Resonance scattering detection of trace melamine using aptamer-modified nanosilver probe as catalyst without separation of its aggregations

Resonance scattering detection of trace melamine using aptamer-modified nanosilver probe as catalyst without separation of its aggregations

Nanosilver was modified by aptamer (ssDNA) to obtain a resonance scattering (RS) probe (AgssDNA) for melamine (MA). Based on the catalytic effect of the probe on the Fehling particle reaction, a nanocatalytic RS assay is proposed for the determination of 0.02-1.06 μg L(-1) MA.

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2011-01, Vol.47 (11), p.3162-3164
Hauptverfasser: Jiang, Zhiliang, Zhou, Lianping, Liang, Aihui
Format: Artikel
Sprache:eng
Schlagworte:
Agglomeration
Aptamers, Nucleotide - chemistry
Catalysis
Catalysts
Melamine
Metal Nanoparticles - chemistry
Nanocomposites
Nanomaterials
Nanostructure
Resonance scattering
Silver - chemistry
Spectrophotometry, Ultraviolet - methods
Triazines - analysis
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Zusammenfassung:Nanosilver was modified by aptamer (ssDNA) to obtain a resonance scattering (RS) probe (AgssDNA) for melamine (MA). Based on the catalytic effect of the probe on the Fehling particle reaction, a nanocatalytic RS assay is proposed for the determination of 0.02-1.06 μg L(-1) MA.
ISSN:1359-7345
1364-548X
DOI:10.1039/c0cc05234e