Immobilization of unmodified aminoanthraquinone derivatives onto silica gel surface for solid-phase extraction and pre-concentration of Pb(II)

Ionic liquid-immobilized silica gel as a new sorbent for solid-phase extraction of heavy metal ions in water samples

“…13 SPE can be applied for a broader range of practical design situations than LLE because of the wide variety of sorbent chemistries, fast and automatic procedures. 14 Novel materials with various surface chemistries have been prepared, including modied silica, [15][16][17] graphene oxide, 6,18,19 imprinted polymers, 20,21 magnetic nanoparticles, 22 carbon nanotubes, [23][24][25] polymer, 26,27 and metal-organic framework [28][29][30] which applied as effective sorbents for the extraction of heavy metals.…”