Development of a Spectrophotometric Optode for the Determination of Hg(II)

A new simple and inexpensive optical chemical sensor for mercury(II) ions is presented. The mercury sensing system has prepared by incorporating of l-[2-pyridylazo]-2-naphthol as a suitable ligand for Hg(II) on triacetyl cellulose. The proportionality in intensity of the membrane color on the optode...

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Bibliographic Details
Published inIEEE sensors journal Vol. 8; no. 4; pp. 347 - 353
Main Authors Ensafi, A.A., Fouladgar, M.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.04.2008
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Biomembranes
Chemicals
Color
Colorimetry
Delay
Dynamic range
Fluorescence
Leaching
Ligands
Mercury(II)
Optical scattering
Optical sensors
optode
PAN
Particle beam optics
Screening
Sensors
Spectrophotometry
Spectroscopy
Visual
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Summary:A new simple and inexpensive optical chemical sensor for mercury(II) ions is presented. The mercury sensing system has prepared by incorporating of l-[2-pyridylazo]-2-naphthol as a suitable ligand for Hg(II) on triacetyl cellulose. The proportionality in intensity of the membrane color on the optodes loaded with varying amounts of Hg(II) suggests its potential applications for screening of Hg(II) in aqueous samples by visual colorimetry. The optode has a dynamic range 1.0 to 1000.0 muM with a limit of detection of 0.8 muM Hg(II). Different experimental parameters such as variable affecting on sensor preparation and pH of the sample solution plus response time were studied. The optodes developed in the present work were found to be stable, cost effective, easy to prepare, and efficient for direct determination of Hg(II) in a variety of aqueous samples using spectrophotometric method.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2008.917482