Abstract:
The synthesized iron crosslinked alginate magnetic graphene oxide (Fe-alg-MGO) was used as a solid phase nanomaterial for the extraction of resorcinol (RS) and benzophenone-3 (BP-3) using high performance liquid chromatography with UV detector. The nanomaterial was characterized through advanced spectroscopic techniques, for example Fourier transform infra-red spectroscopy (FTIR) for the determination of different functional groups, Scanning electron microscopy (SEM) for surface morphology, X-ray diffraction (XRD) for phase determination and energy dispersive X ray spectroscopy (EDX) for elemental composition. The experimental conditions including pH, contact time without shaking and with shaking, shaking speed, mass of adsorbent, concentration of analytes and temperature were studied and optimized. At optimum conditions the adsorption capacity is 4.63 mg/g for RS and 4.98 mg/g for BP-3. The adsorption process follow pseudo-second order kinetics due to high value of R2 as compared to the values obtained from pseudo-first order kinetics as well as the qe values (4.71 mg/g for RS and 5.02 mg/g for BP-3) values obtained from pseudo-second order kinetics are close to the experimental qe values. Similarly isotherm study support Langmuir adsorption isotherm due to high R2 value as well as Langmuir qe value for both the analytes were very close the experimental qe values. Thermodynamic study suggested the exothermic and spontaneous process. Analytical parameters were also calculated. Limit of detection (LOD) was 3.12 ngmL-1 and 6.41 ngmL-1 for RS and BP-3 respectively. The solvents used for extraction were water, methanol, acetonitrile and mixture of methanol and acetonitrile. Maximum extraction was obtained with mixture of methanol and acetonitrile. The extraction recovery with RSD for RS is 91.28±2.85% and for BP-3 is 95.56±1.96%. The proposed method was successfully applied to two real water samples, river water and UV filter cream.
Page(s):
284-284
DOI:
DOI not available
Published:
Journal: Abstract Book on International Conference on Food and Applied Sciences (ICFAS-23) 3-5 August 23, Volume: 0, Issue: 0, Year: 2023
Keywords:
benzophenone3
,
adsorption and extraction
,
Magnetic solid phase extraction
,
FealgMGO nanocomposite
,
Resorcinol