Caro, E. and Marce, R.M. and Cormack, P.A.G. and Sherrington, D.C. and Borrull, F. (2004) Molecularly imprinted solid-phase extraction of naphthalene sulfonates from water. Journal of Chromatography A, 1047 (2). pp. 175-180. ISSN 0021-9673Full text not available in this repository. (Request a copy from the Strathclyde author)
A new polymeric sorbent synthesised by exploiting molecular imprinting technology has been used to selectively extract naphthalene sulfonates (NSs) directly from aqueous samples. In the non-covalent molecular imprinting approach used to prepare this polymer, 1-naphthalene sulfonic acid (1-NS) and 4-vinylpyridine (4-VP) were used as a template molecule and functional monomer, respectively, and both dissolved in a mixture of methanol/water (4:1) as porogen together with the cross-linker ethylene glycol dimethacrylate. The new non-covalent molecularly imprinted polymer (MIP) prepared in aqueous environment was used as a sorbent in solid-phase extraction (SPE) to selectively extract a group of naphthalene mono- and disulfonates. When one litre of a standard aqueous solution, which contained a mixture of eight NSs, was percolated through the SPE cartridge, all the NSs were retained on the MIP because of the cross-reactivity of the polymer. Recoveries were higher than 80% for all the compounds even after a clean-up step with methanol (MeOH). The MIP was also used to analyse water from the Ebro river.
|Keywords:||water analysis, cross-reactivity, molecularly imprinted polymers, 1-naphthalene sulfonic acid, Chemistry|
|Subjects:||Science > Chemistry|
|Department:||Faculty of Science > Pure and Applied Chemistry|
|Depositing user:||Mr Derek Boyle|
|Date Deposited:||09 Mar 2006|
|Last modified:||23 Sep 2016 02:09|