A simple and label-free sensor for mercury(II) detection in aqueous solution by malachite green based on a resonance scattering spectral assay

A simple and label-free sensor for mercury(II) detection in aqueous solution by malachite green based on a resonance scattering spectral assay

Mercury ions (Hg(2+)) can specifically interact with the thymine-rich Hg(2+) aptamer and malachite green (MG) to form the Hg(2+) aptamer-MG-Hg(2+) complex, inducing the increase of resonance scattering (RS) intensity at 611 nm, which enables the label-free detection of Hg(2+) in aqueous solution wit...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2011-01, Vol.47 (21), p.6027-6029
Hauptverfasser: Wu, Yuangen, Zhan, Shenshan, Xu, Lurong, Shi, Weiwei, Xi, Tao, Zhan, Xuejia, Zhou, Pei
Format: Artikel
Sprache:eng
Schlagworte:
Aptamers, Nucleotide - chemistry
Aqueous solutions
Assaying
Malachite green
Mercury
Mercury - analysis
Resonance scattering
Rosaniline Dyes - chemistry
Selectivity
Sensors
Spectra
Spectrometry, Fluorescence - methods
Thymine - chemistry
Water - chemistry
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Zusammenfassung:Mercury ions (Hg(2+)) can specifically interact with the thymine-rich Hg(2+) aptamer and malachite green (MG) to form the Hg(2+) aptamer-MG-Hg(2+) complex, inducing the increase of resonance scattering (RS) intensity at 611 nm, which enables the label-free detection of Hg(2+) in aqueous solution with high selectivity and a detection limit of 1.7 nM.
ISSN:1359-7345
1364-548X
DOI:10.1039/c1cc10563a