Issue 6, 2008
From the journal:

Analyst

Whole cell environmental biosensor on diamond

Kwok Feng Chong,a   Kian Ping Loh,*a   Kailian Anga  and  Yen Peng Tingab  

* Corresponding authors

a Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore
E-mail: chmlohkp@nus.edu.sg

b Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore
E-mail: chetyp@nus.edu.sg

Abstract

A whole-cell environmental biosensor was fabricated on a diamond electrode. Unicellular microalgae Chlorella vulgaris was entrapped in the bovine serum albumin (BSA) membrane and immobilized directly onto the surface of a diamond electrode for heavy metal detection. We found that the unique surface properties of diamond reduce the electrode fouling problem commonly encountered with metal electrodes. The cell-based diamond biosensor can attain a detection limit of 0.1 ppb for Zn2+ and Cd2+, and exhibits higher detection sensitivity and stability compared to platinum electrodes.

Graphical abstract: Whole cell environmental biosensor on diamond

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Article information

DOI
https://doi.org/10.1039/B719881G
Article type
Communication
Submitted
04 Jan 2008
Accepted
05 Feb 2008
First published
18 Feb 2008

Analyst, 2008,133, 739-743

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Whole cell environmental biosensor on diamond

K. F. Chong, K. P. Loh, K. Ang and Y. P. Ting, Analyst, 2008, 133, 739 DOI: 10.1039/B719881G

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