PMID- 31312945 OWN - NLM STAT- MEDLINE DCOM- 20200325 LR - 20210211 IS - 1436-5073 (Electronic) IS - 0026-3672 (Linking) VI - 186 IP - 8 DP - 2019 Jul 16 TI - A nanohybrid composed of polyoxotungstate and graphene oxide for dispersive micro solid-phase extraction of non-steroidal anti-inflammatory drugs prior to their quantitation by HPLC. PG - 534 LID - 10.1007/s00604-019-3694-0 [doi] AB - A nanohybrid was prepared from polyoxotungstate anion and graphene oxide (POT/GO) and characterized in terms of porosity by applying Fourier transform infrared and transmission electron microscopy. The nanohybrid was applied as a sorbent for the dispersive micro solid-phase extraction of the non-steroidal anti-inflammatory drugs (NSAIDs) ibuprofen, diclofenac, and naproxen. Different types of sorbents were compared, and the POT/GO nanohybrid was found to have the best adsorption affinity. The NSAIDs were quantified via HPLC with UV detection. Under the optimum conditions, the limits of detection (at an S/N ratio of 3) range between 0.02-0.03 ng.mL(-1), and the linear response ranges extend from 0.08-200 ng.mL(-1), respectively. The relative standard deviations (RSDs) for five replicates at three concentration levels (0.1, 5 and 100 ng.mL(-1)) of NSAIDs ranged from 4.1 to 6.1%. The applicability of the method was confirmed by analyzing spiked real water samples, and satisfactory results were obtained, with recoveries between 95.6 and 99.6%. Graphical abstract Schematic representation of the polyoxotungstate/graphene oxide nanohybrid preparation. FAU - Amiri, Amirhassan AU - Amiri A AUID- ORCID: 0000-0002-5149-9038 AD - Department of Chemistry, Faculty of Sciences, Hakim Sabzevari University, Sabzevar, 96179-76487, Iran. Amiri_amirhassan@yahoo.com. FAU - Mirzaei, Masoud AU - Mirzaei M AD - Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, 91775-1436, Iran. mirzaeesh@um.ac.ir. FAU - Derakhshanrad, Shadi AU - Derakhshanrad S AD - Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, 91775-1436, Iran. LA - eng PT - Journal Article DEP - 20190716 PL - Austria TA - Mikrochim Acta JT - Mikrochimica acta JID - 7808782 RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - 0 (Polymers) RN - 0 (Tungsten Compounds) RN - 0 (Water Pollutants, Chemical) RN - 0 (graphene oxide) RN - 144O8QL0L1 (Diclofenac) RN - 57Y76R9ATQ (Naproxen) RN - 7782-42-5 (Graphite) RN - 84303-06-0 (polyoxotungstate PM 19) RN - WK2XYI10QM (Ibuprofen) SB - IM MH - Adsorption MH - Anti-Inflammatory Agents, Non-Steroidal/*analysis/isolation & purification MH - Chromatography, High Pressure Liquid/*methods MH - Diclofenac/analysis/isolation & purification MH - Graphite/*chemistry MH - Ibuprofen/analysis/isolation & purification MH - Limit of Detection MH - Nanostructures/*chemistry MH - Naproxen/analysis/isolation & purification MH - Polymers/chemistry MH - Porosity MH - Solid Phase Extraction MH - Spectrophotometry, Ultraviolet MH - Tungsten Compounds/chemistry MH - Water Pollutants, Chemical/analysis OTO - NOTNLM OT - Anion exchange polymer OT - Carbon-based nanomaterial OT - Poly(diallyldimethylammonium chloride) OT - Polyoxometalate OT - River water analysis OT - Sample preparation OT - Tap water analysis OT - Wastewater analysis EDAT- 2019/07/18 06:00 MHDA- 2020/03/26 06:00 CRDT- 2019/07/18 06:00 PHST- 2019/06/13 00:00 [received] PHST- 2019/07/08 00:00 [accepted] PHST- 2019/07/18 06:00 [entrez] PHST- 2019/07/18 06:00 [pubmed] PHST- 2020/03/26 06:00 [medline] AID - 10.1007/s00604-019-3694-0 [pii] AID - 10.1007/s00604-019-3694-0 [doi] PST - epublish SO - Mikrochim Acta. 2019 Jul 16;186(8):534. doi: 10.1007/s00604-019-3694-0.