Use of gold nanoparticle-coated sorbent materials for the selective preconcentration of sulfonylurea herbicides in water samples and determination by capillary liquid chromatography

► Two new gold nanoparticle coated materials were synthesized. ► The new materials were used as selective sorbents for sulfonylurea herbicides. ► Extraction features of both types of materials were compared. ► Sulfonylurea herbicides were separated and determined by CLC.