Magnetite–graphene oxide composites as a magnetic solid-phase extraction adsorbent for the determination of trace sulfonamides in water samples

Abstract

Magnetite–graphene oxide composites were used for magnetic solid-phase extraction to preconcentrate trace sulfonamides in water samples before determination by high-performance liquid chromatography.

Investigation of the adsorption mechanism and preconcentration of sulfonamides using a porphyrin-functionalized Fe 3 O 4 -graphene oxide nanocomposite

“…44.2 mg/g for SDM, 28.3 mg/g for SDZ, 10.5 mg/g for SG, 36.3 mg/g for SMZ and 26.6 mg/g for SPY, respectively. Compared with the results of a previous report on the adsorption of SAs [30], the adsorption capacity of the materials was significantly improved (the maximum adsorption capacity of Fe 3 O 4 -GO was 3.20 mg/g for SDD and 3.17 mg/g for SDZ).…”

“…According to our previous work [30], the adsorption capacity of Fe 3 O 4 -GO was 3.17-4.35 mg/g for three SAs. Therefore, to improve the adsorption capacity of this adsorbent, we modified the Fe 3 O 4 -GO.…”

Magnetic Solid-Phase Extraction of Organic Compounds Based on Graphene Oxide Nanocomposites

“…The GO/Fe 3 O 4 magnetic nanocomposite has been employed for the extraction of 2,4,4 -trichlorobiphenyl (PCB 28) [34] and atrazine [48] from water samples prior to their determination by gas chromatography-mass spectrometry (GC-MS). Furthermore, di-2-ethylhexyl phthalate (DEHP) [49], polycyclic aromatic hydrocarbons (PAHs) [32], 2,4,6-trinitrotoluene (TNT) [41], malachite green and crystal violet [50], the cytostatic drugs imatinib and doxorubicin [51] as well as sulfonamides [52] have been extracted from water samples prior to their separation with HPLC and determination using a UV or DAD detector. Figure Reproduced with permission from [57].…”

Recent advances in metal‐organic frameworks and covalent organic frameworks for sample preparation and chromatographic analysis

“…Thus, rapid, efficient sample preparation methods have been developed. Examples of developed pretreatment methods include dispersive solid-phase extraction (DSPE) [6,7], micro-solidphase extraction (-SPE) [8] and magnetic solid-phase extraction (MSPE) [9,10]. Moreover, various materials have been amide); POFs, porous organic frameworks; SBSE, stir bar sorptive extraction; SCU, Sichuan University; SNW, Schiff base networks; SPE, solid-phase extraction; SPME, solidphase microextraction; SWV, square-wave voltammetry; TMU, Tarbiat Modares University; UPLC, ultra-performance liquid chromatography; VACs, volatile aromatic compounds; ZIF, zeolitic imidazolate framework used in these methods, including graphene oxide (GO) [5,[9][10][11], molecular imprinted polymers (MIPs) [12], and other composites.…”