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Determination of uranium, iron, copper, and nickel from ore samples by MEKC using N , N ′‐ethylene bis(salicylaldimine) as complexing reagent
Author(s) -
Mirza Muhammed Aslam,
Khuhawar Muhammad Yar,
Arain Rafee
Publication year - 2008
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.200700414
Subject(s) - chemistry , reagent , nickel , cobalt , copper , uranium , palladium , nuclear chemistry , chelation , detection limit , ethylene , inorganic chemistry , chromatography , catalysis , metallurgy , materials science , biochemistry , organic chemistry
An analytical procedure has been developed for the separation of dioxouranium(VI), iron(III), copper(II), nickel(II), cobalt(II), cobalt(III), palladium(II), and thorium(IV) by MEKC using N , N ′‐ethylene bis(salicylaldimine) (H 2 SA 2 en) as a complexing reagent with total runtime <4.5 min. SDS was used as micellar medium at pH 8 with sodium tetraborate buffer (0.1 M). An uncoated fused‐silica capillary with an effective length of 50 cm×75 μm id was used with an applied voltage of 30 kV with photodiode array detection at 231 nm. Linear calibrations were obtained within 0.111–1000 μg/mL of each element with LODs within 37–325 ng/mL. The developed method was tested for analysis of uranium ore samples indicating its presence within 103–1789 μg/g with RSD within 0.79–1.87%. Likewise copper, nickel, and iron in their combined matrix were also simultaneously determined with RSD 0.4–1.6% ( n = 6).