Sub-ppt detection limits for copper ions with Gly-Gly-His modified electrodes

Chem Commun (Camb). 2001 Oct 7:(19):1982-3. doi: 10.1039/b106730n.

Abstract

An electrochemical metal ion sensor has been developed with a detection limit of less than 0.2 ppt by the covalent attachment of the tripeptide Gly-Gly-His as a recognition element to a 3-mercaptopropionic acid modified gold electrode.

MeSH terms

  • 3-Mercaptopropionic Acid / chemistry
  • Biosensing Techniques
  • Copper / chemistry*
  • Copper / metabolism
  • Electrochemistry
  • Glycine / chemistry*
  • Glycine / metabolism
  • Gold / chemistry
  • Histidine / chemistry*
  • Histidine / metabolism
  • Ion-Selective Electrodes
  • Oxidation-Reduction
  • Potentiometry

Substances

  • Histidine
  • Gold
  • Copper
  • 3-Mercaptopropionic Acid
  • Glycine