Direct detection of sulfide ions [S2-] in aqueous media based on fluorescence quenching of functionalized CdS QDs at trace levels: analytical applications to environmental analysis

Analyst. 2013 Mar 7;138(5):1329-33. doi: 10.1039/c3an36825d.

Abstract

A novel, simple but highly selective fluorescent probe is developed for the direct detection of sulfide ions [S(2-)] based on the fluorescence quenching of the functionalized CdS QDs in aqueous solution at trace levels and successfully applied for quantitation of S(2-) from water samples in a complex matrix exclusive of pretreatment by standard addition method.

Publication types

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

MeSH terms

  • Anions / analysis
  • Cadmium Compounds / chemistry*
  • Environmental Monitoring / economics
  • Environmental Monitoring / methods
  • Fluorescent Dyes / chemistry*
  • Quantum Dots*
  • Sensitivity and Specificity
  • Spectrometry, Fluorescence / economics
  • Spectrometry, Fluorescence / methods
  • Sulfides / analysis*
  • Sulfides / chemistry
  • Water / analysis*
  • Water Pollutants, Chemical / analysis*

Substances

  • Anions
  • Cadmium Compounds
  • Fluorescent Dyes
  • Sulfides
  • Water Pollutants, Chemical
  • cadmium sulfide
  • Water