Premium
Development of a γ ‐alumina‐ nanoparticle‐functionalized porous polymer monolith for the enrichment of S udan dyes in red wine samples
Author(s) -
Li Wanjun,
Zhou Xiao,
Ye Juanjuan,
Jia Qiong
Publication year - 2013
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201300754
Subject(s) - monolith , wine , porosity , polymer , nanoparticle , chemical engineering , porous medium , chemistry , chromatography , materials science , nanotechnology , organic chemistry , catalysis , food science , engineering
Monolithic materials were synthesized in capillaries by in situ polymerization with N ‐isopropylacrylamide, glycidyl methacrylate, and ethylene dimethacrylate as the monomers, and methanol and PEG as the porogens. With γ ‐alumina nanoparticles attached to the surface of the porous monolithic column via epoxide groups, a novel polymer monolith microextraction ( PMME ) material was prepared with a good mechanical stability and a high extraction capacity. SE M and X ‐ray photoelectron spectroscopy were employed to characterize the modified monolithic column, demonstrating that γ ‐alumina nanoparticles were effectively functionalized onto the monolithic column. In addition, a new method was developed for the analysis of S udan I – IV dyes using PMME coupled with HPLC . In order to obtain the optimum extraction efficiency, the PMME conditions including desorption solvent type, sample pH, sample volume, sample flow rate, and eluent flow rate were investigated. Under the optimum conditions, we obtained acceptable linearities, low LOD s, and good intra‐ and interday RDS s. When applied to the determination of S udan I – IV dyes in red wine samples, satisfactory recoveries were obtained in the range of 84.0–115.9%.