Elecrtospun methacrylic acid‐modified polystyrene nanofiber as solid phase adsorbent for preconcentration of methyl green from aqueous samples

Abstract

This research describes the development of a new design of electrospun nanosorbent, polystyrene/methacrylic acid nanofibers (PS/MAA NFs), for the extraction and preconcentration of Methyl green (MG) from aqueous samples via solid phase extraction (SPE). The experimental parameters affecting the SPE extraction efficiency including sample flow rate through the sorbent, ionic strength and pH of the sample solution, weight of sorbent, volume and type of eluent were investigated, and optimized. Under the optimum conditions (40 ml of 1 mg/L MG, pH: 5, sample flow rate: 2 ml/min, 0.1 g PS/MAA NFs and eluting solvent: 3 ml MeOH), the calibration curve was linear in the MG concentration range of 25–1,000 μg/L. The limit of detection and enhancement factor of the proposed method, for extraction from 40 ml sample solution, were obtained as 10 μg/L and 8.3, respectively. MG dye was extracted from different real samples (urban, mineral and river waters) using the proposed adsorbent and the results showed that PS/MAA NFs were suitable for preconcentration and determination of trace amount of methyl green in wastewater samples.

Electromembrane extraction‐high‐performance liquid chromatography‐ultraviolet detection of phenobarbital and phenytoin in human plasma, saliva, and urine

“…Classical methods like liquid-liquid and solid-phase extraction suffer from a couple of disadvantages, that is, time-consuming process, lengthy and multi-stage process, high organic solvent, and sample volume. [19][20][21][22] During the last two decades, different miniaturized extraction methods have been introduced in view of downscaling, reduced organic solvent use and simplicity. Solid-phase microextraction is a downscaled rendering of solid-phase extraction, while in Liquid-phase microextraction, analytes are concentrated from a fluid sample into a minute portion of an organic solvent which is water nonmiscible.…”

Fabrication of Electrospun Exfoliated Graphite Nanosheets/Polystyrene composite nanofiber mats

“…Polystyrene has also been used to form the nanofiber nanostructures. 4,5 Polystyrene has been commonly used in the automobile parts, electronics, household usages, plastic toys, etc. The high-impact polystyrene has been developed to reduce the problem of structural stiffness.…”