Sulforaphane (SFN) is a natural isothiocyanate compound widely abundant in cruciferous vegetables with multiple bioactive functions. However, traditional analytical methods for the extraction and determination of SFN are cumbersome, time-consuming, and low sensitivity with large amounts of organic solvents. Herein, novel magnetic COF-on-COFs ( …
A simple, rapid and selective method for the separation/preconcentration and determination of diclofenac (DFC) based on the combination of extraction with the magnetic molecularly imprinted polymer (MMIP) and analysis via fiber optic-linear array spectrophotometer was developed. MMIP were prepared by precipitation polymerization, using SiO2-coated …
In the SMA, the wire is magnetized by a 12.7 × 3.175 [mm 2] magnet, magnetization through the 12.7 [mm] dimension.The magnet is positioned at a distance (L2 = 530 [μm]) to the right of the wire ...
To further simplify the cumbrous centrifugation step in phase separation, magnetic ionic liquids (MILs) have been proposed and reported in 2004 [21, 22]. ... economic and environmentally friendly that can be successfully applied to the determination of trace estrogens in complex samples and ...
The separation of magnetic nanoparticles from the extraction solution could be easily carried out by applying an external magnetic field. Flame atomic absorption spectrophotometry was used for determination of the extracted target ion. ... A new magnetic tailor made polymer for separation and trace determination of cadmium ions by flame …
Based on the high sensitivity and stable fluorescence of CdTe quantum dots (QDs) in conjunction with a specific DNA aptamer, the authors describe an aptamer-based fluorescence assay for the determination of …
Advanced green capture of microplastics from different water matrices by surface-modified magnetic nanoparticles. Separation and Purification Technology 2025, 354, 128813. ... Analytical determination …
The basic principle of batch magnetic separation is very simple. Magnetic carriers bearing an immobilized affinity or hydrophobic ligand or ion-exchange groups, or …
This methodology, which adeptly combines the magnetic separation capabilities of Fe 3 O 4 @GO with the miRNA recovery-enhancing properties of urea, stands out particularly for potential applications in high-throughput and real-time settings, where rapid, efficient, and safe miRNA extraction methods are crucial. The findings illuminate the ...
Selective separation and determination of glucocorticoids in cosmetics using dual-template magnetic molecularly imprinted polymers and HPLC ... magnetic properties and adsorption characteristics of the obtained dual-template MMIPs were studied by field emission scanning electron microscopy, dynamic light scattering, Fourier transform infrared ...
, d vortexed r 1min. Magnet s used to sep-eeMNPsagain.,en,eeluentsadjustedtopH 0 with phosphoric acid d d h a 0.22 μm n e Flter. A l 20 μL of n s injected into e HPLC system r DQ or PQ determination.,e complete s of E system combined with HPLC–UVrnofPQdDQsnin Figure 2.,e extraction e@ciency (1) d e amount of e adsorbed r unit mass of e t (ad-
The experimental parameters affecting separation efficiency and spectrophotometric determination were optimized. Under optimum conditions and at an analytical wavelength of 468 nm, the calibration plot is linear in the 5.0–160.0 ng mL −1 concentration range, and the limit of detection (estimated at S/N = 3) is 1.5 ng mL −1. The …
Magnetic separation: based on the generation of magnetic forces on the particles to be separated, which are higher than opposing forces such as gravity or centrifugal forces. This …
Magnetic separation presents significant potential for culture-independent detection of foodborne pathogens in food samples. In this study, we compared two magnetic separation pretreatment strategies for molecular detection using (q)PCR assays targeting Staphylococcus aureus in milk as models. The first approach employed amino-modified silica …
Choice selection and application variation of physical beneficiation techniques usually employed on heavy minerals (HMs) depends greatly on mineralogy, composition, shape, particle size distribution, and physicochemical properties of the minerals. Recent advancements in the applications of HM products by modern science, engineering, technological, and …
A magnetic dispersive solid phase extraction method coupled with high-performance liquid chromatography was proposed for the simultaneous separation and determination of paraquat (PQ) and diquat (DQ) in human plasma and urine samples. Based on the reduction ...
An environmentally friendly and fast sample treatment approach that integrates accelerated microwave digestion (MWD), solid phase extraction, and magnetic separation into a single step was developed for the …
The magnetic separation of various targets has already been well developed, thus sensitive determination of trace MNBs becomes the most important challenge for electromagnetic biosensors. A typical example was shown in Fig. 6 [89]. The electromagnetic detector or reader is the core part of this biosensor, mainly including three coils: (1) an ...
The whole experimental procedure is shown in Fig. 1. 1.5 mg of nZVI was added to 50 mL of sample solution for pre-concentration of arsenic and cadmium. After 30 min, the nZVI was separated by a magnet and then completely dissolved with 5% HCl followed by addition of 5% (m/v) l-ascorbic acid and thiourea.The obtained solution was mixed with 2% (m/v) KBH 4 …
Magnetic separation is a process that uses magnets to separate magnetic materials from non-magnetic ones in a mixture. This technique takes advantage of the varying magnetic properties of different substances. The primary component involved in this process is the magnetic …
The higher the interfacial area between the extractant and sample, the faster the mass transfer, thus equilibrium is reached sooner. After extraction, an external magnetic field was applied to separate the enriched magnetic sorbent, and the sorbent phases with magnetic properties enable assisted magnetic separation of the aqueous sample.
Magnetic separation is a versatile technique used in sample preparation for diagnostic purpose. For such application, an external magnetic field is applied to drive the …
A simple and sensitive method based on the magnetic solid phase extraction with modified magnetic nanoparticles followed by high performance liquid chromatography with fluorescence detection has been developed for extraction and determination of aflatoxins B 1 (AFB 1) and B 2 (AFB 2) in cereal products.Magnetic nanoparticle coated with 3 …
Magnetic separation process is a combination and procedure for separating magnetic materials from non-magnetic materials by utilizing magnetic separation.
Inside a spin-exchange relaxation-free (SERF) co-magnetometer with a high-pressure buffer gas atomic cell, the magnetic field gradient causes the decoherence of atomic spins to produce magnetic-field gradient relaxation. This paper presents a new method for the accurate measurement of magnetic field gradient relaxation of alkali metal atoms and inert …
This work describes the development of an integrated analytical system that enables high-throughput density measurements of diamagnetic particles (including cells) using magnetic levitation (MagLev), 96-well plates, and a flatbed scanner. MagLev is a simple and useful technique with which to carry out density-based analysis and separation of a broad …
Magnetic Separation 2.1 Introduction The differences in magnetic susceptibility can be utilized to separate a valuable mineral from its gangue through the magnetic separation method. Similar to other materials, minerals are generally classified into three main categories, namely diamagnetic, paramagnetic, and ferromagnetic.
In recent decades, it has become one of the key separation technologies in the utilization of the ores that contain magnetic minerals, such as iron oxides, ilmenite, wolframite, and manganese, and in the removal of …
A magnetic separator is a device placed behind the target position which will selectively transport nuclei, produced in a reaction, to its focal plane where they can be detected and identified …
DOI: 10.1016/j.aca.2023.342197 Corpus ID: 266802685; A novel deep eutectic solvent modified magnetic covalent organic framework for the selective separation and determination of trace copper ion in medicinal plants and environmental samples.
