Aptamer-enhanced fluorescence determination of bisphenol A after magnetic solid-phase extraction using Fe3O4@SiO2@aptamer

2020 ◽  
Vol 12 (36) ◽  
pp. 4479-4486
Author(s):  
Zhou Xu ◽  
Yanqiu Chen ◽  
Yao Tang ◽  
Maolong Chen ◽  
Wei Chen ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Enhanced Fluorescence ◽  
Fluorescence Determination ◽  
Magnetic Solid

The detection of bisphenol A based on the Fe3O4@SiO2@Aptamer nanoparticles.

scholarly journals Rapid Magnetic Solid-Phase Extraction Based on Graphene Oxide/Magnetite Nanoparticles for the Determination of Non-Steroidal Anti-Inflammatory Drugs and Bisphenol-A in Tap Water

2019 ◽  
Vol 31 (6) ◽  
pp. 1294-1300 ◽  
Author(s):  
U.A.A. UNGKU ABDULLAH ◽  
N.S. MOHAMAD HANAPI ◽  
W.N.W. IBRAHIM ◽  
S. SAIFUL AZHAR ◽  
N.S. ISHAK ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Bisphenol A ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Tap Water ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Solid ◽  
Inflammatory Drugs

A simple and rapid magnetic solid-phase extraction based on reduced graphene oxide/ferroferic oxide (rGO/Fe3O4) coupled with high performance liquid chromatography-diode array detector (HPLC-DAD), was proposed for the determination of naproxen and diclofenac sodium of non-steroidal anti-inflammatory drugs (NSAIDs) and bisphenol-A residue in tap water sample. Fe3O4 was assembled with graphene oxide by facile method. Several important parameters, such as extraction time, desorption time and desorption solvent were studied and optimized. Optimal conditions were then used for the extraction of NSAIDs and bisphenol-A from real samples, prior to HPLC-DAD analysis using C18 column. The proposed method provides good linearity in the range of 1.0-5.0 mg L-1 (R2 naproxene = 0.9983, R2 diclofenac = 0.9960) for NSAIDs and R2 = 0.9919 for bisphenol-A; limit of detection of 0.031 mg L-1 and 0.023 mg L-1 for naproxen and diclofenac, respectively and 0.1785 mg L-1 for bisphenol-A; limit of quantification for naproxen and diclofenac were 0.102 and 0.076 mg L-1, respectively and 0.5949 mg L-1 for bisphenol-A; relative recoveries between 66.21 and 105.60 % for diclofenac and naproxen, respectively and 72.74 % for bisphenol-A; and acceptable reproducibility relative standard deviation (RSD, n = 3) of 6.79 and 11.32 % for diclofenac and naproxen, respectively and 0.93 % for bisphenol-A. The method was successfully applied to tap water sample and the results indicates that small residue of bisphenol-A is present the sample while no traces of NSAIDs was detected.

Ultrasound-assisted magnetic solid-phase extraction for the determination of some transition metals in Orujo spirit samples by capillary electrophoresis

2016 ◽  
Vol 190 ◽  
pp. 263-269 ◽  
Author(s):  
Rosa M. Peña Crecente ◽  
Carlha Gutiérrez Lovera ◽  
Julia Barciela García ◽  
Carlos Herrero Latorre ◽  
Sagrario García Martín
Keyword(s):  
Capillary Electrophoresis ◽  
Transition Metals ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Solid ◽  
Ultrasound Assisted
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