alexa Investigations on the chromatographic behaviour of zwitterionic stationary phases used in hydrophilic interaction chromatography.
Chemical Engineering

Chemical Engineering

Journal of Chromatography & Separation Techniques

Author(s): Chirita RI, West C, Zubrzycki S, Finaru AL, Elfakir C, Chirita RI, West C, Zubrzycki S, Finaru AL, Elfakir C

Abstract Share this page

Abstract Two commercial stationary phases possessing a sulfobetaine zwitterionic bonded ligand (ZIC-HILIC and Nucleodur HILIC) were compared under hydrophilic interaction chromatographic (HILIC) conditions. First of all, the separation of 12 model compounds chosen among neurotransmitters and presenting a diversity of ionization states (anionic, cationic and zwitterionic) was studied under varied operating conditions. The effects of the percentage of acetonitrile, ammonium acetate concentration and temperature of the mobile phase were compared on the two columns. Secondly, a generally applicable retention model was established, based on chromatographic retention data (logk) acquired for 76 model compounds. The chosen compounds are small molecules presenting a wide diversity of molecular structures and are relevant to biomedical and pharmaceutical studies. To account for their retention behaviour, a modified version of the solvation parameter model was designed: two additional molecular descriptors were introduced, to account for ionic interactions with anionic and cationic species. The retention equations obtained allow a rationalization of the interactions contributing to retention and separation in the HILIC systems considered. Copyright © 2011 Elsevier B.V. All rights reserved. This article was published in J Chromatogr A and referenced in Journal of Chromatography & Separation Techniques

Relevant Expert PPTs

Recommended Conferences

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

[email protected]

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

[email protected]

1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

[email protected]

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

[email protected]

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

[email protected]

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

[email protected]

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

[email protected]

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

[email protected]

1-702-714-7001 Extn: 9042

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords