Recent advances in electrochemical detection of important sulfhydryl-containing compounds

Zlámalová, Magda; Nesměrák, Karel

doi:10.1007/s00706-016-1757-z

Cited by 6 publications

(3 citation statements)

References 107 publications

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“…Although there are numerous research articles and several review articles on electrochemical sulfide sensing, none have focused on the summarization of all the possible sensing strategies. [14,34,39,40] Therefore, this review summarizes the strategies in the controlled-potential electrochemical sensing method for sulfide and illustrates the groundwork of multiple approaches for sulfide detection. This collection of information is derived from a wide variety of sources and covers the critical criteria and salient points of each technique.…”

Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 99%

“…The adopted sensing strategies, in addition to the electrochemical, chemical, and physical aspects of the electrode materials, play important roles in the selective and sensitive detection of sulfide in various media using controlled‐potential techniques. Although there are numerous research articles and several review articles on electrochemical sulfide sensing, none have focused on the summarization of all the possible sensing strategies [14,34,39,40] . Therefore, this review summarizes the strategies in the controlled‐potential electrochemical sensing method for sulfide and illustrates the groundwork of multiple approaches for sulfide detection.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Controlled‐Potential‐Based Electrochemical Sulfide Sensors: A Review

Shah

Aziz

Oyama

et al. 2020

The Chemical Record

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“…One of the earliest methods developed was the detection of thiols using mercury amalgam electrodes . However, a concern with the potential toxicity of mercury‐based electrodes led to the investigation of chemically modified electrodes and in situ reagents for electrochemical‐based detection of thiols .…”

Section: Introductionmentioning

confidence: 99%

Detection of Thiols by o‐Quinone Nanocomposite Modified Electrodes

2016

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A chemically modified glassy carbon (GC) electrode was developed as an amperometric sensor for detection of biological thiols. The electrode was modified by inclusion of co‐enzyme pyrroloquinoline quinone (PQQ) and a co‐catalyst of oxidized single wall carbon nanotubes (Ox‐SWNT) into a gold polypyrrole (Au‐PPy) nanocomposite matrix. The electrode (PQQ/Ox‐SWNT/Au‐PPy/GC) was characterized using scanning electron microscopy and cyclic voltammetry. Optimal conditions for the PQQ/Ox‐SWNT/Au‐PPy/GC electrode were determined and then utilized for the amperometric detection of L‐cysteine, N‐acetyl‐L‐cysteine, L‐penicillamine and D, L‐glutathione. The electrochemical response for each thiol in pH 3.2 citrate phosphate buffer at +450 mV (vs. Ag/AgCl) was found to be linear with limit of detections (LOD, S/N=3) ranging from 0.50 µM for L‐penicillamine to 1.55 µM for D, L‐glutathione with sensitivities of 30.2 nA/µM and 3.6 nA/µM respectively. The electrode design is simple and easy to construct using a minimum amount of co‐enzyme and co‐catalyst, resulting in detection methods with very good stability and improved sensitivity for thiol detection.

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