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Green sample preparation for liquid chromatography and capillary electrophoresis of anionic and cationic analytes


Wuethrich, A and Haddad, PR and Quirino, JP, Green sample preparation for liquid chromatography and capillary electrophoresis of anionic and cationic analytes, Analytical Chemistry, 87, (8) pp. 4117-4123. ISSN 0003-2700 (2015) [Refereed Article]

Copyright Statement

Copyright Published 2015 by the American Chemical Society

DOI: doi:10.1021/ac504765h


A sample preparation device for the simultaneous enrichment and separation of cationic and anionic analytes was designed and implemented in an eight-channel configuration. The device is based on the use of an electric field to transfer the analytes from a large volume of sample into small volumes of electrolyte that was suspended into two glass micropipettes using a conductive hydrogel. This simple, economical, fast, and green (no organic solvent required) sample preparation scheme was evaluated using cationic and anionic herbicides as test analytes in water. The analytical figures of merit and ecological aspects were evaluated against the state-of-the-art sample preparation, solid-phase extraction. A drastic reduction in both sample preparation time (94% faster) and resources (99% less consumables used) was observed. Finally, the technique in combination with high-performance liquid chromatography and capillary electrophoresis was applied to analysis of quaternary ammonium and phenoxypropionic acid herbicides in fortified river water as well as drinking water (at levels relevant to Australian guidelines). The presented sustainable sample preparation approach could easily be applied to other charged analytes or adopted by other laboratories.

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
UTAS Author:Wuethrich, A (Mr Alain Wuethrich)
UTAS Author:Haddad, PR (Professor Paul Haddad)
UTAS Author:Quirino, JP (Associate Professor Lito Quirino)
ID Code:105933
Year Published:2015
Web of Science® Times Cited:15
Deposited By:Austn Centre for Research in Separation Science
Deposited On:2016-01-20
Last Modified:2017-10-30

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