نتایج جستجو برای: modified screen printed electrode

تعداد نتایج: 402482  

Journal: :International Journal of Biosensors & Bioelectronics 2021

2016
Xiaoyan Ma Hongqiao Yang Huabin Xiong Xiaofen Li Jinting Gao Yuntao Gao

In this paper, the multi-walled carbon nanotubes modified screen-printed electrode (MWCNTs/SPE) was prepared and the MWCNTs/SPE was employed for the electrochemical determination of the antioxidant substance chlorogenic acids (CGAs). A pair of well-defined redox peaks of CGA was observed at the MWCNTs/SPE in 0.10 mol/L acetic acid-sodium acetate buffer (pH 6.2) and the electrode process was ads...

2017
Gonzalo Martínez-García Elena Pérez-Julián Lourdes Agüí Naomí Cabré Jorge Joven Paloma Yáñez-Sedeño José Manuel Pingarrón

A biosensor for 3-hydroxybutyrate (3-HB) involving immobilization of the enzyme 3-hydroxybutyrate dehydrogenase onto a screen-printed carbon electrode modified with reduced graphene oxide (GO) and thionine (THI) is reported here. After addition of 3-hydroxybutyrate or the sample in the presence of NAD⁺ cofactor, the generated NADH could be detected amperometrically at 0.0 V vs. Ag pseudo refere...

1999
Won-Yong Lee Seung-Ryeol Kim Tae-Han Kim Kang Shin Lee Min-Chol Shin Je-Kyun Park

A conductometric urea biosensor based on sol–gel-immobilized urease on a screen-printed inter-digitated array (IDA) electrode has been developed. The screen-printed thick-film IDA electrode has proven to be an excellent conductometric transducer in which the admittance signal was dominated by the conductance signal and the resulting dynamic range was wide enough to be employed for the construct...

2013
Peter A. Baker

Vapor-phase detection of the model organophosphate (OP) malathion was achieved using enzymes encapsulated in peptide nanotubes and attached to gold screen printed electrodes. The peptide nanotubes had horseradish peroxidase (HRP) encapsulated inside and both acetylthiocholine (ASCh) and acetylcholinesterase (AChE) coated on the outside. ASCh hydrolysis, which produces thiocholine, was catalyzed...

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