Microscale reactor embedded with Graphene/hierarchical gold nanostructures for electrochemical sensing: application to the determination of dopamine

This work contributes to a deeper understanding of the effects of functional 2D nanomaterials on the electrochemical sensing performance of SPE-based portable sensors for the rapid, accurate, and on-site determination of CAP in food samples.

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Quantum Dots as Components of Electrochemical Sensing Platforms for the Detection of Environmental and Food Pollutants: a Review

Journal of AOAC International ◽

10.5740/jaoacint.17-0169 ◽

2017 ◽

Vol 100 (4) ◽

pp. 950-961 ◽

Cited By ~ 17

Author(s):

María Pedrero ◽

Susana Campuzano ◽

José M Pingarrón

Keyword(s):

Quantum Dots ◽

Signal Amplification ◽

Cost Effective ◽

Ease Of Use ◽

Electrochemical Sensing ◽

Multiplexed Detection ◽

Sensing Platforms ◽

Target Analytes

Abstract The determination of organic and inorganic environmental and food pollutants is a key matter of concern in analytical chemistry due to their effects as a serious threat to human health. Focusing on this issue, several methodologies involving the use of nanostructured electrochemical platforms have been recently reported in the literature. Among these methods, those employing the use of quantum dots (QDs) stand out because of features such as signal amplification, good reproducibility and selectivity, and the possibility for multiplexed detection, and because they preserve the outstanding characteristics of electrochemical methodologies with respect to simplicity, ease-of-use, and cost-effective instrumentation. This review describes recent electrochemical strategies, in which design QDs play a key role, for the determination of pollutants in food and environmental samples. The particular role of QDs in the reported methodologies, their preparation, and the electrochemical platform design, as well as the advantages that QDs provide in the analysis of target analytes, are critically discussed.

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Controlled synthesis of dendritic gold nanostructures by graphene oxide and their morphology-dependent performance for iron detection in coastal waters

RSC Advances ◽

10.1039/c6ra27075a ◽

2017 ◽

Vol 7 (26) ◽

pp. 15833-15841 ◽

Cited By ~ 15

Author(s):

Haitao Han ◽

Dawei Pan ◽

Chenchen Wang ◽

Rilong Zhu

Keyword(s):

Graphene Oxide ◽

Coastal Waters ◽

Voltammetric Determination ◽

Gold Nanostructures ◽

Controlled Synthesis

Dendritic gold nanostructures were controllably synthesized by graphene oxide for voltammetric determination of Fe(iii) in coastal waters.

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Flexible graphene oxide−wrapped SnO2 hollow spheres with high electrochemical sensing performance in simultaneous determination of 4−aminophenol and 4−chlorophenol

Electrochimica Acta ◽

10.1016/j.electacta.2017.08.043 ◽

2017 ◽

Vol 250 ◽

pp. 1-9 ◽

Cited By ~ 26

Author(s):

Tian Gan ◽

Zhikai Wang ◽

Yan Wang ◽

Xiangyu Li ◽

Junyong Sun ◽

...

Keyword(s):

Graphene Oxide ◽

Simultaneous Determination ◽

Hollow Spheres ◽

Electrochemical Sensing ◽

Sensing Performance

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Surface-Enhanced Oxidation and Determination of Isothipendyl Hydrochloride at an Electrochemical Sensing Film Constructed by Multiwalled Carbon Nanotubes

International Journal of Electrochemistry ◽

10.1155/2012/875631 ◽

2012 ◽

Vol 2012 ◽

pp. 1-6

Author(s):

S. N. Prashanth ◽

Shankara S. Kalanur ◽

Nagappa L. Teradal ◽

J. Seetharamappa

Keyword(s):

Limit Of Detection ◽

Biological Fluids ◽

Differential Pulse ◽

Electrochemical Sensing ◽

Good Precision ◽

Multiwalled Carbon ◽

Limit Of Quantification ◽

Surface Enhanced ◽

Ph Range

The electrochemical behavior of isothipendyl hydrochloride (IPH) was investigated at bare and multiwalled-carbon-nanotube modified glassy carbon electrode (MWCNT-GCE). IPH (55 μM) showed two oxidation peaks in Britton-Robinson (BR) buffer of pH 7.0. The oxidation process of IPH was observed to be irreversible over the pH range of 2.5–9.0. The influence of pH, scan rate, and concentration of the drug on anodic peak was studied. A differential pulse voltammetric method with good precision and accuracy was developed for the determination of IPH in pure and biological fluids. The peak current was found to be linearly dependent on the concentration of IPH in the range of 1.25–55 μM. The values of limit of detection and limit of quantification were noticed to be 0.284 and 0.949 μM, respectively.

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