Jump to main content
Jump to site search


A functionalized multi-walled carbon nanotube-based composite monolith as a solid-phase extraction adsorbent for on-line purification and enrichment of ursolic acid in medicinal plants

Author affiliations

Abstract

A novel poly(f-MWCNTs-co-ST-co-EDMA) monolith was prepared using functionalized multi-walled carbon nanotubes (MWCNTs) and styrene (ST) as comonomers and ethylene glycol dimethacrylate (EDMA) as the crosslinker. The surface morphology and internal structure of the monolith were determined by scanning electron microscopy (SEM), nitrogen adsorption–desorption isotherm and mercury intrusion porosimetry. The monolith possessed a homogeneous and continuous structure and large surface area. The monolith was used as the sorbent for on-line enrichment and purification of ursolic acid. The linear range was 0.0002–3.5 mg mL−1; the limit of detection (LOD) and the limit of quantitation (LOQ) were 0.52 μg mL−1 and 1.72 μg mL−1, respectively. The intra-day and inter-day precisions, which were expressed as the relative standard deviation (RSD), were no more than 0.76% and 1.51%, respectively. The recoveries were between 94.05% and 109.68% in several medicinal plants. The composite monolith showed low back pressure and high adsorption capacity for the enrichment and purification of ursolic acid.

Graphical abstract: A functionalized multi-walled carbon nanotube-based composite monolith as a solid-phase extraction adsorbent for on-line purification and enrichment of ursolic acid in medicinal plants

Back to tab navigation

Article information


Submitted
06 Nov 2019
Accepted
27 Dec 2019
First published
27 Dec 2019

Anal. Methods, 2020, Advance Article
Article type
Paper

A functionalized multi-walled carbon nanotube-based composite monolith as a solid-phase extraction adsorbent for on-line purification and enrichment of ursolic acid in medicinal plants

H. Yu, H. Liu, C. Yang, X. Pang, M. Zhang, H. Yan, L. Bai and D. Han, Anal. Methods, 2020, Advance Article , DOI: 10.1039/C9AY02395J

Social activity

Search articles by author

Spotlight

Advertisements