A Disposable Copper (II) Ion Biosensor Based on Self-Assembly of L-Cysteine on Gold Nanoparticle-Modified Screen-Printed Carbon Electrode
Joint Authors
Heng, Lee Yook
Pooi See, Wong
Nathan, Sheila
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-12-21
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
A disposable copper (II) ion biosensor based on self-assembly of L-cysteine on gold nanoparticle-modified screen-printed carbon electrode was fabricated.
The electrode was modified by attaching gold nanoparticles onto the surface of screen-printed carbon electrode through seed mediated growth method followed by self-assembly of L-cysteine.
As demonstrated by differential pulse voltammetry, the sensor exhibited high sensitivity to copper (II) ion down to ppb (parts per billion) levels.
Optimization of various experimental parameters such as pH, buffer concentration, and preconcentration time, which influenced the performance of the biosensor, was investigated.
The sensor demonstrated a wide linear response range from 10 to 0.005 ppm (r=0.9870), with a lower detection limit of 8 ppb using 10 min of preconcentration time.
The sensor based on screen-printed electrode provides a cost-effective means of application of copper ion sensor for the detection of ppb level of copper ions in water.
American Psychological Association (APA)
Pooi See, Wong& Nathan, Sheila& Heng, Lee Yook. 2011. A Disposable Copper (II) Ion Biosensor Based on Self-Assembly of L-Cysteine on Gold Nanoparticle-Modified Screen-Printed Carbon Electrode. Journal of Sensors،Vol. 2011, no. 2011, pp.1-5.
https://search.emarefa.net/detail/BIM-455692
Modern Language Association (MLA)
Pooi See, Wong…[et al.]. A Disposable Copper (II) Ion Biosensor Based on Self-Assembly of L-Cysteine on Gold Nanoparticle-Modified Screen-Printed Carbon Electrode. Journal of Sensors No. 2011 (2011), pp.1-5.
https://search.emarefa.net/detail/BIM-455692
American Medical Association (AMA)
Pooi See, Wong& Nathan, Sheila& Heng, Lee Yook. A Disposable Copper (II) Ion Biosensor Based on Self-Assembly of L-Cysteine on Gold Nanoparticle-Modified Screen-Printed Carbon Electrode. Journal of Sensors. 2011. Vol. 2011, no. 2011, pp.1-5.
https://search.emarefa.net/detail/BIM-455692
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-455692