Improved Separation and Adsorption of Ciprofloxacin Using Magnetic Graphene Oxide in Water Analysis Rinawati, Amelia Rizky Az-Zahra, Dian Septiani Pratama, Widiarti, Agung abadi Kiswandono, Herlian Eriska Putra
University of Lampung
BRIN, Bandung
Abstract
Water pollution caused by antibiotic residues, particularly ciprofloxacin (CIP), has become a serious global issue as it threatens aquatic ecosystems. This study aims to modify Graphene Oxide (GO) into Magnetic Graphene Oxide (MGO) to be used as an adsorbent in the Dispersive Solid Phase Extraction (DSPE) technique for the preparation and monitoring of CIP residues in aquatic environments. MGO was synthesized via the coprecipitation method by combining GO with magnetic Fe3O4 particles, which impart magnetic properties and facilitate the separation process in DSPE. The characterization of MGO was carried out using Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX), and UV-Vis spectrophotometry. The results showed that MGO possesses functional groups that support CIP adsorption, with optimal adsorption conditions at pH 5, an MGO mass of 20 mg, and a contact time of 40 minutes. The adsorption efficiency of MGO reached 75.28%, which is higher than that of GO at only 65.53%. This study demonstrates that MGO can be used as an adsorbent for CIP antibiotics and offers an easy separation process in the DSPE technique for monitoring CIP antibiotic residues in aquatic environments.
Keywords: Dispersive solid phase extarction, antibiotic, magnetic
