Mixed-mode ion-exchange polymeric sorbents: dual-phase materials that improve selectivity and capacity

作者：Font****s Nuria^*; Cormack Peter A G; Marce Rosa M; Borrull Francesc

来源：TrAC-Trends in Analytical Chemistry, 2010, 29(7): 765-779.

DOI：10.1016/j.trac.2010.03.015

• Analyte
• Ion-exchange material
• Capacity
• Complex sample matrix
• Matrix
• Mixed-mode polymeric sorbent
• Selectivity
• Solid-phase extraction

In this article, we describe mixed-mode polymeric sorbents, which, in a single material, enhance the selectivity and the capacity of the extraction process. We have structured the article around the four types of mixed-mode sorbents (i.e. strong/weak and cation/anion-exchange materials).
We cover different aspects of these materials, starting with a proper understanding of their morphological and chemical properties, so that the appropriate sorbent can be selected for each particular case. We deal with another important issue the solid-phase extraction protocol recommended for each type of sorbent to enhance its specific properties. We also provide a list of all the mixed-mode polymeric sorbents both commercially available and prepared in-house. Finally, we discuss the leading applications of the types of analytes and the matrices extracted using these materials and illustrate them with selected examples.

• 出版日期2010-8