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Selective Colorimetric Sensor for Hg 2+ Ions Using a Mixture of Thiourea Derivatives and Gold Nanoparticles Stabilized with Adenosine Triphosphate
Author(s) -
Kim Sudeok,
Lee Na Hee,
Seo Seong Hyeok,
Eom Min Sik,
Ahn Sangdoo,
Han Min Su
Publication year - 2010
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201000483
Subject(s) - thiourea , aqueous solution , chemistry , colloidal gold , nanoparticle , mercury (programming language) , derivative (finance) , analyte , inorganic chemistry , reactivity (psychology) , nuclear chemistry , ion , organic chemistry , materials science , nanotechnology , chromatography , medicine , alternative medicine , pathology , computer science , financial economics , economics , programming language
The mercury prize : A highly selective and sensitive unmodified gold‐nanoparticle (AuNP)‐based colorimetric sensor for Hg 2+ ions in aqueous media uses the Hg 2+ ‐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 .