Fabrication of functional group-rich monoliths for magnetic field-assisted in-tube solid phase microextraction of inorganic selenium species in water samples followed by online chromatographic determination

Abstract

Efficient separation and enrichment is a crucial step in the analysis of Se(IV) and Se(VI). In the present study, for the first time, online monolith-based magnetic field-assisted in-tube solid phase...

Latest Improvements and Expanding Applications of Solid-Phase Microextraction

“…The fabricated monolithic adsorbents present porous and super paramagnetic properties and possess abundant functional groups, which have exhibited satisfactory performance for the capture of inorganic species (mercury, chromium, and selenium). The application of a magnetic field during the extraction procedure has assisted the capture of inorganic–organic complex, with an enhancement in the extraction efficiency. − Furthermore, the electromagnetically vibrated SPME has been used for the effective determination of solute concentration profiles, avoiding solute mass loss and minimizing the disturbance of solute transport and fate processes. Under electromagnetic vibration, the equilibrium extraction times of the organic compounds in aqueous mixtures have decreased from 30 min to less than 10 min …”