ZHANG Yue,LIU Liu,LI Li-jun.Preparation and Application of a Highly Sensitive Norfloxacin Molecularly Imprinted Nanoelectrochemical Sensor[J].Journal of Instrumental Analysis,2025,44(07):1385-1391.
ZHANG Yue,LIU Liu,LI Li-jun.Preparation and Application of a Highly Sensitive Norfloxacin Molecularly Imprinted Nanoelectrochemical Sensor[J].Journal of Instrumental Analysis,2025,44(07):1385-1391. DOI: 10.12452/j.fxcsxb.250430335.
Preparation and Application of a Highly Sensitive Norfloxacin Molecularly Imprinted Nanoelectrochemical Sensor
Gold nanoparticles(AuNPs) were deposited on the surface of a glassy carbon electrode(GCE) via cyclic voltammetry to fabricate a GCE-AuNPs modified electrode in this paper. With norfloxacin(NOFX) as the template molecule,pyrrole(Py) and
o
-phenylenediamine(OPD) as bi-functional monomers,NOFX molecular-imprinted membranes were prepared on the GCE-AuNPs through electropolymerization,and an electrochemical sensor for NOFX(MIP/GCE-AuNPs) was constructed. The sensor was characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD) and a series of electrochemical methods. Using Fe(CN)
6
4-
/Fe(CN)
6
3-
as an electrochemical probe,the relevant performance of the sensor was investigated. The results showed that the current value(
∆I
) of the sensor had a good linear relationship with the NOFX concentration in the range of 0.01-5.0 μmol/L and 5.0-60 μmol/L,respectively. The detection limit(LOD) was 3.3 nmol/L,and the sensor had strong selectivity. The sensor was applied to the detection of actual samples. The recoveries were 94.0%-111%,with the relative standard deviations of 2.4%-3.1%.
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