454. supercritical fluid chromatography (SFC) Also known as ‘convergence chromatography’, a chromatographic technique that employs a supercritical fluid as the mobile phase.
455. superficially porous (core–shell) particle
technology In LC columns, the use of particles that have a nonporous core but fully porous outer layer.
456. supernatant The liquid layer resting above a lower layer or solid residue, such as after centrifugation following protein precipitation from plasma.
457. supported-liquid extraction Sample extraction technique analogous to liquid–liquid extraction but with a different protocol that involves sample application to a solid support, composed of modified diatomaceous earth, and from which the analytes are subsequently eluted with water-immiscible organic solvent.