Selective Colorimetric Sensor for Hg 2+ Ions Using a Mixture of Thiourea Derivatives and Gold Nanoparticles Stabilized with Adenosine Triphosphate
2010; Wiley; Volume: 5; Issue: 12 Linguagem: Inglês
10.1002/asia.201000483
ISSN1861-4728
AutoresSudeok Kim, Na Hee Lee, Seong Hyeok Seo, Min Sik Eom, Sangdoo Ahn, Min Su Han,
Tópico(s)Electrochemical Analysis and Applications
ResumoThe mercury prize: A highly selective and sensitive unmodified gold-nanoparticle (AuNP)-based colorimetric sensor for Hg2+ ions in aqueous media uses the Hg2+-promoted desulfurization reaction of a thiourea derivative and the reactivity of a thiourea derivative to gold nanoparticles. This sensor also allows a quantitative assay of the analyte in a neutral aqueous solution, down to a concentration of 10−7 M.
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