Magnetic dispersive micro solid-phase extraction for trace mercury pre-concentration and determination in water, hemodialysis solution and fish samples

Es’haghi, Zarrin; Bardajee, Ghasem Rezanejade; Azimi, Salameh

doi:10.1016/j.microc.2016.03.005

Cited by 34 publications

(4 citation statements)

References 32 publications

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“…Recently, a variation to the MSPE method, namely magnetic dispersive micro-solid-phase extraction has been introduced. This technique requires only minute amounts of the solvents and sorbents for the extraction [16]. MSPE and magnetic dispersive micro-solid-phase extraction have been successfully applied to determine the concentrations of organic compounds and heavy metals in different types of aqueous and food matrices [17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Dispersive liquid–liquid microextraction combined with dispersive solid‐phase extraction for gas chromatography with mass spectrometry determination of polycyclic aromatic hydrocarbons in aqueous matrices

Hassan

Raoov

Sijam

et al. 2018

J of Separation Science

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This study describes a dispersive liquid-liquid microextraction combined with dispersive solid-phase extraction method based on phenyl-functionalized magnetic sorbent for the preconcentration of polycyclic aromatic hydrocarbons from environmental water, sugarcane juice, and tea samples prior to gas chromatography with mass spectrometry analysis. Several important parameters affecting the extraction efficiency were investigated thoroughly, including the mass of sorbent, type and volume of extraction solvent, extraction time, type of desorption solvent, desorption time, type and amount of salt-induced demulsifier, and sample volume. Under the optimized extraction and gas chromatography-mass spectrometric conditions, the method revealed good linearity (10-100000 ng/L) with coefficient of determination (R ) of ≥0.9951, low limits of detection (3-16 ng/L), high enrichment factors (61-239), and satisfactory analyte recoveries (86.3-109.1%) with the relative standard deviations < 10% (n = 5). The entire sample preparation procedure was simple, rapid and can be accomplished within 10 min. This method was applied (after pretreatment) to 30 selected samples, and the presence of studied analytes was quantified in 17 samples.

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Section: Introductionmentioning

confidence: 99%

Dispersive liquid–liquid microextraction combined with dispersive solid‐phase extraction for gas chromatography with mass spectrometry determination of polycyclic aromatic hydrocarbons in aqueous matrices

Hassan

Raoov

Sijam

et al. 2018

J of Separation Science

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“…In recent years, some novel adsorbents also were introduced to enrich low-content mercury species in water and obtained satisfactory enriching effects. 22,24 However, these home-made SPE cartridges could not tolerate large volume sample. Selecting a suitable SPE cartridge remains essential for sensitive mercury speciation in water.…”

Section: Figmentioning

confidence: 99%

Sensitive Mercury Speciation Analysis in Water by High-Performance Liquid Chromatography-Atomic Fluorescence Spectrometry Coupling with Solid-Phase Extraction

Chen

Zhang

et al. 2021

ANAL. SCI.

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An efficient method based on high performance liquid chromatography coupled with atomic fluorescence spectrometry (HPLC-AFS) was successfully developed for the simultaneous determination of four mercury species including Hg 2+ , methylmercury (MeHg), ethylmercury (EtHg), and phenylmercury (PhHg) in water. Samples were enriched and cleaned up with solid phase extraction (SPE) pretreatment using thiol cartridge, some key parameters including selection of SPE cartridge, eluent type, eluent volume, and the interference factors were systematically investigated. The chromatographic separation was achieved on C 18 column using a mobile phase consisting of methanol and 60 mmol L -1 ammonium acetate with 10 mmol L -1 L-cysteine by gradient elution. Under the optimized conditions, good linearity (r ≥ 0.9991) was observed between 0.20 μg L -1 to 10.

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“…Because of the beneficial properties of hollow fiber, such as very low organic‐solvent consumption, suitable sample enrichment etc., it is useful in various matrices . The sol–gel process provides a versatile method of preconcentration techniques . In this research, a new large‐pore dendrimer‐functionalized silica material was prepared based on sol–gel technique and injected into a piece of fiber, and the process of in situ gelation was occurred in the fiber to modify it to be an applicable sorbents in CIT extraction process .…”

Section: Introductionmentioning

confidence: 99%

Dendrimer-reinforced sol-gel based hollow fiber solid-phase microextraction for citalopram determination using response surface methodology

2017

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The inclusion of a polyamidoamine dendrimer in a silica sol-gel yielded a solid nanosorbent that was used for the preconcentration, extraction, and determination of citalopram in hospital waste water, hemodialysis solution, and some drinking water. The method was developed by applying a novel nanosorbent for the solid-phase microextraction of citalopram, containing a silica sol-gel reinforced by polyamidoamine second-generation dendrimer, which was protected by a polypropylene hollow fiber. Plackett-Burman design and central composite design were utilized to evaluate the significance of several factors on the extraction efficiency. The adsorption mechanism and thermodynamic and kinetic aspects were studied. The adsorption process was exothermic and well fitted to the Bangham equation kinetic model. Under optimal conditions, the presented method was liner in the range of 0.05-100 μg/mL. The limits of detection of quantification of citalopram were 0.0095 and 0.031 μg m/L, respectively.

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Magnetic dispersive micro solid-phase extraction for trace mercury pre-concentration and determination in water, hemodialysis solution and fish samples

Cited by 34 publications

References 32 publications

Dispersive liquid–liquid microextraction combined with dispersive solid‐phase extraction for gas chromatography with mass spectrometry determination of polycyclic aromatic hydrocarbons in aqueous matrices

Dispersive liquid–liquid microextraction combined with dispersive solid‐phase extraction for gas chromatography with mass spectrometry determination of polycyclic aromatic hydrocarbons in aqueous matrices

Sensitive Mercury Speciation Analysis in Water by High-Performance Liquid Chromatography-Atomic Fluorescence Spectrometry Coupling with Solid-Phase Extraction

Dendrimer-reinforced sol-gel based hollow fiber solid-phase microextraction for citalopram determination using response surface methodology

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