An electrochemical method for the determination of the metal ions Fe3+, Cu2+ and Hg2+ has been developed. It is based on organic chelators changing their electrochemical behaviour as a function of metal ion concentration in solution. Amperometric measurements of the metal ions are performed by cyclic voltammetry using a glassy carbon or a modified carbon paste as working electrodes. Fe3+ is determined in the range 6-60 ppb using two chelators synthesized by the British Technology Group (UK Patent Nos. GB 2118176B and GB 2136807B), Cu2+ is determined in the range 0.35-4 ppm with bis-cyclohexanone oxalyldihydrazone and Hg2+ is determined in the range 20-200 ppm using glyoxal dithiosemicarbazone.[...]
ELECTROCHEMICAL SENSORS FOR THE DETERMINATION OF METAL-IONS
COMPAGNONE, DARIO;
1992-01-01
Abstract
An electrochemical method for the determination of the metal ions Fe3+, Cu2+ and Hg2+ has been developed. It is based on organic chelators changing their electrochemical behaviour as a function of metal ion concentration in solution. Amperometric measurements of the metal ions are performed by cyclic voltammetry using a glassy carbon or a modified carbon paste as working electrodes. Fe3+ is determined in the range 6-60 ppb using two chelators synthesized by the British Technology Group (UK Patent Nos. GB 2118176B and GB 2136807B), Cu2+ is determined in the range 0.35-4 ppm with bis-cyclohexanone oxalyldihydrazone and Hg2+ is determined in the range 20-200 ppm using glyoxal dithiosemicarbazone.[...]I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
