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Browsing by Subject "Chemical detection"

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3D Capillary-Driven Paper-Based Sequential Microfluidic Device for Electrochemical Sensing Applications

Yakoh A.; Chaiyo S.; Siangproh W.; Chailapakul O. (2019)

This article describes the device design and fabrication of two different configurations (flow-through and stopped-flow) of a sequential fluid delivery platform on a microfluidic paper-based device. The developed device ...
A fast and highly sensitive detection of cholesterol using polymer microfluidic devices and amperometric system

Ruecha N.; Siangproh W.; Chailapakul O. (2011)

In this work, the rapid detection of cholesterol using poly(dimethylsiloxane) microchip capillary electrophoresis, based on the coupling of enzymatic assays and electrochemical detection, was developed. Direct amperometric ...
A multilayer microfluidic paper coupled with an electrochemical platform developed for sample separation and detection of dopamine

Khamcharoen W.; Siangproh W. (2021)

One of the primary challenges for the development of electrochemical sensors for dopamine (DA) is the lack of selectivity due to the major interference from ascorbic acid (AA) which is oxidized at a potential close to the ...
A novel paper-based device coupled with a silver nanoparticle-modified boron-doped diamond electrode for cholesterol detection

Nantaphol S.; Chailapakul O.; Siangproh W. (2015)

A novel paper-based analytical device (PAD) coupled with a silver nanoparticle-modified boron-doped diamond (AgNP/BDD) electrode was first developed as a cholesterol sensor. The AgNP/BDD electrode was used as working ...
A simple paper-based approach for arsenic determination in water using hydride generation coupled with mercaptosuccinic-acid capped CdTe quantum dots

Thepmanee O.; Prapainop K.; Noppha O.; Rattanawimanwong N.; Siangproh W.; Chailapakul O.; Songsrirote K. (2020)

This research aims to develop a simple paper-based device for arsenic detection in water samples where a hydride generation technique coupled with mercaptosuccinic acid-capped CdTe quantum dots (MSA-CdTe QDs) as a detection ...
An automated fast-flow/delayed paper-based platform for the simultaneous electrochemical detection of hepatitis B virus and hepatitis C virus core antigen

Boonkaew S.; Yakoh A.; Chuaypen N.; Tangkijvanich P.; Rengpipat S.; Siangproh W.; Chailapakul O. (2021)

Electrochemical paper-based analytical devices (ePADs) are useful analytical devices that serve as point-of-care testing (POCT) devices for various clinical biomarkers in view of their simplicity, portability, and low-cost ...
Application of surface plasmon resonance biosensor for the detection of Candida albicans

Yodmongkol S.; Thaweboon S.; Thaweboon B.; Puttharugsa C.; Sutapun B.; Amarit R.; Somboonkaew A.; Srikhirin T. (2016)

In this study, surface plasmon resonance imaging (SPR imaging) was developed for the detection of Candida albicans which is a causal agent of oral infection. The detection was based on the sandwich assay. The capture ...
Biomedical probes based on inorganic nanoparticles for electrochemical and optical spectroscopy applications

Yakoh A.; Pinyorospathum C.; Siangproh W.; Chailapakul O. (2015)

Inorganic nanoparticles usually provide novel and unique physical properties as their size approaches nanometer scale dimensions. The unique physical and optical properties of nanoparticles may lead to applications in a ...
Detection of the shrimp pathogenic bacteria, Vibrio harveyi, by a quartz crystal microbalance-specific antibody based sensor

Buchatip S.; Ananthanawat C.; Sithigorngul P.; Sangvanich P.; Rengpipat S.; Hoven V.P. (2010)

An immunosensor based on a quartz crystal microbalance (QCM) was developed for detection of Vibrio harveyi (V. harveyi), a pathogenic bacteria causing morbidity and even a high level of fatality in commercial shrimp cultures, ...
Development of gold nanoparticles modified screen-printed carbon electrode for the analysis of thiram, disulfiram and their derivative in food using ultra-high performance liquid chromatography

Charoenkitamorn K.; Chailapakul O.; Siangproh W. (2015)

For the first time, gold nanoparticles (AuNPs) modified screen-printed carbon electrode (SPCE) was developed as working electrode in ultra-high performance liquid chromatography (UHPLC) coupled with electrochemical detection ...
Electrochemical Capillary-Flow Immunoassay for Detecting Anti-SARS-CoV-2 Nucleocapsid Protein Antibodies at the Point of Care

Samper I.C.; Sánchez-Cano A.; Khamcharoen W.; Jang I.; Siangproh W.; Baldrich E.; Geiss B.J.; Dandy D.S.; Henry C.S. (2021)

Rapid and inexpensive serological tests for SARS-CoV-2 antibodies are needed to conduct population-level seroprevalence surveillance studies and can improve diagnostic reliability when used in combination with viral tests. ...
Electrochemical capillary-flow immunoassay for the detection of anti-sars-cov-2 antibodies

Samper I.C.; Sánchez-Cano A.; Khamcharoen W.; Jang I.; Geiss B.J.; Dandy D.S.; Henry C.S. (2020)

Current efforts to tackle the COVID-19 pandemic are limited by the lack of a fast, accurate and low-cost diagnostic test to determine if an individual is infected and contagious. We have developed a capillary-flow immunoassay ...
Electrochemical detection of c-reactive protein based on anthraquinone-labeled antibody using a screen-printed graphene electrode

Jampasa S.; Siangproh W.; Laocharoensuk R.; Vilaivan T.; Chailapakul O. (2018)

In this present work, a novel electrochemical immunosensor employing a screen-printed graphene electrode (SPGE) for a simple and highly sensitive determination of C-reactive protein (CRP) in a sandwich-type format was ...
Electrochemical detection of NOx gas based on disposable paper-based analytical device using a copper nanoparticles-modified screen-printed graphene electrode

Pungjunun K.; Chaiyo S.; Praphairaksit N.; Siangproh W.; Ortner A.; Kalcher K.; Chailapakul O.; Mehmeti E. (2019)

A disposable gas-sensing paper-based device (gPAD) was fabricated in origami design which integrates the gas adsorbent and the electrochemical detection zone in a single device. The gPAD for the determination of NOx gas ...
Electrochemical paper-based peptide nucleic acid biosensor for detecting human papillomavirus

Teengam P.; Siangproh W.; Tuantranont A.; Henry C.S.; Vilaivan T.; Chailapakul O. (2017)

A novel paper-based electrochemical biosensor was developed using an anthraquinone-labeled pyrrolidinyl peptide nucleic acid (acpcPNA) probe (AQ-PNA) and graphene-polyaniline (G-PANI) modified electrode to detect human ...
Electrochemically reduced graphene oxide-modified screen-printed carbon electrodes for a simple and highly sensitive electrochemical detection of synthetic colorants in beverages

Jampasa S.; Siangproh W.; Duangmal K.; Chailapakul O. (2016)

A simple and highly sensitive electrochemical sensor based on an electrochemically reduced graphene oxide-modified screen-printed carbon electrode (ERGO-SPCE) for the simultaneous determination of sunset yellow (SY) and ...
Graphene-polyaniline modified electrochemical droplet-based microfluidic sensor for high-throughput determination of 4-aminophenol

Rattanarat P.; Suea-Ngam A.; Ruecha N.; Siangproh W.; Henry C.S.; Srisa-Art M.; Chailapakul O. (2016)

We report herein the first development of graphene-polyaniline modified carbon paste electrode (G-PANI/CPE) coupled with droplet-based microfluidic sensor for high-throughput detection of 4-aminophenol (4-AP) in pharmaceutical ...
High sensitivity and specificity simultaneous determination of lead, cadmium and copper using μpAD with dual electrochemical and colorimetric detection

Chaiyo S.; Apiluk A.; Siangproh W.; Chailapakul O. (2016)

A bismuth-modified electrode can increase the sensitivity of lead and cadmium detection. However, use of a bismuth-modified electrode in the detection of copper remains limited because the bismuth signal overlaps with the ...
Janus electrochemistry: Simultaneous electrochemical detection at multiple working conditions in a paper-based analytical device

Nantaphol S.; Kava A.A.; Channon R.B.; Kondo T.; Siangproh W.; Chailapakul O.; Henry C.S. (2019)

The simultaneous detection of multiple analytes from a single sample is a critical tool for the analysis of real world samples. However, this is challenging to accomplish in the field by current electroanalytical techniques, ...
Lab-on-paper with dual electrochemical/ colorimetric detection for simultaneous determination of gold and iron

Apilux A.; Dungchai W.; Siangproh W.; Praphairaksit N.; Henry C.S.; Chailapakul O. (2010)

A novel lab-on-paper device combining electrochemical and colorimetric detection for the rapid screening of Au(III) in the presence of a common interference, Fe(III), in industrial waste solutions is presented here. With ...

Now showing items 1-20 of 31

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