Nanocatalyst/Nanoplasmon-Enabled Detection of Organic Mercury: A One-Minute Visual Test.
Angew Chem Int Ed Engl
; 58(30): 10285-10289, 2019 07 22.
Article
em En
| MEDLINE
| ID: mdl-31107574
ABSTRACT
We present a fast and sensitive nanosensor that can detect organic mercury, exploiting the combination of the catalytic and plasmonic properties of gold nanoparticles (AuNPs). The method is one-step and completely instrument-free, and has a colorimetric readout clearly detectable by simple visual inspection. The AuNPs catalyze efficient organic mercury reduction to the metallic form (Hg0 ), allowing its nucleation and amalgam formation on particle surface, with consequent aggregation-induced plasmon shift. This leads to very rapid (1â
min) and specific colorimetric detection of mercury species. The achieved limit of detection (20â
ppb) is compliant with current regulatory limits in food.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article