Rapid and sensitive electrochemical determination of tartrazine in commercial food samples using IL/AuTiO2/GO composite modified carbon paste electrode

Georgescu, Ramona; Staden, Jacobus Frederick van; State, Razvan; Papa, Florica

doi:10.1016/j.foodchem.2022.132616

Cited by 34 publications

(37 citation statements)

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“…Calculating the electroactive surface area permitted the study of the electrocatalytic activity of the sensors, which was performed by applying the Randles–Sevick equation [ 20 , 21 ] to quasi-reversible redox processes controlled by diffusion. As demonstrated below, the peak current intensity on both the anodic and cathodic peaks is directly proportional to the square root of the scan rate:

where Ip is the peak current (µA), n is the number of transferred electrons ( n = 1, in this example), A is the electrode active surface area (cm 2 ), C 0 is the concentration of K 3 [Fe(CN) 6 ] (mol cm −3 ), D R is the diffusion coefficient (7.60 × 10 −6 cm 2 s −1 ), and υ is the scan rate (V s −1 ).…”

Section: Resultsmentioning

confidence: 99%

Gold Nanoparticles/Nanographene-Based 3D Sensors Integrated in Mini-Platforms for Thiamine Detection

Gheorghe

Staden

et al. 2022

Sensors

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Vitamins are essential for sustaining daily activities and perform crucial roles in metabolism, such as preventing vascular events and delaying the development of diabetic nephropathy. The ultrasensitive assessment of thiamine in foods is required for food quality evaluation. A mini-platform utilizing two 3D sensors based on nanographene and gold nanoparticles paste modified with protoporphyrin IX and protoporphyrin IX cobalt chloride is proposed for the detection of thiamine in blueberry syrup, multivitamin tablets, water, and a biological sample (urine). Differential pulse voltammetry was utilized for the characterization and validation of the suggested sensors. The sensor modified with protoporphyrin IX has a detection limit of 3.0 × 10−13 mol L−1 and a quantification limit of 1.0 × 10−12 mol L−1, whereas the sensor modified with protoporphyrin IX cobalt chloride has detection and quantification limits of 3.0 × 10−12 and 1.0 × 10−11 mol L−1, respectively. High recoveries (values greater than 95.00%) and low RSD (%) values (less than 5.00%) are recorded for both 3D sensors when used for the determination of thiamine in blueberry syrup, multivitamin tablets, water, and urine, demonstrating the 3D sensors’ and suggested method’s high reliability.

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Section: Resultsmentioning

confidence: 99%

Gold Nanoparticles/Nanographene-Based 3D Sensors Integrated in Mini-Platforms for Thiamine Detection

Gheorghe

Staden

et al. 2022

Sensors

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“…Dodavanjem empirijski određene optimalne količine modifika-tora, odzivne karakteristike CMCPE u većini se slučajeva poboljšavaju (slika 2a). 47 Neki od najčešće upotrebljavanih ionskih aditiva u posljednjih desetak godina jesu: tetrabutilamonijev tetrafenilborat, 4 natrijev tetrafenilborat, 4,12,13,16,17,46 kalijev tetrafenilborat, 12,13 kalijev tetrakis(4-klorfenil)borat 4 i dr. 4,13,22,48 Isto tako, u posljednje vrijeme sve je uočljivija primjena različitih ugljikovih nanomaterijala (slika 3) u razvoju CPE kod mnogih elektronalitičkih tehnika 49,50,[51][52][53][54][55][56][57][58]59 pa time i onih potenciometrijskih. 5,10,[22][23][24]26,27,60,61 U odnosu na ostale materijale koji se upotrebljavaju za izradu elektroda, CPE imaju nekoliko prednosti.…”

Section: Uvodunclassified

“…Zanimljivim se pokazalo i istraživanje u kojem je za određivanje losartana, lijeka za liječenje arterijskih hipertenzija, upotrijebljena CMCPE s ionskom kapljevinom kao vezivom. 24 Konvencionalna veziva zamijenjena su ionskim kapljevinama među ostalim i u senzoru za određivanje petidina, sintetskog narkoanalgetika sličnog morfinu 56 odnosno u senzoru za određivanje umjetnog bojila tartrazina, 58 oba primijenjena u voltametriji.…”

Section: Literaturni Pregled Upotrebe Modificiranih Cpe U Potenciomet...unclassified

Renesansa elektroda s ugljikovom pastom; njihove modifikacije i primjene u potenciometrijskim određivanjima farmaceutika

Radić

Bralić²,

Kolar³

2023

Kemija U Industriji

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The development of carbon paste electrodes in the 1970s generated considerable interest in the scientific community, because they offered several advantages over conventional membrane electrodes. At the beginning of the new millennium, the use of carbon nanomaterials as a new trend in their development gave additional impetus. After CPEs were successfully developed for potentiometric determination of more than 70 chemical elements, these electrodes gained additional interest for pharmaceutical and medical applications. This paper reviews the scientific literature of the last decade related to the development of CPEs for the quantitative determination of active pharmaceutical ingredients and their application in real samples.

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“…These encompass high electrical conductivity, a broad electrochemical potential window, chemical affinity, electrochemical stability, low toxicity, thermal stability, antifouling properties, and catalytic activity. [66,67] Moreover, multiple investigations have underscored their potential to enhance selectivity. [67] For example, Nejad et al, incorporated 1-butyl-3-methylimidazolium hexafluorophosphate on CPE for the simultaneous detection of carmoisine (CR) and TZ food azo dyes, with a LOD 0.02 μmol L À 1 (Table 4).…”

Section: Ionic Liquidmentioning

confidence: 99%

Modified Electrochemical Sensors for the Detection of Selected Food Azo Dyes: A Review

Cardenas‐Riojas,

Calderon‐Zavaleta,

Quiroz‐Aguinaga

et al. 2023

ChemElectroChem

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There are plenty of evidence that consuming high levels of azo dyes, such as Tartrazine, Sunset Yellow, Allura Red, Ponceau 4R, Amaranth, Sudan, and Azorubine, is associated with serious health problems. Therefore, electrochemical sensors have been developed for their effective detection, also offering low cost, portability, and the fact that they do not require harmful solvents. They are customarily employed in several electrochemical techniques, including cyclic voltammetry, differential pulse voltammetry, and square wave voltammetry. The most commonly employed materials in the manufacturing of electrochemical sensors are carbonaceous materials given their high stability, surface area, and conductivity. Employing these carbonaceous materials results in an enhanced sensitivity of electrochemical sensors when detecting azo dyes. To further improve the sensors, these materials are modified with metal oxides, polymers, polysaccharide, ionic liquids, and metal nanoparticles, allowing the detection of ultra‐sensitive traces of azo dyes. Therefore, this review provides an overview of the characteristics of modified carbonaceous materials and their applications for the detection of food azo dyes, along with a summary of the currently employed electroanalytical detection methods. Additionally, this review discusses the development of novel nanomaterials and their technological advances, while exploring their potential environmental and health impacts within the food industry.

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Rapid and sensitive electrochemical determination of tartrazine in commercial food samples using IL/AuTiO2/GO composite modified carbon paste electrode

Cited by 34 publications

References 34 publications

Gold Nanoparticles/Nanographene-Based 3D Sensors Integrated in Mini-Platforms for Thiamine Detection

Gold Nanoparticles/Nanographene-Based 3D Sensors Integrated in Mini-Platforms for Thiamine Detection

Renesansa elektroda s ugljikovom pastom; njihove modifikacije i primjene u potenciometrijskim određivanjima farmaceutika

Modified Electrochemical Sensors for the Detection of Selected Food Azo Dyes: A Review

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