A Novel Electrochemical Sensor Based on Poly (Diallyldimethylammonium Chloride)-Dispersed Graphene Supported Palladium Nanoparticles for Simultaneous Determination of Sunset Yellow and Tartrazine in Soft Drinks

Yu, Lanlan; Zheng, Huijun; Shi, Mengxing; Jing, Shasha; Qu, Lingbo

doi:10.1007/s12161-016-0569-4

Cited by 23 publications

(8 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Next, chronocoulometric measurements were employed to study the surface of the GO/GC and GC electrodes. On the basis of the saturated adsorption capacity (SAC) of bare and modified glassy carbon electrode, Q is proportionally dependent to t 1/2 and may be described with following formula [ 45 , 46 , 47 ]: Q = [(2nFAcD 1/2 t 1/2 )/π 1/2 ] +Q ads + Q dl , where Q ads is the charge of the oxidation of the adsorbed reagent, Q dl is the double-layer charge, F is the Faraday constant, and the other symbols have meaning as described above. Using this equation, it was calculated that GO/GCE had an increased surface area of 156% in comparison to bare GCE.…”

Section: Resultsmentioning

confidence: 99%

Highly Sensitive Determination of Tenofovir in Pharmaceutical Formulations and Patients Urine—Comparative Electroanalytical Studies Using Different Sensing Methods

et al. 2022

View full text Add to dashboard Cite

This paper discusses the electrochemical behavior of antiviral drug Tenofovir (TFV) and its possible applicability towards electroanalytical determination with diverse detection strategies using square-wave voltammetry. Namely, oxidation processes were investigated using glassy carbon electrode with graphene oxide surface modification (GO/GCE), while the reduction processes, related to the studied analyte, were analyzed at a renewable silver amalgam electrode (Hg(Ag)FE). Scanning electron microscopy imaging confirmed the successful deposition of GO at the electrode surface. Catalytic properties of graphene oxide were exposed while being compared with those of bare GCE. The resultant modification of GCE with GO enhanced the electroactive surface area by 50% in comparison to the bare one. At both electrodes, i.e., GO/GCE and Hg(Ag)FE, the TFV response was used to examine and optimize the influence of square-wave excitation parameters, i.e., square wave frequency, step potential and amplitude, and supporting electrolyte composition and its pH. Broad selectivity studies were performed with miscellaneous interfering agents influence, including ascorbic acid, selected saccharides and aminoacids, metal ions, non-opioid analgesic metamizole, non-steroidal anti-inflammatory drug omeprazole, and several drugs used along with TFV treatment. The linear concentration range for TFV determination at GO/GCE and Hg(Ag)FE was found to be 0.3–30.0 µmol L–1 and 0.5–7.0 µmol L–1, respectively. The lowest LOD was calculated for GO/GCE and was equal to 48.6 nmol L–1. The developed procedure was used to detect TFV in pharmaceutical formulations and patient urine samples and has referenced utilization in HPLC studies.

show abstract

Section: Resultsmentioning

confidence: 99%

Highly Sensitive Determination of Tenofovir in Pharmaceutical Formulations and Patients Urine—Comparative Electroanalytical Studies Using Different Sensing Methods

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The linear ranges and LOD of the proposed Cu 2 O-ErGO/GCE are at least comparable to and even better than most of the previous reports. Moreover, Cu 2 O-ErGO/GCE have outstanding advantages over noble metal modified electrodes (such as Au NPs/CPE [ 7 ], Au-Pd-RGO/GCE [ 17 ], CTAB-Gr-Pt/GCE [ 44 ], GO/AgNPs-MIPs/GCE [ 45 ] and PDDA-Gr-Pd/GCE [ 47 ] in terms of the cost and electrode fabrication.…”

Section: Resultsmentioning

confidence: 99%

Novel Electrochemical Sensors Based on Cuprous Oxide-Electrochemically Reduced Graphene Oxide Nanocomposites Modified Electrode toward Sensitive Detection of Sunset Yellow

Liu

et al. 2018

Molecules

View full text Add to dashboard Cite

Control and detection of sunset yellow is an utmost demanding issue, due to the presence of potential risks for human health if excessively consumed or added. Herein, cuprous oxide-electrochemically reduced graphene nanocomposite modified glassy carbon electrode (Cu2O-ErGO/GCE) was developed for the determination of sunset yellow. The Cu2O-ErGO/GCE was fabricated by drop-casting Cu2O-GO dispersion on the GCE surface following a potentiostatic reduction of graphene oxide (GO). Scanning electron microscope and X-ray powder diffractometer was used to characterize the morphology and microstructure of the modification materials, such as Cu2O nanoparticles and Cu2O-ErGO nanocomposites. The electrochemical behavior of sunset yellow on the bare GCE, ErGO/GCE, and Cu2O-ErGO/GCE were investigated by cyclic voltammetry and second-derivative linear sweep voltammetry, respectively. The analytical parameters (including pH value, sweep rate, and accumulation parameters) were explored systematically. The results show that the anodic peak currents of Cu2O-ErGO /GCE are 25-fold higher than that of the bare GCE, due to the synergistic enhancement effect between Cu2O nanoparticles and ErGO sheets. Under the optimum detection conditions, the anodic peak currents are well linear to the concentrations of sunset yellow, ranging from 2.0 × 10−8 mol/L to 2.0 × 10−5 mol/L and from 2.0 × 10−5 mol/L to 1.0 × 10−4 mol/L with a low limit of detection (S/N = 3, 6.0 × 10−9 mol/L). Moreover, Cu2O-ErGO/GCE was successfully used for the determination of sunset yellow in beverages and food with good recovery. This proposed Cu2O-ErGO/GCE has an attractive prospect applications on the determination of sunset yellow in diverse real samples.

show abstract

“…Wang et al [ 12 ] reported values of 30 mV for AM using a carbon nanotube and polypyrrole composite-modified electrode. Meanwhile, Gan et al [ 26 ] reported values of 55 mV for TZ using graphene decorated with nickel nanoparticles, and Yu et al [ 17 ] reported values of 56 mV for TZ using an electrochemical sensor constructed with poly diallyldimethylammonium chloride-dispersed graphene and palladium nanoparticle composite. Both slopes of the above equations are close to the theoretical value of 59 mV/pH, suggesting an electrochemical process involving equal numbers of protons and electrons.…”

Section: Resultsmentioning

confidence: 99%

“…Zhao et al [ 9 ] reported that the oxidation peak current of AM increases linearly over the 20–400 mV s −1 range, while it also deviates from linearity from 400 to 1000 mV s −1 , indicating the adsorption process changing to a diffusion process using a carbon nanotube and polypyrrole composite-modified electrode. Yu et al [ 17 ] also assigned a mixed adsorption-diffusion driven oxidation process of AM using a Pd-doped polyelectrolyte functionalized graphene-modified electrode. On the other hand, Gan et al [ 19 ] reported that the oxidation peak current of TZ increased linearly with the square root of the scan rate in the 100–400 mV s −1 range, indicating diffusion-controlled electrode processes, and the oxidation peak potential positively shifted with the scan rate using a graphene and mesoporous TiO 2 -modified carbon paste electrode.…”

Section: Resultsmentioning

confidence: 99%

Adsorptive Stripping Voltammetric Determination of Amaranth and Tartrazine in Drinks and Gelatins Using a Screen-Printed Carbon Electrode

Perdomo

Arancibia

García‐Beltrán

et al. 2017

Sensors

View full text Add to dashboard Cite

A fast, sensitive, and selective method for the simultaneous determination of one pair of synthetic colorants commonly found mixed in food products, Amaranth (AM) and Tartrazine (TZ), based on their adsorption and oxidation on a screen-printed electrode (SPE) is presented. The variation of peak current with pH, supporting electrolyte, adsorption time, and adsorption potential were optimized using square wave adsorptive voltammetry. The optimal conditions were found to be: pH 3.2 (PBS), Eads 0.00 V, and tads 30 s. Under these conditions, the AM and TZ signals were observed at 0.56 and 0.74 V, respectively. A linear response were found over the 0.15 to 1.20 µmol L−1 and 0.15 to 0.80 µmol L−1 concentrations, with detection limits (3σ/slope) of 26 and 70 nmol L−1 for AM and TZ, respectively. Reproducibility for 17.7 µmol L–1 AM and TZ solutions were 2.5 and 3.0% (n = 7), respectively, using three different electrodes. The method was validated by determining AM and TZ in spiked tap water and unflavored gelatin spiked with AM and TZ. Because a beverage containing both AM and TZ was not found, the method was applied to the determination of AM in a kola soft drink and TZ in an orange jelly and a soft drink powder.

show abstract

A Novel Electrochemical Sensor Based on Poly (Diallyldimethylammonium Chloride)-Dispersed Graphene Supported Palladium Nanoparticles for Simultaneous Determination of Sunset Yellow and Tartrazine in Soft Drinks

Cited by 23 publications

References 38 publications

Highly Sensitive Determination of Tenofovir in Pharmaceutical Formulations and Patients Urine—Comparative Electroanalytical Studies Using Different Sensing Methods

Highly Sensitive Determination of Tenofovir in Pharmaceutical Formulations and Patients Urine—Comparative Electroanalytical Studies Using Different Sensing Methods

Novel Electrochemical Sensors Based on Cuprous Oxide-Electrochemically Reduced Graphene Oxide Nanocomposites Modified Electrode toward Sensitive Detection of Sunset Yellow

Adsorptive Stripping Voltammetric Determination of Amaranth and Tartrazine in Drinks and Gelatins Using a Screen-Printed Carbon Electrode

Contact Info

Product

Resources

About