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High-performance separation of small inorganic anions on a methacrylate-based polymer monolith grafted with [2(methacryloyloxy)ethyl] trimethylammonium chloride

Citation

Connolly, D and Paull, B, High-performance separation of small inorganic anions on a methacrylate-based polymer monolith grafted with [2(methacryloyloxy)ethyl] trimethylammonium chloride, Journal of Separation Science, 32, (15-16) pp. 2653-2658. ISSN 1615-9306 (2009) [Refereed Article]

DOI: doi:10.1002/jssc.200900229

Abstract

A glycidyl methacrylate-co-ethylene dimethacrylate monolith in capillary format (100 μm/id) has been grafted with chains of poly([2(methacryloyloxy) ethyl] trimethylammonium chloride (poly-META) and applied to the ion-chromatographic separation of selected inorganic anions. Grafting chains of META onto the generic monolithic scaffold resulted in a monolith with ,electrolyte responsive flow permeability', which manifested as increased permeability in the presence of electrolyte solutions. Using an eluent of 2 mM sodium benzoate and on-column contactless conductivity detection, a test mixture of six common anions was isocratically separated and detected within 12 min, with the first four anions baseline resolved within a retention time window of 3.2 min. Retention time precision was ≤1.2% for all anions tested. Separation efficiencies of 15000 N/m were achieved for fluoride at 1 μL/min, with column efficiencies up to 29500 N/m obtained at a lower flow rate of 100 nL/min. Furthermore, repeatability of the column modification procedure using photografting methods was acceptable, with retention times between replicate columns matching within 9%. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Paull, B (Professor Brett Paull)
ID Code:72027
Year Published:2009
Web of Science® Times Cited:21
Deposited By:Research Division
Deposited On:2011-08-18
Last Modified:2015-01-21
Downloads:0

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