Optimization by response surface methodology of a dispersive magnetic solid phase extraction exploiting magnetic graphene nanocomposite coupled with UHPLC-PDA for simultaneous determination of new oral anticoagulants (NAOs) in human plasma

2020 ◽  
Vol 179 ◽  
pp. 112992 ◽  
Author(s):  
Vincenzo Ferrone ◽  
Sabrina Todaro ◽  
Maura Carlucci ◽  
Antonella Fontana ◽  
Alessia Ventrella ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Solid Phase Extraction ◽  
Simultaneous Determination ◽  
Solid Phase ◽  
Oral Anticoagulants ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Solid ◽  
Graphene Nanocomposite

scholarly journals Determination of Aflatoxin B1 and B2 in Vegetable Oils Using Fe3O4/rGO Magnetic Solid Phase Extraction Coupled with High-Performance Liquid Chromatography Fluorescence with Post-Column Photochemical Derivatization

Toxins ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 621 ◽  
Author(s):  
Li Yu ◽  
Fei Ma ◽  
Liangxiao Zhang ◽  
Peiwu Li
Keyword(s):  
High Performance Liquid Chromatography ◽  
Solid Phase Extraction ◽  
Vegetable Oils ◽  
High Performance ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Solid ◽  
Graphene Nanocomposite

In this study, magnetic graphene nanocomposite Fe3O4/rGO was synthesized by facile one-pot solvothermal method. The nanocomposite was successfully used as magnetic solid phase extraction (MSPE) adsorbents for the determination of aflatoxins in edible vegetable oils through the π–π stacking interactions. MSPE parameters including the amount of adsorbents, extraction and desorption time, washing conditions, and the type and volume of desorption solvent were optimized. Under optimal conditions, good linear relationships were achieved. Limits of detection of this method were as low as 0.02 µg/kg and 0.01 µg/kg for aflatoxin B1 and B2, respectively. Finally, the magnetic graphene nanocomposite was successfully applied to aflatoxin analysis in vegetable oils. The results indicated that the recoveries of the B-group aflatoxins ranged from 80.4% to 106.0%, whereas the relative standard deviations (RSDs) were less than 8.1%. Owing to the simplicity, rapidity and efficiency, Fe3O4/rGO magnetic solid phase extraction coupled with high-performance liquid chromatography fluorescence with post-column photochemical derivatization (Fe3O4/rGO MSPE-HPLC-PCD-FLD) is a promising analytical method for routine and accurate determination of aflatoxins in lipid matrices.

Magnetic graphene-based cyanopropyltriethoxysilane as an adsorbent for simultaneous determination of polar and non-polar organophosphorus pesticides in cow’s milk

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 24853-24864 ◽  
Author(s):  
Hamid Rashidi Nodeh ◽  
Wan Aini Wan Ibrahim ◽  
Mohd Marsin Sanagi ◽  
Hassan Y. Aboul-Enein
Keyword(s):  
Magnetic Nanoparticles ◽  
Solid Phase Extraction ◽  
Simultaneous Determination ◽  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Graphene ◽  
Magnetic Solid

A new adsorbent based on magnetic nanoparticles (Fe3O4), graphene and cyanopropyltriethoxysilane was fabricated and applied to the magnetic solid phase extraction of organophosphorus pesticides.

Simultaneous determination of 19 phenolic compounds in oilseeds using magnetic solid phase extraction and LC-MS/MS

LWT ◽  
2019 ◽  
Vol 107 ◽  
pp. 221-227 ◽  
Author(s):  
Huhu Lang ◽  
Ruinan Yang ◽  
Xinjing Dou ◽  
Dandan Wang ◽  
Liangxiao Zhang ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Solid Phase Extraction ◽  
Simultaneous Determination ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Solid
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