A hierarchical composite adsorbent of cotton fibers modified with a hydrogel incorporating a metal organic framework and cetyl trimethyl ammonium bromide for the extraction and enrichment of phthalate esters

摘要: Abstract A hierarchical microcomposite adsorbent was fabricated to extract phthalate esters in beverages. MIL-101 metal organic frameworks (MOFs) and cetyl trimethyl ammonium bromide (CTAB) were incorporated into alginate hydrogel be coated on cotton fibers. The fibers packed a pipette tip used enrich esters. To obtain the best extraction performance, short analysis time less solvent consumption, affecting parameters, including type of adsorbent, amount CTAB preparation, ionic strength, sample pH, volume desorption its evaluated. Under optimized conditions, good linearity obtained from 0.5 200 μg L−1 with detection limit 0.15 μg L−1. Satisfactory recoveries five phthalates achieved range 85.2–97.8% acceptable RSDs below 5%. developed is simple operate, robust accurate could applied as an alternative polar toxic compounds various matrices.