Simultaneous Voltammetric/Amperometric Determination of Sulfide and Nitrite in Water at BDD Electrode

Baciu, Anamaria; Ardelean, Magdalena; Pop, Aniela; Pode, Rodica; Manea, Florica

doi:10.3390/s150614526

Cited by 31 publications

(16 citation statements)

References 21 publications

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“…22 The working potential was determined by scanning potential in the range from 0.5 V to 1.0 V with a step of 50 mV in 0.1 mol×L -1 PBS in the presence of 10 -4 mol×L -1 melatonin ( Figure 7). The dependence from the data obtained, current vs potential, revealed that the optimal working potential for oxidation of melatonin is 0.8 V.…”

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confidence: 99%

Voltammetric determination of melatonin using a graphene-based sensor in pharmaceutical products

Apetrei

2016

IJN

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Melatonin can be sensitively detected in pharmaceuticals by cyclic voltammetry and fixed-potential amperometry using a graphene-based sensor. The sensor characterization of cyclic voltammetry constantly provides high values of electrode active area and heterogeneous rate constant. In optimal conditions, the sensor was applied for the determination of melatonin in different pharmaceutical samples. The sensitivity to melatonin was 0.0371 A M −1 , and the limit of detection was 0.87×10 −6 M. The data obtained by using the graphene-based sensor for the detection of melatonin in pharmaceutical products were in good agreement with the data provided by the producer. Since no interferences from the excipients were found, using a separation technique was not necessary. Additionally, the low price, ease of handling, small amount of sample, short time per analysis, and possibility of automation are the important advantages that recommend this methodology for quality control of pharmaceuticals.

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confidence: 99%

Voltammetric determination of melatonin using a graphene-based sensor in pharmaceutical products

Apetrei

2016

IJN

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“…Anamaria et al. reported voltammetric‐ and amperometric‐based sensors using a commercial BDDE for simultaneous detection of nitrite and sulfide in water [49] . The determination and direct electro‐oxidation of nitrite and sulfide were probed by CV and square‐wave‐ and differential‐pulsed voltammetry techniques.…”

Section: Sulfide Sensing Strategies In Controlled Potential Techniquesmentioning

confidence: 99%

Controlled‐Potential‐Based Electrochemical Sulfide Sensors: A Review

Shah

Aziz

Oyama

et al. 2020

The Chemical Record

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Due to their potential applications in industry and potent toxicity to the environment, sulfides and their detection have attracted the attention of researchers. To date, a large number of controlled‐potential techniques for electrochemical sulfide sensors have been developed, thanks to their simplicity, reasonable limit of detection (LOD), and good selectivity. Different researchers have applied different strategies for developing selective and sensitive sulfide sensors. However, there has been no systematic review on controlled‐potential techniques for sulfide sensing. In light of this absence, the main aim of this review article is to summarize various strategies for detecting sulfide in different media. The efficiencies of the developed sulfide sensors for detecting sulfide in its various forms are determined, and the essential parameters, including sensing strategies, working electrodes, detection media, pH, LOD, sensitivity, and linear detection range, are emphasized in particular. Future research in this area is also recommended. It is expected that this review will act as a basis for further research on the fabrication of sulfide sensors for practical applications.

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“…The key to successful application of electrochemical methods in pesticides detection is adequate electrode material. The boron-doped diamond electrode (BDD) is recognized as one of the most versatile electrode materials used in electroanalysis, due to its wide potential window in aqueous solution, low background currents, and long-term stability [ 13 , 14 , 15 ]. Very promising results have been found for BDD application in the electrochemical detection of pesticides [ 16 , 17 , 18 , 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Voltammetric Detection of Carbaryl and Paraquat Pesticides on Graphene-Modified Boron-Doped Diamond Electrode

Pop

Manea

Flueras

et al. 2017

Sensors

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Monitoring of pesticide residues in food, beverages, and the environment requires fast, versatile, and sensitive analyzing methods. Direct electrochemical detection of pesticides could represent an efficient solution. Adequate electrode material, electrochemical technique, and optimal operation parameters define the detection method for practical application. In this study, cyclic voltammetric and differential pulse voltammetric techniques were used in order to individually and simultaneously detect two pesticides, i.e., carbaryl (CR) and paraquat (PQ), from an acetate buffer solution and also from natural apple juice. A graphene-modified boron-doped diamond electrode, denoted BDDGR, was obtained and successfully applied in the simultaneous detection of CR and PQ pesticides, using the differential pulse voltammetric technique with remarkable electroanalytical parameters in terms of sensitivity: 33.27 μA μM−1 cm−2 for CR and 31.83 μA μM−1 cm−2 for PQ. These outstanding results obtained in the acetate buffer supporting electrolyte allowed us to simultaneously detect the targeted pesticides in natural apple juice.

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Simultaneous Voltammetric/Amperometric Determination of Sulfide and Nitrite in Water at BDD Electrode

Cited by 31 publications

References 21 publications

Voltammetric determination of melatonin using a graphene-based sensor in pharmaceutical products

Voltammetric determination of melatonin using a graphene-based sensor in pharmaceutical products

Controlled‐Potential‐Based Electrochemical Sulfide Sensors: A Review

Simultaneous Voltammetric Detection of Carbaryl and Paraquat Pesticides on Graphene-Modified Boron-Doped Diamond Electrode

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