Separation of Metal Bis(2-hydroxyethyl)dithiocarbamate Complexes by Micellar Electrokinetic Capillary Chromatography
نویسندگان
چکیده
A method was developed for the separation of CdII, PbII, PtII, CoII, NiII, BiIII, CrII, CuII and HgII bis(2-hydroxyethyl)dithiocarbamate (HEDTC) complexes by micellar electrokinetic capillary chromatography. The complexes were formed by pre-capillary reaction of the metal ions with an excess of the ligand and then separated using a 100 mm borate buffer (pH 9.2) containing 4% methanol (v/v), 10 mm sodium dodecyl sulfate and 0.1 mm HEDTC, with detection at 254 nm. All the metal complexes, except PtII and PbII, were baseline resolved and separation was achieved in under 7 min. Detection limits were in the range 22 to 133 ppb.
منابع مشابه
Separation of dithiocarbamate metal complexes by micellar electrokinetic chromatography
Separation of a number of transition metal complexes with bis(2-hydroxyethyl)dithiocarbamate (HEDTC) by micellar electrokinetic capillary chromatography (MEKC) with direct photometric detection was investigated. Pre-capillary complexation was shown to be superior to on-capillary complexation in terms of the number of metals ions which could be detected and their peak shapes, enabling analysis o...
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