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Surface plasmon resonance optical sensor for detection of essential heavy metal ions with potential toxicity: copper, zinc and manganes.


Citation

Mat Yunus, Wan Mahmood and Yusof, Nor Azah and Yap, Wing Fen (2011) Surface plasmon resonance optical sensor for detection of essential heavy metal ions with potential toxicity: copper, zinc and manganes. Sensor Letters, 9 (5). pp. 1704-1711. ISSN 1546-198X

Abstract

In this work, surface plasmon resonance (SPR) spectroscopy had been studied for detection of essential heavy metal ions with potential for toxicity: copper, zinc and manganese ions (Cu2+, Zn2+ and Mn2+). The sensitivity of SPR optical sensor had been enhanced by introducing a thin crosslinked chitosan layer on a gold film. Crosslinked chitosan solution was synthesized by homogeneous reaction of medium molecular weight chitosan in aqueous acetic acid solution with glutaraldehyde as crosslinking agent. It was deposited on gold film by spin coating. From the results we found that the change in the resonance angle (Δθ) is directly proportional to the concentration of heavy metal ions solution (0.5-100 ppm). The sensitivity of this optical sensor for the studied heavy metal ions are in following order: Cu2+ > Zn2+ > Mn2+. The gold/chitosan interface in SPR technique is highly sensitive for these heavy metal ions with detection limit as low as 0.5 ppm.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.1166/sl.2011.1742
Publisher: American Scientific Publishers
Keywords: Surface Plasmon Resonance; Crosslinked chitosan; Copper; Zinc; Manganese lons.
Depositing User: Nur Farahin Ramli
Date Deposited: 02 Aug 2013 08:51
Last Modified: 20 Oct 2015 04:33
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1166/sl.2011.1742
URI: http://psasir.upm.edu.my/id/eprint/25016
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