A Sensitive and Selective Fluorescence Sensor for the Detection of Arsenic(III) in Organic Media

Arsenic contamination is a leading environmental problem. As such, levels of this toxic metalloid must be constantly monitored by reliable and low-cost methodologies. Because the currently accepted upper limit for arsenic in water is 10 ppb, very sensitive and selective detection strategies must be...

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Bibliographic Details
Published in:Inorganic chemistry 2012-02, Vol.51 (3), p.1213-1215
Main Authors: Ezeh, Vivian C, Harrop, Todd C
Format: Article
Language:English
Subjects:
Arsenic - analysis
Crystallography, X-Ray
Fluorescent Dyes - chemistry
Limit of Detection
Magnetic Resonance Spectroscopy
Models, Molecular
Spectrometry, Fluorescence
Spectrometry, Mass, Electrospray Ionization
Spectrophotometry, Ultraviolet
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Summary:Arsenic contamination is a leading environmental problem. As such, levels of this toxic metalloid must be constantly monitored by reliable and low-cost methodologies. Because the currently accepted upper limit for arsenic in water is 10 ppb, very sensitive and selective detection strategies must be developed. Herein we describe the synthesis and characterization of a fluorescent chemical probe, namely, ArsenoFluor1, which is the first example of a chemosensor for As3+ detection in organic solvents at 298 K. AF1 exhibits a 25-fold fluorescence increase in the presence of As3+ at λem = 496 nm in THF, which is selective for As3+ over other biologically relevant ions (such as Na+, Mg2+, Fe2+, and Zn2+) and displays a sub-ppb detection limit.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic2023715