Electrochemical Determination Of Dopamine And Uric Acid In Blood Serum Using Anionic Surfactants At Carbon Paste Electrodes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F20%3A39916832" target="_blank" >RIV/00216275:25310/20:39916832 - isvavai.cz</a>

Result on the web

<a href="https://mjas.analis.com.my/mjas/v24_n1/pdf/Berisha_24_1_11.pdf" target="_blank" >https://mjas.analis.com.my/mjas/v24_n1/pdf/Berisha_24_1_11.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Electrochemical Determination Of Dopamine And Uric Acid In Blood Serum Using Anionic Surfactants At Carbon Paste Electrodes

Original language description

A selective and sensitive method was developed for the simultaneous electrochemical determination of dopamine and uric acid by using a sodium dodecylbenzenesulfonate (SDBS) and sodium dodecyl sulfate (SDS) as a surface modifier of carbon paste electrodes (CPEs). At lower concentration of SDS and SDBS they form a negatively charged monolayer on CPE surface because of surfactants’ hydrophobic chain interaction with paraffin of CPE. Optimized concentration of surfactants was 2 mM for SDS and 1 mM for SDBS in phosphate buffer solution (0.1 M, pH 7 and pH 6, respectively). Compared with plain CPE, CPE modified with SDS (CPE-SDS) and CPE modified with SDBS (CPE-SDBS) have shown the improved electrochemical response of dopamine (DA) at 0.230 V and uric acid (UA) at 0.345 V due to electrostatic interactions between positively charged analytes and surface negatively charged of SDBS and SDS. Under optimal experimental conditions, the designed electrodes exhibited a wide range of linear response to DA from 0.53 μM to 31.6 μM and UA from 5.95 μM to 118.97 μM. The detection limits for DA and UA were found to be 0.26 and 1.10 µM with CPE-SDS, whilst 0.22 and 0.38 µM with CPE-SDBS. The CPE-SDBS and CPE-SDS showed good reproducibility, repeatability, stability and high selectivity for determination of DA and UA in blood serum samples.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

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Continuities

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Malaysian Journal of Analytical Sciences

ISSN

1394-2506

e-ISSN

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Volume of the periodical

24

Issue of the periodical within the volume

1

Country of publishing house

MY - MALAYSIA

Number of pages

10

Pages from-to

97-106

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85079715474