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Optical test strip for trace Hg(II) based on doped sol-gel film.


Yusof, Nor Azah and Wan Abdul Kadir, Wan Abdul Rahman (2009) Optical test strip for trace Hg(II) based on doped sol-gel film. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 72 (1). pp. 32-35. ISSN 0584-8539


Optical test strip based on the use of Br-PADAP as a sensitive reagent immobilised into sol–gel thin film for detection of Hg(II) in aqueous solution had been thoroughly carried out. It has a square-sensing zone (1.0 cm × 1.0 cm) containing the sensitive reagent necessary to produce response to trace level of mercury. This method offer sensitivity and simplicity in detecting Hg(II) as no prior treatment or extraction is required. A linear response was attained in the Hg(II) concentration in the range of 0.5–2.5 ppm with calculated limit of detection of 6.63 ppb. This method also showed a reproducible result with relative standard deviation (R.S.D.) of 2.15% and response time of ∼5 min. Interference studies showed that Al(III), Co(II) and Ni(II) significantly interfered during the determination. The developed sensor has been validated against Atomic Absorption Spectroscopy method and proven comparable.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science and Environmental Studies
DOI Number: https://doi.org/10.1016/j.saa.2008.07.019
Publisher: Elsevier
Keywords: Optical fibre chemical sensor; Doped sol–gel thin film; Hg(II) detection.
Depositing User: Najwani Amir Sariffudin
Date Deposited: 16 Oct 2013 02:13
Last Modified: 04 Nov 2015 03:55
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.saa.2008.07.019
URI: http://psasir.upm.edu.my/id/eprint/15951
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