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A highly sensitive and selective detection of Hg(II) in 100% aqueous solution with fluorescent labeled dimerized Cys residues.

Authors
  • Joshi, Bishnu Prasad
  • Lohani, Chuda Raj
  • Lee, Keun-Hyeung
Type
Published Article
Journal
Organic & Biomolecular Chemistry
Publisher
The Royal Society of Chemistry
Publication Date
Jul 21, 2010
Volume
8
Issue
14
Pages
3220–3226
Identifiers
DOI: 10.1039/b925744f
PMID: 20485845
Source
Medline
License
Unknown

Abstract

A simple design of a ratiometric fluorescent sensor for detecting Hg(II) ion in 100% aqueous solution was demonstrated, based on the structure of dimerized Cys residues with two dansyl fluorophores. The sensor highly sensitively and selectively detected mercury ion (K(d) = 41 nM) in 100% aqueous solution via a turn-on and ratiometric response. The sensor showed no interferences of other metal ions and satisfied for monitoring the maximum allowable level (2 ppb) of mercury ion in drinking water demanded by EPA via a turn-on response.

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