Development of square wave voltammetry method for the assessment of organophosphorus compound impact on the cholinesterase of pheretima with 2,6-dichloroindophenol as a redox indicator

Qiu, Jingxia; Chen, Jin; Ma, Qianqian; Miao, Yuqing

doi:10.1016/j.chemosphere.2009.05.004

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…The detection of organophosphorous pesticides was achieved by following the electrochemical activity of dichloroindophe- nol with thiocholine that was a product created by enzymatic reaction of acetylthiocholine with cholinesterase [140]. A two-phase square-wave voltammetry has been employed as a tool for the detection of other similar ecotoxic compounds.…”

Section: Analytical and Biochemical Applications Of Square-wave Voltamentioning

confidence: 99%

Square‐Wave Voltammetry: A Review on the Recent Progress

et al. 2013

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A review on the recent progress of square-wave voltammetry is presented, covering the period of the last five years. The review addresses the new theoretical development of the technique as well as its application for mechanistic purposes, electrode kinetic measurements, biochemical and analytical applications. Besides, a few novel methodological modifications are proposed that might expand the scope and application of the technique.

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Section: Analytical and Biochemical Applications Of Square-wave Voltamentioning

confidence: 99%

Square‐Wave Voltammetry: A Review on the Recent Progress

et al. 2013

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“…Square-Wave Voltammetry. A wave voltammetry (SWV) method was developed for the assessment of the impact of OP compounds on the ChE of Pheretima with 2,6-dichloroindophenol (2,6-DCIP) as a redox indicator 114. The thiocholine (RSH) produced from the AChE hydrolysis of ATCh reacts with 2,6-DCIP, a blue colored compound, subsequently reduced to a colorless product 2,6-DCIP Re .…”

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confidence: 99%

History and New Developments of Assays for Cholinesterase Activity and Inhibition

2010

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“…This suggests that the distribution equilibrium of indophenol acetate between the two phases is formed quickly. The voltammogram gives the E pa of À 0.014 V, the E pc of À 0.038 V, and the peak separation of 0.024 V, according with the reaction mechanism of two-electron and two-proton [18,19]. The sharp peak with a small peak separation reveals a rapid electrochemistry of indophenol acetate.…”

Section: Resultsmentioning

confidence: 99%

A Uniquely Configured Acetylcholinesterase‐Lecithin Biomimetic Sensing Structure at Cyclohexane/Water Interface for Electrochemical Determination of Fenthion in Organic Solvent

Qiu

et al. 2010

Electroanalysis

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An acetylcholinesterase (AChE)-lecithin biomimetic structure was constructed at the oil/water interface for the direct determination of fenthion in cyclohexane. Indophenol acetate in oil phase was hydrolyzed by AChE at the two-phase interface to produce indophenol. Square wave voltammetry was used to monitor the current decrease of substrate to assess AChE activity. The AChE incorporated in the lecithin-based biomimetic layer possessed higher enzymatic activity and was more sensitive to fenthion inhibition than freestanding AChE. A linear relationship between the inhibition percentage and logarithm of fenthion concentration was obtained in a concentration range from 1 ng/mL to 1 mg/mL.

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Development of square wave voltammetry method for the assessment of organophosphorus compound impact on the cholinesterase of pheretima with 2,6-dichloroindophenol as a redox indicator

Cited by 9 publications

References 23 publications

Square‐Wave Voltammetry: A Review on the Recent Progress

Square‐Wave Voltammetry: A Review on the Recent Progress

History and New Developments of Assays for Cholinesterase Activity and Inhibition

A Uniquely Configured Acetylcholinesterase‐Lecithin Biomimetic Sensing Structure at Cyclohexane/Water Interface for Electrochemical Determination of Fenthion in Organic Solvent

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