title: Preparation and evaluation of lauryl methacrylate monoliths with embedded silver nanoparticles for capillary electrochromatography.
abstract: In this article, capillary columns constituted by lauryl methacrylate monoliths with embedded silver nanoparticles (AgNPs) were developed and tested. Two incorporation approaches of AgNPs in monoliths were explored. The AgNPs were either photogenerated in situ during polymerization of the monolith by UV irradiation, or incorporated to the polymerization mixture (ex situ). The influence of the AgNP concentration on the morphological and chromatographic properties of the polymer matrix was investigated, and both the in situ and ex situ approaches were comparatively discussed. The morphology of the monoliths was characterized by electron microscopic techniques, and their electrochromatographic performance was also evaluated with test mixtures of neutral compounds (sterols, fatty acid methyl esters, tocopherols, and polyaromatic hydrocarbons).
authors: Department of Analytical Chemistry, Faculty of Chemistry, University of Valencia, Burjassot, Spain.
authors: Maria
authors: M
authors: Navarro-Pascual-Ahuir
authors: Maria J
authors: MJ
authors: Lerma-García
authors: Guillermo
authors: G
authors: Ramis-Ramos
authors: Ernesto F
authors: EF
authors: Simó-Alfonso
authors: José M
authors: JM
authors: Herrero-Martínez
mesh_terms: D053801:Capillary Electrochromatography / Q000295:instrumentation* / Q000379:methods*; D004867:Equipment Design; D004952:Esters / Q000032:analysis / Q000737:chemistry; D005227:Fatty Acids / Q000032:analysis / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D008689:Methacrylates / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis; D015203:Reproducibility of Results; D012834:Silver / Q000737:chemistry*; D013261:Sterols / Q000032:analysis; D024505:Tocopherols / Q000032:analysis; D014466:Ultraviolet Rays
chemical_list: D004952:Esters; D005227:Fatty Acids; D008689:Methacrylates; D011084:Polycyclic Aromatic Hydrocarbons; D013261:Sterols; C115846:dodecyl methacrylate; D012834:Silver; D024505:Tocopherols