Magnetically mixed hemimicelles solid-phase extraction based on ionic liquid-coated Fe3O4 nanoparticles for the analysis of trace organic contaminants in water

2014 ◽  
Vol 6 (17) ◽  
pp. 6783-6788 ◽  
Author(s):  
Sheying Dong ◽  
Guiqi Huang ◽  
Xiaohong Wang ◽  
Qing Hu ◽  
Tinglin Huang
Keyword(s):  
Ionic Liquid ◽  
Magnetic Nanoparticles ◽  
Solid Phase Extraction ◽  
Fe3o4 Nanoparticles ◽  
Organic Contaminants ◽  
Solid Phase ◽  
Phase Extraction ◽  
Trace Organic Contaminants ◽  
Mixed Hemimicelles ◽  
Trace Organic

Magnetically mixed hemimicelles formed by ionic liquid-coated Fe3O4 magnetic nanoparticles (IL-coated Fe3O4 NPs) as an adsorbent of solid-phase extraction are proposed for the preconcentration of five organic contaminants.

scholarly journals Using size-exclusion for improved extraction of trace organic compounds from landfill leachate

2019 ◽  
Vol 37 (6) ◽  
pp. 651-655 ◽  
Author(s):  
Nicole L Kennedy Neth ◽  
Olya S Keen
Keyword(s):  
Solid Phase Extraction ◽  
Small Molecules ◽  
Landfill Leachate ◽  
Organic Contaminants ◽  
Solid Phase ◽  
Size Exclusion ◽  
Phase Extraction ◽  
Trace Organic Contaminants ◽  
Hydrophilic Lipophilic Balance ◽  
Trace Organic

Pharmaceuticals, plasticisers and other trace organic contaminants have been reported in landfill leachates, with most methods using hydrophilic–lipophilic balance cartridges for solid phase extraction. However, leachate has a high organic load and can quickly coat the cartridge media and prevent target compounds from being extracted. There are several solid phase extraction cartridges that offer size exclusion in addition to adsorption, where only small molecules are allowed to diffuse into the resin pores where adsorption in happening. Three cartridges with size exclusion properties were evaluated in comparison with hydrophilic–lipophilic balance cartridges for extraction of several trace organic contaminants spiked into landfill leachate. All three cartridges with size exclusion properties showed some improvement in extraction compared with hydrophilic–lipophilic balance, although the differences were not statistically significant at 95% confidence interval. Nevertheless, media with size-exclusion properties offers a viable alternative to hydrophilic–lipophilic balance for extracting small molecules of trace organics from complex environmental matrices.

Magnetic solid-phase extraction of proteins based on hydroxy functional ionic liquid-modified magnetic nanoparticles

2014 ◽  
Vol 6 (20) ◽  
pp. 8358-8367 ◽  
Author(s):  
Jing Chen ◽  
Yuzhi Wang ◽  
Xueqin Ding ◽  
Yanhua Huang ◽  
Kaijia Xu
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Magnetic Nanoparticles ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Solid ◽  
Extraction Performance ◽  
Modified Magnetic Nanoparticles

Hydroxy functional ionic liquids have been first designed and modified on the surface of silica-coated magnetic Fe3O4 nanoparticles (MNPs) for the investigation of the extraction performance of proteins.

scholarly journals Application of Magnetic Nanoparticles Coated with Crosslinked Zwitterionic Poly(ionic liquid)s for the Extraction of Oligonucleotides

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3146
Author(s):  
Łukasz Nuckowski ◽  
Krzysztof Dzieszkowski ◽  
Zbigniew Rafiński ◽  
Sylwia Studzińska
Keyword(s):  
Ionic Liquid ◽  
Magnetic Nanoparticles ◽  
Solid Phase Extraction ◽  
Ammonium Acetate ◽  
Solid Phase ◽  
Extraction Procedure ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Poly Ionic Liquid ◽  
The Impact

Magnetic nanoparticles coated with zwitterionic poly(ionic liquid)s were applied for dispersive solid-phase extraction of oligonucleotides. The materials were synthesized by miniemulsion copolymerization of ionic liquids and divinylbenzene on magnetic nanoparticles. The functional monomers contain a positively charged imidazolium ring and one of the anionic groups: derivatives of acetate, malonate, or butyl sulfonate ions. Adsorption of unmodified DNA oligonucleotide on obtained materials was possible in ion-exchange (IE) and hydrophilic interactions (HI) mode. The adsorption in IE was possible at low pH and was almost complete. The adsorption in HI mode required the usage of appropriate addition of organic solvent but did not provide full adsorption. Studies on the desorption of the analytes included determining the impact of ammonium acetate concentration and pH and organic solvents addition on the recovery. The material containing acetic fragments as an anionic group was selected for the final procedure with the use of 10 mM ammonium acetate (pH = 9.5)/methanol (50/50, v/v) as an elution solution. The magnetic dispersive solid-phase extraction procedure was tested for the oligonucleotides with various modifications and lengths. Moreover, it was applied to extract DNA oligonucleotide and its synthetic metabolites from enriched human plasma without any pre-purification, with recoveries greater than 80%.

Magnetic solid phase extraction of glyphosate and aminomethylphosphonic acid in river water using Ti4+-immobilized Fe3O4 nanoparticles by capillary electrophoresis

2015 ◽  
Vol 7 (14) ◽  
pp. 5862-5868 ◽  
Author(s):  
Ya-lei Dong ◽  
Dong-qiang Guo ◽  
Hong Cui ◽  
Xiang-jun Li ◽  
Yu-jian He
Keyword(s):  
Capillary Electrophoresis ◽  
Magnetic Nanoparticles ◽  
Solid Phase Extraction ◽  
Fe3o4 Nanoparticles ◽  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Aminomethylphosphonic Acid ◽  
Magnetic Solid

Magnetic nanoparticles immobilized with Ti4+ are employed to develop an mSPE-CE method for extracting organophosphorus pesticides based on affinity extraction.

Sign in / Sign up

Export Citation Format

Share Document