SciELO - Scientific Electronic Library Online

 
vol.90 issue1  suppl.1New trends in plasmonic (bio)sensingAdvances in enzyme bioelectrochemistry author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Anais da Academia Brasileira de Ciências

Print version ISSN 0001-3765On-line version ISSN 1678-2690

Abstract

ROCHA, FÁBIO R.P.; BATISTA, ALEX D.; MELCHERT, WANESSA R.  and  ZAGATTO, ELIAS A.G.. Solid-phase extractions in flow analysis. An. Acad. Bras. Ciênc. [online]. 2018, vol.90, n.1, suppl.1, pp.803-824. ISSN 0001-3765.  https://doi.org/10.1590/0001-3765201820170513.

Coupling solid-phase extraction (SPE) to flow systems has promoted a synergistic development. Whereas SPE mechanization leads to improved precision and higher sample throughput, as well as diminishes systematic errors and contamination risks, analyte concentration and separation from the sample matrix provides a remarkable impact on detectability and selectivity in flow analysis. Historical aspects, main cornerstones, tips for system design, and recent applications are critically reviewed, in the context of analyte(s) separation/concentration, sample clean-up, and release of sorbed chemical species involving both packed (e.g. mini-columns, cartridges, and disks) or fluidized (e.g. beads and magnetic materials) particles. Novel (bio)sorbents, selective synthetic materials, and stationary phases for low-pressure chromatography are also discussed. Moreover, the feasibility of SPE for sample treatment before chromatographic separation, as well as the exploitation of direct measurements on the solid phase (optosensing) are emphasized.

Keywords : beads; flow analysis; in-line analyte concentration; in-line sample treatment; sample clean-up; solid-phase extraction.

        · text in English     · English ( pdf )