Publication:
Sodium dodecyl sulfate-modified electrochemical paper-based analytical device for determination of dopamine levels in biological samples

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Issued Date

2012

Resource Type

Article

File Type

application/pdf

ISSN

32670

DOI

10.1016/j.aca.2012.07.003

Other identifier(s)

2-s2.0-84865552000

Rights Holder(s)

มหาวิทยาลัยศรีนครินทรวิโรฒ

Bibliographic Citation

Analytica Chimica Acta. Vol 744, No. (2012), p.1-7

Suggested Citation

Rattanarat P., Dungchai W., Siangproh W., Chailapakul O., Henry C.S. Sodium dodecyl sulfate-modified electrochemical paper-based analytical device for determination of dopamine levels in biological samples. Analytica Chimica Acta. Vol 744, No. (2012), p.1-7. doi:10.1016/j.aca.2012.07.003 Retrieved from: https://hdl.handle.net/20.500.14740/6968

Title

Sodium dodecyl sulfate-modified electrochemical paper-based analytical device for determination of dopamine levels in biological samples

Author(s)

Rattanarat P.
 Dungchai W.
 Siangproh W.
 Chailapakul O.
 Henry C.S.

Abstract

We report the development of an electrochemical paper-based analytical device (ePAD) for the selective determination of dopamine (DA) in model serum sample. The ePAD device consists of three layers. In the top layer, SU-8 photoresist defines a hydrophilic sample application spot on the filter paper. The middle layer was made from transparency film and contained two holes, one for sample preconcentration and the other for the surfactant to allow transfer to the third layer. A screen-printed carbon electrode formed the bottom layer and was used for electrochemical measurements. In the absence of the anionic surfactant, sodium dodecyl sulfate (SDS), the oxidation peaks of DA, ascorbic acid (AA) and uric acid (UA) overlapped. With the addition of SDS, the DA oxidation peak shifted to more negative values and was clearly distinguishable from AA and UA. The oxidation potential shift was presumably due to preferential electrostatic interactions between the cationic DA and the anionic SDS. Indeed, whilst the SDS-modified paper improved the DA current five-fold, the non-ionic Tween-20 and cationic tetradecyltrimethylammonium bromide surfactants had no effect or reduced the current, respectively. Furthermore, only the SDS-modified paper showed the selective shift in oxidation potential for DA. DA determination was carried out using square-wave voltammetry between -0.2 and 0.8. V vs. Ag/AgCl, and this ePAD was able to detect DA over a linear range of 1-100μM with a detection limit (S/N = 3) of 0.37μM. The ePAD seems suitable as a low cost, easy-to-use, portable device for the selective quantitation of DA in human serum samples. © 2012 Elsevier B.V..

Subject(s)

Ascorbic acids
 Dopamine
 ELectrochemical detection
 Human serum
 Paper-based analytical device
 Sodium dodecyl sulfate
 Uric acids
 Amines
 Analytic equipment
 Anionic surfactants
 Body fluids
 Cationic surfactants
 Diffusers (optical)
 Ketones
 Neurophysiology
 Organic acids
 Oxidation
 Paper
 Photoresists
 Sulfur compounds
 Voltammetry
 Sodium sulfate
 Ascorbic acid
 Cationic surfactant
 Dodecyl sulfate sodium
 Dopamine
 Silver
 Silver chloride
 Tetradecyltrimethylammonium bromide
 Unclassified drug
 Uric acid
 Analytical equipment
 Article
 Blood sampling
 Chemical interaction
 Concentration (parameters)
 Dopamine blood level
 Dopamine metabolism
 Electrochemical analysis
 Electrochemical paper based analytical device
 Film
 Filter
 Hydrophilicity
 Limit of detection
 Linear system
 Oxidation
 Paper
 Potentiometry
 Priority journal
 Quantitative analysis
 Static electricity
 Dopamine
 Electrochemical Techniques
 Equipment Design
 Humans
 Paper
 Sensitivity and Specificity
 Sodium Dodecyl Sulfate
 Amines
 Amperometry
 Ascorbic Acid
 Electrochemistry
 Layers
 Organic Acids
 Oxidation
 Sodium Sulfate
 Surfactants

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URI

https://hdl.handle.net/20.500.14740/6968

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Scopus: Year 1983-2021

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