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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Solid Phase Extraction Based on Magnetic Nanoparticles

Pp. 277-305 (29)

Ángel Ríos and Mohammed Zougagh

Abstract

Magnetic nanoparticles (MNPs) are attracting great interest for developing solid phase extraction (SPE). Nanoparticles involved in SPE processes present clear advantages with respect conventional SPE materials because of their high stability, simple preparation, and the short time involved in the sample preparation; avoiding time-consuming column passing and filtration, as it is in conventional SPE methods. In this e-book chapter, the progress involving MNPs used for SPE is presented and discussed. Taken into account the different types of MNPs used in this field, the different MNPs obtained by attaching inorganic components (e.g., metal oxides, carbon, noble and semiconductor metals), or organic molecules (e.g., surfactants and magnetic molecularly imprinted polymers, MMIP), are described through recent reported analytical applications of MNPs in SPE. The potential transfer of these analytical tools for daily work in routine laboratories is also pointed out.

Keywords:

Analytical applications, Bioanalytical analysis, Clean-up, Environmental analysis, Food analysis, Functionalization, Magnetic nanoparticles, Magnetic solid phase extraction, Metal oxides, Modified surfactants, Molecular imprinted polymers, Preconcentration, Sample preparation, Silica, Synthesis schemes, Titanium oxide, Zirconium-coated.

Affiliation:

Department of Analytical Chemistry and Food Technology, Faculty of Chemistry, University of Castilla – La Mancha. Av. Camilo José Cela, 10. E-13004 Ciudad Real, Spain.