Preconcentration of aqueous solution of aromatic compounds was successfully carried out with an extraction capillary packed with a bundle of polymer-coated filaments. The extracted analytes were sequentially eluted with a flow of pure water using programmed temperature elevation of the extraction capillary. The results clearly suggest that the polymer-coated fiber-packed capillary could be employed as a sample preparation medium for the analysis of aqueous matrices. The fraction of interest could be transferred to conventional microcolumn liquid chromatography (LC) allowing a heart cutting analysis of aqueous matrices. Stability of the fiber-packed capillary was confirmed with pure water as the mobile phase at elevated temperatures.
A bundle of polymer-coated filaments was successfully introduced as an extraction medium for the preconcentration of an aqueous solution of aromatic compounds. The extraction was simply carried out with pumping the aqueous sample solution to the extraction capillary at ambient temperature. The extracted analytes were sequentially eluted with a flow of pure water using temperature-programmed heating of the extraction capillary in an oven. The results clearly suggest that the polymer-coated fiber-packed capillary could be employed in the sample preparation process for the analysis of various aqueous samples. Introducing the fractions eluted from the fiber-packed capillary to a conventional microcolumn liquid chromatography (micro-LC) system via a home-made valve-based modulator, an on-line coupled extraction/separation system was developed and a possibility to a pseudo-two-dimensional (pseudo-2D) LC separation of aromatic compounds in aqueous matrices has also been demonstrated.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.