Caro Ester, Marcé Rosa M, Cormack Peter A G, Sherrington David C, Borrull Francesc
Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Imperial Tarraco 1, 43005 Tarragona, Spain.
J Chromatogr A. 2004 Aug 27;1047(2):175-80. doi: 10.1016/j.chroma.2004.07.015.
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.
一种通过利用分子印迹技术合成的新型聚合物吸附剂已被用于直接从水样中选择性提取萘磺酸盐（NSs）。在用于制备该聚合物的非共价分子印迹方法中，1-萘磺酸（1-NS）和4-乙烯基吡啶（4-VP）分别用作模板分子和功能单体，二者均与交联剂乙二醇二甲基丙烯酸酯一起溶解在甲醇/水（4:1）的混合物中作为致孔剂。在水性环境中制备的新型非共价分子印迹聚合物（MIP）用作固相萃取（SPE）中的吸附剂，以选择性提取一组萘单磺酸盐和二磺酸盐。当一升含有八种NSs混合物的标准水溶液通过SPE柱时，由于聚合物的交叉反应性，所有NSs都保留在MIP上。即使在用甲醇（MeOH）进行净化步骤后，所有化合物的回收率仍高于80%。该MIP还用于分析埃布罗河的水。
