Levels of copper in sweeteners, sugar, tea, coffee and mate infusions. Determination by adsorptive stripping voltammetry in the presence of α-lipoic acid

Hevia, Karen; Arancibia, Veróníca; Rojas−Romo, Carlos

doi:10.1016/j.microc.2014.10.004

Cited by 19 publications

(7 citation statements)

References 35 publications

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“…As an electrochemical technique, stripping voltammetry has been accepted to be one of the most sensitive and convenient tools for the determination of trace metals [3]. Anodic stripping voltammetry (ASV) and adsorptive stripping voltammetry (AdSV) have been previously used for the determination of copper [4,5].…”

Section: Page 3 Of 28mentioning

confidence: 99%

Optimization of stripping voltammetric sensor by mixture design-artificial neural network-genetic algorithm for determination of trace copper(II) based on iodoquinol-carbon nanotube modified carbon paste electrode

Nezhadali

Sadeghzadeh

2016

Sensors and Actuators B: Chemical

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Section: Page 3 Of 28mentioning

confidence: 99%

Optimization of stripping voltammetric sensor by mixture design-artificial neural network-genetic algorithm for determination of trace copper(II) based on iodoquinol-carbon nanotube modified carbon paste electrode

Nezhadali

Sadeghzadeh

2016

Sensors and Actuators B: Chemical

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“…[ 11,12 ] Considering the toxic effects of copper on human and environmental health, it is very important to determine it in a variety of samples. A number of analytical methods such as high‐performance liquid chromatography, [ 13 ] inductively coupled plasma optical emission spectroscopy, [ 14 ] atomic absorption spectrometry, [ 15 ] anodic stripping voltammetry [ 16 ] and spectrophotometric method [ 17 ] are used for the determination of Cu(II) ion concentration levels. These analytical methods are not very preferable for routine analysis due to their requirement of sample pretreatment and trained personnel, high cost, high energy, and time consumption.…”

Section: Introductionmentioning

confidence: 99%

Potentiometric determination of copper(II) ions based on a porphyrin derivative

Özbek

Işıldak

2022

J Chinese Chemical Soc

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A novel poly(vinyl chloride; PVC) membrane‐based Cu(II)–selective sensor has been developed using synthesized 5,10,15,20‐tetrakis(4‐methoxycarbonylphenyl)porphyrin as an ionophore. The Cu(II)–selective sensor exhibits a Nernstian response for Cu(II) ion over a wide concentration range of 1.0 × 10−5 to 1.0 × 10−1 mol L−1 with the slope of 27.0 ± 2.5 mV/decade, and a lower limit of detection of 1.88 × 10−6 mol L−1. The novel sensor shows good repeatability and high selectivity for Cu(II) ions over other mono‐, bi‐ and trivalent cations. The sensor potential response remains unaffected by pH in the range of 4.4–10.6 and exhibits a fast response time of less than 10s. Finally the developed Cu(II)–selective sensor has been successfully used as an indicator electrode in the potentiometric titration of Cu2+ against ethylenediaminetetraacetic acid and also in the determination of Cu(II) ion concentration in different water and beverage samples.

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“…Heavy metals such as lead, zinc, cadmium and copper are important for living organisms and environmental health because of their residual effects, and they show significant toxic effects [39,40]. Cu is a necessary ingredient in the metabolism of carbohydrates and lipids in both mammals and plants [41]. It provides micronutrients needed in a wide range of physiological processes.…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Determination of Copper by Biosorption‐based Mesorhizobium Opportonistum Modified Microbial Biosensor

Alasağ

Alpat

2022

Electroanalysis

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In this study, Cu (II) was determined with a carbon paste electrode modified with Mesorhizobium opportonistum bacteria species used for the first time in the production of a microbial biosensor (MOMB). Cu (II) ions were first accumulated on an electrode surface via open circuit, then electrochemical determination was conducted with cyclic and differential pulse cathodic stripping voltammetry techniques. Experimental conditions such as pH, scan rate etc. were optimized. The MOMB exhibited linearity in the range of 5.0 × 10 À 8 M to 2.0 × 10 À 6 M for Cu (II) (correlation coefficients: 0.9914) with detection limit (LOD) of 2.0 × 10 À 8 M, a limit of quantification (LOQ) 6.64 × 10 À 8 M and a detection sensitivity (10.34 μA/μM), for Cu (II). The electrode-to electrode reproducibility of the MOMB was found to be 2.41 % (n = 6) coefficient of variation. The MOMB has advantages for Cu (II) determination, including good sensitivity and reproducibility, easy preparation, low cost, applicability to sample and not having a need for additional chemical processes.

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Levels of copper in sweeteners, sugar, tea, coffee and mate infusions. Determination by adsorptive stripping voltammetry in the presence of α-lipoic acid

Cited by 19 publications

References 35 publications

Optimization of stripping voltammetric sensor by mixture design-artificial neural network-genetic algorithm for determination of trace copper(II) based on iodoquinol-carbon nanotube modified carbon paste electrode

Optimization of stripping voltammetric sensor by mixture design-artificial neural network-genetic algorithm for determination of trace copper(II) based on iodoquinol-carbon nanotube modified carbon paste electrode

Potentiometric determination of copper(II) ions based on a porphyrin derivative

Voltammetric Determination of Copper by Biosorption‐based Mesorhizobium Opportonistum Modified Microbial Biosensor

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