| Title: | Surfactant-coated carbon nanotubes as pseudophases in liquid-liquid extraction |
| Author(s): | Carrillo-Carrion C; Lucena R; Cardenas S; Valcarcel M; |
| Address: | "Department of Analytical Chemistry, Marie Curie Building (Annex), Campus de Rabanales, University of Cordoba, E-14071 Cordoba, Spain" |
| ISSN/ISBN: | 0003-2654 (Print) 0003-2654 (Linking) |
| Abstract: | "The advantages of surfactant-coated carbon nanotubes (CNTs) as coadjutants in liquid-liquid extraction are systematically considered. The effect of the CNT state (dispersed or suspended in an aqueous medium) is characterized by the single-component solid-liquid isotherms exemplified for benzene. Adsorption isotherms are obtained by means of a headspace-GC-MS method, the recommended instrumental combination when very volatile compounds are involved. Adsorption studies are completed using toluene and n-undecane as model analytes of aromatic and linear hydrocarbons, respectively. The potential of using dispersed carbon nanotubes to improve liquid-liquid extraction is finally evaluated. The liquid-liquid distribution of the two model analytes between an organic phase (n-heptane) and the aqueous dispersion of CNTs is studied via batch extraction and subsequent analysis of the organic phase by GC-MS. A prospective application of this methodology is also given" |
| Notes: | "PubMed-not-MEDLINECarrillo-Carrion, Carolina Lucena, Rafael Cardenas, Soledad Valcarcel, Miguel eng England 2007/05/26 Analyst. 2007 Jun; 132(6):551-9. doi: 10.1039/b701019b. Epub 2007 Apr 27" |
