158.pdf (323.79 kB)
Low pressure ion chromatography with a low cost paired emitter–detector diode based detector for the determination of alkaline earth metals in water samples
journal contribution
posted on 2023-05-16, 20:06 authored by Barron, L, Nesterenko, PN, Diamond, D, O'Toole, M, Lau, KT, Brett PaullBrett PaullThe use of a low pressure ion chromatograph based upon short (25 mm × 4.6 mm) surfactant coated monolithic columns and a low cost paired emitter-detector diode (PEDD) based detector, for the determination of alkaline earth metals in aqueous matrices is presented. The system was applied to the separation of magnesium, calcium, strontium and barium in less than 7 min using a 0.15 M KCl mobile phase at pH 3, with post-column reaction detection at 570 nm using o-cresolphthalein complexone. A comparison of the performance of the PEDD detector with a standard laboratory absorbance detector is shown, with limits of detection for magnesium and calcium using the low cost PEDD detector equal to 0.16 and 0.23 mg L-1, respectively. Finally, the developed system was used for the determination of calcium and magnesium in a commercial spring water sample. © 2006 Elsevier B.V. All rights reserved.
History
Publication title
Analytica Chimica ActaVolume
577Pagination
32-37ISSN
0003-2670Department/School
School of Natural SciencesPublisher
Elsevier BVPlace of publication
NetherlandsRepository Status
- Restricted