Abstract
We reported the application of graphene as a novel stationary phase in open-tubular capillary electrochromatography (OTCEC). The OT column was easily fabricated by electrostatic assembly of poly(diallydimethylammonium chloride) followed by self-adsorption of negatively charged graphene. The chromatographic properties of graphene-coated OT column were investigated by separation of nitroaniline isomers through variation of the buffer pH, sodium dodecyl sulfate concentration and separation voltage. The results demonstrate the application of graphene in OTCEC greatly improves the separation by largely enhancing the surface area thus increasing stationary/mobile phase interaction. The proposed OT column exhibits good repeatability with run-to-run RSD of retention time as low as 1.5% (n=5), and excellent stability for at least two-week usage with total ∼200runs. The method was successfully applied for analysis of nitroaniline isomers in hair dye samples.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
