Modular Flow-Through Platform for Spectroelectrochemical Analysis

Noyhouzer, Tomer; Snowden, Michael E.; Tefashe, Ushula M.; Mauzeroll, Janine

doi:10.1021/acs.analchem.6b04649

Cited by 5 publications

(3 citation statements)

References 50 publications

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“…This ensures that a random air-bubble will not block or significantly interfere with the measurement. The reference electrode is mounted through a hole in the flangeless screw at the outlet of the cell, as previous works 8,22 showed the importance of positioning the reference electrode downstream to prevent fouling of the fluent by the reference. A COMSOL simulation was also conducted to ensure the flow inside the cell was laminar (Figure S4).…”

Section: Resultsmentioning

confidence: 99%

The Best of Both Worlds: Combining Ultramicroelectrode and Flow Cell Technologies

Noyhouzer¹,

Perry²,

Vicente-Luis³

et al. 2018

J. Electrochem. Soc.

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A new type of an electrochemical flow cell designed for exchangeable ultramicroelectrodes (UMEs) is presented. The cell could be used with up to 8 different UMEs allowing one to use this cell for UME array measurements. The cell was characterized using both empirical data and finite element modeling. Au and Pt UMEs were used to detect catechol simultaneously, demonstrating the ability of this cell to be used as a sensory platform. The electroanalytical response of flow system was validated by direct measurements of H 2 O 2 concentrations. Finally, stochastic nanoparticle measurements were successfully performed using the flow system, highlighting the future possibilities of this system for environmental monitoring.

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Section: Resultsmentioning

confidence: 99%

The Best of Both Worlds: Combining Ultramicroelectrode and Flow Cell Technologies

Noyhouzer¹,

Perry²,

Vicente-Luis³

et al. 2018

J. Electrochem. Soc.

Self Cite

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“…Thus, two main advantages are obtained: a very high reproducibility and a high efficiency in the rate of mass transport. Some nice examples can be found in literature that were applied to the determination of iron compounds , cadmium , chlorpromazine and promethazine , among others .…”

Section: Advantages In Usementioning

confidence: 99%

Spectroelectrochemical Sensing: Current Trends and Challenges

et al. 2019

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Spectroelectrochemistry (SEC) has been used for more than 50 years, but this set of techniques has not been widely used for quantitative analysis. For many years, no commercial instruments were available, which made very difficult to spread the use of SEC. Nowadays, only the creativity of the researchers is required to exploit the capabilities of SEC. This review is written with the aim of showing the potential of SEC, mainly for analytical chemistry. Here, we explain what SEC is, how analytical responses can be obtained, why these techniques are useful for sensors, with a brief description of its advantages in use, and, finally, we try to show the challenges that must be addressed in the next years. SEC can resolve interesting analytical problems using the high amount of data provided by this intrinsic trilinear technique. Given the quantitative analysis point of view of this review, the discussion of the SEC techniques is focused on UV/Vis absorption, photoluminescence and Raman SEC.

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“…SEC in general, and UV/Vis-SEC in particular, is a group of instrumental techniques commonly used in the characterization of new materials and/or molecules, in the study of electron transfer processes, or in the study of reaction mechanisms [6,[14][15][16][17][18][19][20][21][22]. However, the great potential of these multi-response techniques for quantitative analysis has not been enough explored [1,2,4,5,12,[23][24][25][26]. Among all SEC techniques, the coupling of electrochemistry and UV/Vis absorption spectroscopy is the most successful one in the field of electroanalysis.…”

Section: Introductionmentioning

confidence: 99%

UV/Vis absorption spectroelectrochemistry of folic acid

Olmo

Rodriguez

Colina

et al. 2021

J Solid State Electrochem

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UV/Vis absorption spectroelectrochemistry is a very promising analytical technique due to the complementary information that is simultaneously obtained from electrochemistry and spectroscopy. In this work, this technique is used in a parallel configuration to study the oxidation of folic acid in alkaline medium. Herein, UV/Vis absorption spectroelectrochemistry has been used to detect both the oxidation products and the folic acid consumed at the electrode/solution interface, allowing us to develop an analytical protocol to quantify vitamin B9 in pharmaceutical tablets. Linear ranges of three orders of magnitude have been achieved in basic medium (pH = 12.9), obtaining high repeatability and low detection limits. The spectroelectrochemical determination of folic acid in pharmaceutical tablets at alkaline pH values is particularly interesting because of the changes that occur in the optical signal during the electrochemical oxidation of FA, providing results with very good figures of merit and demonstrating the utility and versatility of this hyphenated technique, UV/Vis absorption spectroelectrochemistry.

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Modular Flow-Through Platform for Spectroelectrochemical Analysis

Cited by 5 publications

References 50 publications

The Best of Both Worlds: Combining Ultramicroelectrode and Flow Cell Technologies

The Best of Both Worlds: Combining Ultramicroelectrode and Flow Cell Technologies

Spectroelectrochemical Sensing: Current Trends and Challenges

UV/Vis absorption spectroelectrochemistry of folic acid

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