NDLI: In-Capillary Derivatization and Preconcentration for CE of Metal Ions as Their Phenanthroline Complexes

Content Provider	Springer Nature Link
Author	Boonchiangma, Suthasinee Kukusamude, Chunyapuk Ngeontae, Wittaya Srijaranai, Supalax
Copyright Year	2013
Abstract	A simple and automated method involving in-capillary derivatization and in-capillary preconcentration was developed for the simultaneous determination of metal ions by capillary zone electrophoresis. Fe(II), Zn(II), Cu(II) and Cd(II) were derivatized using 1,10-phenanthroline as the derivatizing agent. The in-capillary derivatization and in-capillary preconcentration via large volume injection were performed sequentially as follows: 60 mmol L−1 1,10-phenanthroline was first hydrodynamically injected (0.2 psi) for 2 s; metal ions were introduced by hydrodynamic injection (0.5 psi) for 60 s; 0.2 mol L−1 acetate pH 5.5 containing 20 % methanol was used as the running buffer. Four metal ions can be determined within 8 min using 16 kV. The resulting preconcentration factors were in the range 12–21. Good linearity was obtained for concentrations of 0.1–8.0 mg L−1 (r 2 > 0.990). The mean recoveries of the metal ions evaluated by fortification of wine samples were in the range 90–102 %. The limits of detection ranged from 0.05 to 0.2 mg L−1. The proposed method can be applied for directly determining metal ions in wine samples.
Starting Page	277
Ending Page	286
Page Count	10
File Format	PDF
ISSN	00095893
Journal	Chromatographia
Volume Number	77
Issue Number	3-4
e-ISSN	16121112
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-10-22
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Capillary zone electrophoresis In-capillary derivatization Large volume sample injection Metal ions 1,10-Phenanthroline Chromatography Proteomics Pharmacy Laboratory Medicine
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Analytical Chemistry Biochemistry Clinical Biochemistry

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