Chemically Modified Silica in Sorption-Instrumental Analytical Methods

The review briefly discusses the basic data on the preparation of porous silicas containing surface covalently bound organic ligands which specifically interact with analyte molecules. Single-stage (immobilization of the modifier) and two-stage (assembly on the surface) methods of their synthesis are consistently discussed. The data on the use of such sorbents as collectors of inorganic, organic, and biologically active substances are presented. Numerous examples of the use of such materials in sorption-instrumental analytical methods are demonstrated, and it is shown that this class of sorbents is the most preferable.