Determination of 2‐thiothiazolidine‐4‐carboxylic acid in urine by liquid chromatography with electrochemical detection

Ciucu, Anton Alexandru; Baldwin, Richard P.

doi:10.1002/elan.1140040420

Cited by 10 publications

(3 citation statements)

References 21 publications

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“…By using different electronic mediators such as cobalt phthalocyanine [55,56,[65][66][67], tetracyano p-quinodimethane, tetrathiafulvalene and 1,1'-dimethyl-ferrocene [68][69][70] it was possible to decrease the applied potential. The interference due to oxidizable substances possibly present in real samples was dramatically decreased in this way.…”

Section: Pesticidesmentioning

confidence: 99%

Chemically Modified Electrodes in Biosensing

Ciucu¹

2014

J Biosens Bioelectron

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The development of chemical sensors has received a great deal of scientific interest in the last decades. Not only the chemical industry may benefit from these sensors but also the food industry, bio-industry, medicine, environmental control because of their capability to give continuously and reversibly a selective and fast response to the presence of a specific compound in a complex mixture of components, without perturbing the system. Biosensors combine the power of analytical detection techniques with the specificity of biological recognition system and therefore they are the most promising devices today about this selectivity. Furthermore, biosensors possess many unique features such as compact size, simplicity of use, one-step reagentless analysis, absence of radioactivity, etc., that make them very attractive alternatives to conventional bioanalytical techniques. The present short review highlights some modern aspects of Chemically Modified Electrodes (CMEs) based on redox enzymes used in amperometric biosensing, a detection method which has already found a large number of applications in health care, food industry and environmental analysis. Some relevant applications of amperometric biosensors based on CMEs to real sample analysis are also presented and some possible future trends highlighted.

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Section: Pesticidesmentioning

confidence: 99%

Chemically Modified Electrodes in Biosensing

Ciucu¹

2014

J Biosens Bioelectron

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“…The incorporation of electroactive materials into a carbon nanotubes paste electrode is advantageous and has been widely applied in the electroanalytical community [6,7]. Metallophthalocyanines have been used successfully in preparing voltammetric modified sensors due to their catalytic activity for a wide range of redox processes [8][9][10][11][12]. The sensitivity and the selectivity of the (bio)sensors can be greatly improved as a result of the electrocatalysis by metallophthalocyanines [13,14].…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic voltammetric determination of guanine at a cobalt phthalocyanine modified carbon nanotubes paste electrode

Balan

David

et al. 2011

Journal of Electroanalytical Chemistry

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“…They have been used successfully in preparing voltammetric modified sensors due to their catalytic activity for a wide range of redox processes. [40][41][42][43][44] One of the excellent mediation is attributed to phthalocyanines containing cobalt due to their high electron transfer ability.…”

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confidence: 99%

Electrochemistry and Detection of Dobutamine at Gold Nanoparticles Cobalt-Phthalocyanine Modified Carbon Paste Electrode

Atta¹,

Galal²,

Abdel-Gawad³

et al. 2015

J. Electrochem. Soc.

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Electrochemical sensor was fabricated for determination of dobutamine (DB) based on gold nanoparticles/cobaltphthalocyanine modified carbon paste electrode AuCoPcCPE. Two components in the composite structure contribute to the faradaic signal at the interface of the electrode: conduction of Au-nano-centers and charge mediation through cobalt-phthalocyanine moieties. The proposed sensor exhibited excellent performance for the determination of DB in human urine samples with satisfying recovery results. Low detection limit of 0.84 × 10 −7 mol L −1 in the linear dynamic range of 6.0 × 10 −6 mol L −1 to 2.0 × 10 −4 mol L −1 was obtained at the AuCoPcCPE sensor. It was possible to simultaneously and selectively determine DB in each of the following mixtures: DB/Morphine, DB/paracetamol using the AuCoPcCPE sensor. The proposed sensor exhibited high reproducibility, enhanced sensitivity, selectivity, and unique stability.

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Determination of 2‐thiothiazolidine‐4‐carboxylic acid in urine by liquid chromatography with electrochemical detection

Cited by 10 publications

References 21 publications

Chemically Modified Electrodes in Biosensing

Chemically Modified Electrodes in Biosensing

Electrocatalytic voltammetric determination of guanine at a cobalt phthalocyanine modified carbon nanotubes paste electrode

Electrochemistry and Detection of Dobutamine at Gold Nanoparticles Cobalt-Phthalocyanine Modified Carbon Paste Electrode

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