Separation of trans-1,2-cyclohexanediaminetetra-acetic acid chelates of bismuth(III), iron(III) and copper(II) by reversed-phase paired-ion chromatography.
Trans-1,2-cyclohexanediaminetetra-acetic acid (DCTA) chelates of bismuth(III), iron(III) and copper(II) have been separated by two techniques using reversed-phase paired-ion chromatography. In one, the chelates in aqueous solution were separated within 20 min on a 6.0 x 300 mm ERC-ODS column with 10(-2)M tetrabutylammonium ion (TBA(+)) in methanoi-water mixture (45:55 v v ) as eluent. In the other, the metal ions in aqueous solution were separated within 10 min by direct injection into an ERC-ODS column with 10(-2)M TBA(+)/10(-3)M DCTA in methanoi-water mixture (40:60 v v ) as eluent.
Inoue
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S
Department of Environmental Engineering, Kitami Institute of Technology, Kitami-shi, 090 Japan.
Hashimoto
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N
Hoshi
S
S
Matsubara
M
M