A dansyl based fluorescence chemosensor for Hg(2+) and its application in the complicated environment samples

Spectrochim Acta A Mol Biomol Spectrosc. 2015 Sep 5:148:348-54. doi: 10.1016/j.saa.2015.03.126. Epub 2015 Apr 18.

Abstract

We have developed a novel fluorescent chemosensor (DAM) based on dansyl and morpholine units for the detection of mercury ion with excellent selectivity and sensitivity. In the presence of Hg(2+) in a mixture solution of HEPES buffer (pH 7.5, 20 mM) and MeCN (2/8, v/v) at room temperature, the fluorescence of DAM was almost completely quenched from green to colorless with fast response time. Moreover, DAM also showed its excellent anti-interference capability even in the presence of large amount of interfering ions. It is worth noting that DAM could be used to detect Hg(2+) specifically in the Yellow River samples, which significantly implied the potential applications of DAM in the complicated environment samples.

Keywords: Complexation; Dansyl; Environment; Fluorescence; Hg(2+); MeCN–H(2)O.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Dansyl Compounds / chemistry*
  • Environmental Monitoring / methods
  • Fluorescent Dyes / chemistry*
  • Limit of Detection
  • Mercury / analysis*
  • Models, Molecular
  • Morpholines / chemistry*
  • Rivers / chemistry
  • Spectrometry, Fluorescence / methods*
  • Water Pollutants, Chemical / analysis*

Substances

  • Dansyl Compounds
  • Fluorescent Dyes
  • Morpholines
  • Water Pollutants, Chemical
  • morpholine
  • Mercury