Grafting of glutathione to magnetic graphene oxide and application for the determination of As(iii)/(v) in food samplesviaa zeta potential analyzer

2018 ◽  
Vol 42 (7) ◽  
pp. 5345-5355 ◽  
Author(s):  
Şerife Saçmacı ◽  
Mustafa Saçmacı ◽  
Cansu Kök
Keyword(s):  
Graphene Oxide ◽  
Zeta Potential ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Food Samples ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Magnetic Graphene Oxide ◽  
Selective Method

A new selective method based on magnetic dispersive solid-phase extraction (MDSPE) and a zetasizer system is proposed for the determination of As(iii)/As(v) species in some water and food samples.

Highly selective preconcentration of ultra-trace amounts of lead ions in real water and food samples by dispersive solid phase extraction using modified magnetic graphene oxide as a novel sorbent

2018 ◽  
Vol 10 (18) ◽  
pp. 2081-2087 ◽  
Author(s):  
S. Akbarzade ◽  
M. Chamsaz ◽  
G. H. Rounaghi
Keyword(s):  
Graphene Oxide ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Absorption Spectrometry ◽  
Food Samples ◽  
Lead Ion ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Magnetic Graphene Oxide ◽  
Ultra Trace

A simple dispersive solid-phase extraction method coupled with atomic absorption spectrometry detection was developed for selective separation of ultra-trace of lead ion using graphene oxide modified such as the pseudo imprinted polymer sorbent in real samples.

scholarly journals Trace determination of chlorpheniramine in human plasma using magnetic dispersive solid-phase extraction based on a graphene oxide/Fe3O4@polythionine nanocomposite combined with high-performance liquid chromatography

RSC Advances ◽  
2017 ◽  
Vol 7 (84) ◽  
pp. 53210-53218 ◽  
Author(s):  
Maryam Ahmadi Daryakenary ◽  
Mohsen Zeeb
Keyword(s):  
High Performance Liquid Chromatography ◽  
Graphene Oxide ◽  
Liquid Chromatography ◽  
Solid Phase Extraction ◽  
Human Plasma ◽  
High Performance ◽  
Solid Phase ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction

Graphene oxide/Fe3O4@polythionine (GO/Fe3O4@PTh) nanocomposite was fabricated for magnetic dispersive solid-phase extraction and high-performance liquid chromatography-ultraviolent detection (HPLC) of chlorpheniramine in human plasma.

scholarly journals Multi-Element Determination of Toxic and Nutrient Elements by ICP-AES after Dispersive Solid-Phase Extraction with Modified Graphene Oxide

2020 ◽  
Vol 10 (23) ◽  
pp. 8722
Author(s):  
Natalia Manousi ◽  
Eleni Deliyanni ◽  
George Zachariadis
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Emission Spectrometry ◽  
Local Market ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Modified Graphene Oxide

A novel graphene-oxide-derived material was synthesized after modification of graphene oxide with sodium hydroxide and used for the dispersive solid-phase extraction (d-SPE) of different elements (Pb, Cd, Ba, Zn, Cu and Ni) prior to their determination by inductively coupled plasma atomic emission spectrometry (ICP-AES). The prepared nanomaterial was characterized by X-ray diffraction (XRD), nitrogen adsorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared (FTIR) spectroscopy. Full factorial design and Derringer’s type desirability function were used for the optimization of the d-SPE procedure. Pareto charts illustrated the effects of each of the examined factors and their interactions on the determination of the elements. Under the optimum conditions, detection limits (LODs) for the elements ranged between 0.01 and 0.21 μg g−1, intra-day repeatability (n = 5) was lower than 1.9% and inter-day repeatability (n = 5 × 3) was lower than 4.7%. Relative recovery values ranged between 88.1 and 117.8%. The method was validated and successfully applied for the determination of trace elements in poultry, pork and beef samples from the local market. The proposed method is simple, rapid, sensitive and the novel sorbent can be used at least ten times.

A colorimetric-dispersive solid-phase extraction method for the sensitive and selective determination of iron using dissolvable bathocuproinedisulfonic acid-intercalated layered double hydroxide nanosheets

2018 ◽  
Vol 42 (7) ◽  
pp. 5489-5498 ◽  
Author(s):  
Yahya Hamid ◽  
Mohammad Reza Fat’hi
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Disulfonic Acid ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Selective Method ◽  
Selective Determination ◽  
Double Hydroxide ◽  
Double Hydroxides

In this research, a novel, simple, sensitive and selective method has been presented for the determination of iron using dissolvable bathocuproine disulfonic acid (BCS)-layered double hydroxides (LDHs) for dispersive solid-phase extraction (DSPE).

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