Surface Polymers on Multiwalled Carbon Nanotubes for Selective Extraction and Electrochemical Determination of Rhodamine B in Food Samples.
Yassine BenmassaoudKhaled MurtadaRachid SalghiMohammed ZougaghAngel RíosPublished in: Molecules (Basel, Switzerland) (2021)
In this study, we combine magnetic solid phase extraction (MSPE), with the screen-printed carbon electrode (SPCE) modified by a molecular imprinted polymer (MIP) for sensitive and selective extraction and electrochemical determination of Rhodamine B in food samples. A magnetic solid phase extraction (MSPE) was carried out using magnetic poly(styrene-co-divinylbenzene) (PS-DVB) and magnetic nanoparticles (MNPs) synthetized on the surface of multiwalled carbon nanotubes (MWCNTs). An MIP was prepared on the surface of MWCNTs in the presence of titanium oxide nanoparticles (TiO2NPs) modifying the SPCE for the rapid electrochemical detection of Rhodamine B. The MIPs synthesis was optimized by varying the activated titanium oxide (TiO2) and multiwalled carbon nanotubes (MWCNTs) amounts. The MSPE and electrochemical detection conditions were optimized as well. The present method exhibited good selectivity, high sensitivity, and good reproducibility towards the determination of Rhodamine B, making it a suitable method for the determination of Rhodamine B in food samples.
Keyphrases
- molecularly imprinted
- carbon nanotubes
- solid phase extraction
- liquid chromatography tandem mass spectrometry
- fluorescent probe
- high performance liquid chromatography
- gas chromatography mass spectrometry
- tandem mass spectrometry
- simultaneous determination
- oxide nanoparticles
- loop mediated isothermal amplification
- liquid chromatography
- ultra high performance liquid chromatography
- gas chromatography
- magnetic nanoparticles
- label free
- mass spectrometry
- sensitive detection
- single molecule
- risk assessment
- high throughput