Development of zirconia nanoparticles-decorated calcium alginate hydrogel fibers for extraction of organophosphorous pesticides from water and juice samples: Facile synthesis and application with elimination of matrix effects.
In this research, novel zirconia nanoparticles-decorated calcium alginate hydrogel fibers (ZNCAHF) were synthesized through a simple, green procedure. ZNCAHF were used as an adsorbent in the micro-solid-phase extraction (MSPE) of methyl parathion (MP), fenitrothion (FT) and malathion (MT) as model pesticides prior to gas chromatography-mass spectroscopic detection (GC-MS). The composition and morphology of the prepared fiber were characterized by Fourier transform-infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), energy dispersive X-ray diffraction (EDX), and differential scanning calorimetry (DSC). Various parameters affecting fabrication of the fiber (weight ratio of components) and relative extraction recovery (pH, amount of adsorbent, extraction time, salt addition, and desorption conditions) were investigated and optimized. Under optimized conditions, the calibration curves were obtained in the concentration range of 0.01-500ngmL-1 with regression coefficients between 0.9997 and 0.9999. The limits of detection (LOD) (S/N=3) and limits of quantification (LOQ) (S/N=10) of the method ranged from 0.001 to 0.004ngmL-1 and 0.003 to 0.012ngmL-1, respectively. The intra-day and inter-day relative standard deviations (RSDs) were 2.2-5.9% and 3.2-7.8%, respectively. The applicability of the fabricated adsorbent was investigated by extraction of selected organophosphorous pesticides (OPPs) from real samples of juice and water. The obtained relative recoveries were in the range of 90.6-105.4%, demonstrating elimination of matrix effects which can be attributed to the remarkable affinity of OPPs toward ZNCAHF.
['Zare|Maryam|M|', 'Ramezani|Zahra|Z|', 'Rahbar|Nadereh|N|']
D000464:Alginates D000067030:Fruit and Vegetable Juices D008401:Gas Chromatography-Mass Spectrometry D020723:Glucuronic Acid D006603:Hexuronic Acids D020136:Hydrogel, Polyethylene Glycol Dimethacrylate D057230:Limit of Detection D053758:Nanoparticles D010575:Pesticides D052616:Solid Phase Extraction D017550:Spectroscopy, Fourier Transform Infrared D014867:Water D014874:Water Pollutants, Chemical D014961:X-Ray Diffraction D015040:Zirconium
Alginate Organophosphorous pesticides Gas chromatography Micro solid phase extraction Zirconia nanoparticles