Electrocatalytic response of poly(cobalt tetraaminophthalocyanine)/multi-walled carbon nanotubes-Nafion modified electrode toward sulfadiazine in urine

Hong, Xiaoping; Zhu, Yan; Zhang, Yanzhen

doi:10.1631/jzus.b1100337

Cited by 13 publications

(5 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Before use, the GCE was cleaned according to the procedure presented in [ 52 ]. The modification process consisted of the electropolymerization of 0.1 M pyrrole monomer in the presence of sulfadiazine in a 0.1 M H 2 SO 4 solution, using cyclic voltammetry at a scan rate of 100 mV/s, in the potential range from −0.2 to +1.4 V for 10 cycles.…”

Section: Methodsmentioning

confidence: 99%

An Electrochemical Sensor for Sulfadiazine Determination Based on a Copper Nanoparticles/Molecularly Imprinted Overoxidized Polypyrrole Composite

Elamin

Ali

Essousi

et al. 2023

Sensors

View full text Add to dashboard Cite

To protect consumers from risks related to overexposure to sulfadiazine, total residues of this antibacterial agent in animal-origin foodstuffs not exceed international regulations. To this end, a new electrochemical sensor based on a molecularly imprinted polymer nanocomposite using overoxidized polypyrrole and copper nanoparticles for the detection of sulfadiazine is elaborated. After optimization of the preparation of the electrochemical sensors, their differential pulse voltammetric signal exhibits an excellent stability and reproducibility at 1.05 V, with a large linear range between 10−9 and 10−5 mol L−1 and a low detection limit of 3.1 × 10−10 mol L−1. The produced sulfadiazine sensor was successfully tested in real milk samples. The combination of the properties of the electrical conduction of copper nanoparticles with the properties of the preconcentration of the molecularly imprinted overoxidized polypyrrole allows for the highly sensitive detection of sulfadiazine, even in real milk samples. This strategy is new and leads to the lowest detection limit yet achieved, compared to those of the previously published sulfadiazine electrochemical sensors.

show abstract

Section: Methodsmentioning

confidence: 99%

An Electrochemical Sensor for Sulfadiazine Determination Based on a Copper Nanoparticles/Molecularly Imprinted Overoxidized Polypyrrole Composite

Elamin

Ali

Essousi

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…It could be seen that there was no obvious anodic peak when the working solution had no SA based on the bare GCE (Figure 5a, curve i), which was due to the typical electrochemical response of SA corresponding to the oxidation of a phenylamino group. 40 An oxidation peak current appeared at around 0.988 V when SA was added in (Figure 5a, curve ii). When the H 2 O/MWCNTs/GCE and DMF/MWCNTs/GCE were used as the working electrode, the oxidation peak of SA improved greatly with the anodic potential shifting negatively to about 0.979 V (Figure 5a, curve iii) and 0.965 V (Figure 5a, curve iv), respectively.…”

Section: Eis Characterization Of Electrodesmentioning

confidence: 99%

Voltammetric Determination of Sulfonamides with a Modified Glassy Carbon Electrode Using Carboxyl Multiwalled Carbon Nanotubes

Chen

2016

Journal of the Brazilian Chemical Society

View full text Add to dashboard Cite

New glassy carbon electrode (GCE) modified with carboxyl multiwalled carbon nanotubes (MWCNTs) and treated with ultrasonic dispersing in N,N-dimethylfomamide (DMF) media, namely DMF/carboxyl/MWCNTs/GCE, was prepared for electrochemical determination of sulfonamides (SAs). Electrochemical behavior of SAs based on DMF/carboxyl/MWCNTs/GCE was investigated by cyclic voltammetry and impedance spectroscopy. The effects of various experimental parameters on the response of electrode such as pH of buffer, scan rate and the amount of modification were optimized. Under the optimal conditions, the obtained sensor presented linear response to SAs in the range of 5.0 × 10 −7 to 1.1 × 10 −4 mol L −1 of sulfonamide (R = 0.999), sulfamethazine (R = 0.990), sulfadiazine (R = 0.997), sulfamethoxazole (R = 0.996) and the limits of detection of 1. 65 × 10 −8 , 3.19 × 10 −8 , 6.76 × 10 −8 and 9.41 × 10 −8 mol L −1 , respectively. The recoveries were in the range of ca. 85-103% with relative standard deviation (RSD) < 5%. The sensor was tested by cyclic voltammetry with repeatability and stability of more than 90% of its original activity. The proposed method might offer feasibility and applicability of the sensor for further complex sulfonamides compounds.Keywords: voltammetric determination, carboxyl, multiwalled carbon nanotubes, sulfamethazine, sulfamethoxazole Introduction Sulfonamides (SAs) have a broad spectrum of antibacterial activity and play an important role as effective chemotherapeutics in bacterial. The structures of SAs consist of benzene ring with amine group (NH 2 ) at a C4 position and sulfonic acid with different alkyl groups (Figure 1). They are widely used in animal husbandry with the purpose to prevent the growth of bacteria, to treat the infections from certain protozoa and microorganisms 1,2 and to increase their production.3 As an additive of preventing bacterial in animal feed, 4 SAs, however, would bring potential consequences with unauthorized use.3 The drug residues in foods, such as milk and meat, may cause allergic reactions, antibiotic resistance and even cancer. Many countries including China have established maximum residue limits (MRLs) for SAs at the total level of 100 μg kg −1 in animal meat. 5Consequently, it is of grave importance to develop a rapid, sensitive, and accurate method for monitoring the level of SAs residues in animal meat.Currently, various methods, such as liquid chromatography, 6-12 capillary electrophoresis, 13-16 gas chromatography (GC), 17-19 micellar electrokinetic capillary chromatography, [19][20][21][22] and liquid mass chromatography, 23,24 have been proposed for analyzing SAs residue in food. These techniques have been proved to be suitable and sensitive for SAs detection. Nonetheless, some of these methods are expensive, time-consuming and tedious, and in some cases the limits of detection is not acceptable. Recently, a research on high-performance liquid chromatography (HPLC), which was coupled with photodiode array detector and mass spectrometry, studied for the...

show abstract

“…Sulfadiazine, another sulfur-containing compound belonging to a class of sulfonamides is an anti-infective prescribed for the treatment of burns against bacterial and yeast infections [113]. Sulfadiazine was studied by Hong et al as they developed a novel CoPc composite for the electrochemical detection of sulfadiazine [114], [115]. The combination of a tetrasubstituted CoPc with carbon nanotubes (CNTs) and Nafion on a GCE via electropolymerization was described.…”

Section: Organic Pollutantsmentioning

confidence: 99%

Recent advances in phthalocyanines for chemical sensor, non-linear optics (NLO) and energy storage applications

Gounden

Nombona

Zyl

2020

Coordination Chemistry Reviews

155

View full text Add to dashboard Cite

Electrocatalytic response of poly(cobalt tetraaminophthalocyanine)/multi-walled carbon nanotubes-Nafion modified electrode toward sulfadiazine in urine

Cited by 13 publications

References 38 publications

An Electrochemical Sensor for Sulfadiazine Determination Based on a Copper Nanoparticles/Molecularly Imprinted Overoxidized Polypyrrole Composite

An Electrochemical Sensor for Sulfadiazine Determination Based on a Copper Nanoparticles/Molecularly Imprinted Overoxidized Polypyrrole Composite

Voltammetric Determination of Sulfonamides with a Modified Glassy Carbon Electrode Using Carboxyl Multiwalled Carbon Nanotubes

Recent advances in phthalocyanines for chemical sensor, non-linear optics (NLO) and energy storage applications

Contact Info

Product

Resources

About