and Ca~(2+) picrates dinitrophenolates, orthonitrophenolates and thiocyanates were studied using triethylene glycol monomethyl ether as a carrier through chloroform, 1,2 dichloroethane and carbontetrachloride bulk liquid membranes. K~+ and Ca~(2+) were selectively extracted into the organic phase over Na~+ and Mg~(2+). The ionophore is an efficient carrier for transport of Na~+ and Ca~(2+) over K~+ and Mg~(2+). Higher extraction of cations was observed on CH_2ClCH_2Cl than in CHCl_3 and CCl_4, while the amount of cations transported was the same in all the solvents. The anion has no effect on extraction and transport of cations. This ionophore is an efficient extractant and carrier for transport of both alkali and alkaline earth metal ions.