Please use this identifier to cite or link to this item: https://doi.org/10.1016/0021-9673(95)00321-D
Title: Migration behaviour of alkali and alkaline-earth metal ion-EDTA complexes and quantitative analysis of magnesium in real samples by capillary electrophoresis with indirect ultraviolet detection
Authors: Wang, T.
Li, S.F.Y. 
Issue Date: 1995
Citation: Wang, T., Li, S.F.Y. (1995). Migration behaviour of alkali and alkaline-earth metal ion-EDTA complexes and quantitative analysis of magnesium in real samples by capillary electrophoresis with indirect ultraviolet detection. Journal of Chromatography A 707 (2) : 343-353. ScholarBank@NUS Repository. https://doi.org/10.1016/0021-9673(95)00321-D
Abstract: A capillary electrophoretic (CE) method was developed for the separation of some common alkali and alkaline-earth metal ions using EDTA as complexing agent and pyridine as UV chromophore for indirect detection at pH 5.00. Effects of pH and concentration of complexing agent on the differences in the effective mobilities between two ions were considered and equations derived were used to deduce the optimum conditions for their separation. Baseline separation of a group of metal ions, including K, Na, Li, Mg, Sr and Ba, was achieved in less than 4 min. The calibration range for magnesium was found to be linear up to 1.00 μg/ml when samples were prepared in the running buffer while a hyperbolic calibration curve was obtained when prepared in water. Application of the method to the analysis of magnesium in river water, urine and a solid sample of calcium carbonate was demonstrated. Magnesium in those samples was determined to be 812 μg/ml, 78.0 μg/ml and 0.023% (w/w), respectively, with reproducibilities between 5-9% R.S.D. in terms of peak height depending on sample matrices.
Source Title: Journal of Chromatography A
URI: http://scholarbank.nus.edu.sg/handle/10635/76508
ISSN: 00219673
DOI: 10.1016/0021-9673(95)00321-D
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

33
checked on Jul 16, 2018

WEB OF SCIENCETM
Citations

33
checked on Jun 20, 2018

Page view(s)

25
checked on Apr 20, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.