Synthesis of magnetic date stone biochar for solid phase extraction of NSAIDs from water samples

Abstract

This study deals with the potential of by-products, as sorbent for the microextraction of nonsteroid anti-inflammatory drugs (NSAIDs) from aqueous solution. Magnetic solid phase extraction of NSAIDs and their determination...

Green magnetic snail shell hydroxyapatite sorbent for reliable solid‐phase extraction of pesticides from water samples

“…Immobilization of magnetic nanoparticles onto HAP was performed by hydrothermal approach in the presence of iron salt, according to the method employed by [26]. A total of 0.3 g of HAP was mixed with iron (III) chloride and iron (II) chloride at a mass ratio 1:3, 50 mL of ethylene glycol, and 3 g of sodium acetate (NaOAc).…”

“…The ultimate mixture was placed into a Teflon-lined autoclave and then heated at 200 • C for 48 h. The formed HAP was washed with distilled water until pH = 7 and dried at 70 • C under a vacuum. Immobilization of magnetic nanoparticles onto HAP was performed by hydrothermal approach in the presence of iron salt, according to the method employed by [26]. A total of 0.3 g of HAP was mixed with iron (III) chloride and iron (II) chloride at a mass ratio 1:3, 50 mL of ethylene glycol, and 3 g of sodium acetate (NaOAc).…”

The potential of lignocellulosic biomass for magnetic solid phase extraction of naproxen from saliva samples

“…A Doelhert matrix design with four factors was used to optimize the separation conditions of naproxen from aqueous solution using a minimal number of experiments. 16,41 The inuence of operating parameters on the adsorption efficiency (%) of naproxen was investigated by varying the independent variables: extraction volume (U 1 ), extraction time (U 2 ), elution volume (U 3 ), and adsorbent mass (U 4 ), each of which was set at two different levels as seen in Table 1. According to this design, 21 experiments are required to estimate the terms of a second order equation to determine the terms of the equation and three additional repeats are generally performed in the domain Analytical Methods Paper center in order to estimate the errors in the experiment.…”

“…[10][11][12] Currently, several studies showcase the utilization of biochars in SPE cartridges, MSPE, or solid phase microextraction (SPME) techniques to extract pollutants, such as triazine herbicides, 13 organophosphorus pesticides, 14,15 and anti-inammatory drugs. 16 MSPE, based on the use of a magnetic sorbent, is a better alternative approach that can facilitate the separation of a powder material with an external magnet, eliminating ltration and centrifugation steps and thus providing the advantage of easy operation. 7,[17][18][19][20][21][22][23] In the eld of magnetic solid phase extraction (MSPE), magnetic biochar has emerged as a valuable tool.…”

“…16 MSPE, based on the use of a magnetic sorbent, is a better alternative approach that can facilitate the separation of a powder material with an external magnet, eliminating ltration and centrifugation steps and thus providing the advantage of easy operation. 7,[17][18][19][20][21][22][23] In the eld of magnetic solid phase extraction (MSPE), magnetic biochar has emerged as a valuable tool. This innovative material combines the adsorption capabilities of biochar with the magnetic properties that facilitate separation and regeneration processes.…”