Solid-phase extraction (SPE) is the gold standard for sample preparation in chromatographic analysis. It is used to capture, clean, and concentrate samples while removing interfering compounds, ...

In recent years, magnetic nanoparticles (MNPs) have found extensive use in SPE applications owing to the wide range of available surface chemistries, their very high specific surface area (and ...

pH can have a huge effect on any SPE technique and can be utilized to enhance retention of compounds on an SPE product. For instance, the reversed phase technique can be used to adjust pH to ...