Analytical Microextraction Techniques

Analytical Microextraction Techniques

Sample treatment has been the focus of intensive research in the last 20 years since it still remains a bottleneck in precise analytical procedures. The low concentration of the target analytes, the ...
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Stir Bar Sorptive Extraction and Related Techniques

Pp. 219-240 (22)

José Manuel Florêncio Nogueira

Abstract

From the sorption-based methods available nowadays, stir bar sorptive extraction (SBSE) became a well-established analytical technique for sample preparation, in which hundreds of applications in almost all scientific areas have already been proposed in the literature. This remarkable analytical tool shows great capacity for static microextraction and outstanding performance to operate at the ultratrace level, in particular for the analysis of complex systems. Furthermore, is very effective, present easy manipulation in comparison to other alternative techniques and great reproducibility for the analysis of priority and emerging organic compounds. Recently, related static microextraction techniques were introduced, with particular emphasis to bar adsorptive microextraction (BAμE) that operates under the floating sampling technology, in which has demonstrated high analytical capacity and remarkable performance. This novel concept has also proved great effectiveness for ultra-trace analysis of organic compounds with polar characteristics, in particular from complex systems. The present contribution describes the fundamental principles, the experimental methodology, the main applications, as well as, the analytical potential of these novel microextraction techniques.

Keywords:

Activated carbons, BAμE, Enrichment methods, Floating sampling, GC-MS, HS, LC-MS, LD, Microextraction techniques, Nanostructured materials, PDMS, Polymeric coatings, Real matrices, Sample preparation, SBSE, Sorbent phases, Sorption-based methods, Static microextraction TD, Trace analysis.

Affiliation:

University of Lisbon, Faculty of Sciences, Chemistry and Biochemistry Department and Centre of Chemistry and Biochemistry, Campo Grande, Ed. C8, 1749-016 Lisbon, Portugal.