Fe3O4 nanoparticles as the adsorbent of magnetic solid-phase extraction for clean and preconcentration of maltol and ethyl maltol in food samples followed by HPLC analysis

2017 ◽  
Vol 40 (16) ◽  
pp. 832-838 ◽  
Author(s):  
Xiaoting Zhang ◽  
Jiahua Niu ◽  
Yixin Yang ◽  
Peige Qin ◽  
Shufang Tian ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Fe3o4 Nanoparticles ◽  
Hplc Analysis ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Food Samples ◽  
Phase Extraction ◽  
Magnetic Solid

Covalent organic framework-LZU1@PEI@Fe3O4-based magnetic dispersive micro-solid phase extraction of tetracyclines from environmental water prior to HPLC analysis

2021 ◽  
Author(s):  
Ying Zhang ◽  
Yuhan Ning ◽  
Wanliang Liao ◽  
Weiping Wang ◽  
Ai-Jun Wang
Keyword(s):  
Solid Phase Extraction ◽  
Fe3o4 Nanoparticles ◽  
Hplc Analysis ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Environmental Water ◽  
Phase Extraction ◽  
Covalent Organic Framework ◽  
Magnetic Solid ◽  
Organic Framework

In this work, COF-LZU1@PEI@Fe3O4 was synthesized by immobilization of COF-LZU1 onto the surface of polyethyleneimine-functionalized Fe3O4 nanoparticles (PEI@Fe3O4) and employed as adsorbent for magnetic solid phase extraction of tetracyclines (TCs)....

scholarly journals Magnetic Solid-Phase Extraction of Organic Compounds Based on Graphene Oxide Nanocomposites

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1148 ◽  
Author(s):  
Natalia Manousi ◽  
Erwin Rosenberg ◽  
Eleni Deliyanni ◽  
George A. Zachariadis ◽  
Victoria Samanidou
Keyword(s):  
Graphene Oxide ◽  
Solid Phase Extraction ◽  
Aqueous Solutions ◽  
Organic Compounds ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Food Samples ◽  
Phase Extraction ◽  
Trace Organic Compounds ◽  
Magnetic Solid

Graphene oxide (GO) is a chemical compound with a form similar to graphene that consists of one-atom-thick two-dimensional layers of sp2-bonded carbon. Graphene oxide exhibits high hydrophilicity and dispersibility. Thus, it is difficult to be separated from aqueous solutions. Therefore, functionalization with magnetic nanoparticles is performed in order to prepare a magnetic GO nanocomposite that combines the sufficient adsorption capacity of graphene oxide and the convenience of magnetic separation. Moreover, the magnetic material can be further functionalized with different groups to prevent aggregation and extends its potential application. Until today, a plethora of magnetic GO hybrid materials have been synthesized and successfully employed for the magnetic solid-phase extraction of organic compounds from environmental, agricultural, biological, and food samples. The developed GO nanocomposites exhibit satisfactory stability in aqueous solutions, as well as sufficient surface area. Thus, they are considered as an alternative to conventional sorbents by enriching the analytical toolbox for the analysis of trace organic compounds.

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