Mercurous Sulfate Reference Electrode Based on Solid Silver Amalgam

Autoři

  • B. Yosypchuk J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague
  • L. Novotny J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague

Abstrakt

A reference saturated mercurous sulfate electrode based on the non-toxic solid silver amalgam (SMSE-AgSA) as a substitute of liquid mercury was described. Long-term as well as short-term tests confirmed the stability of the SMSE-AgSA potential for a period of several months (ESMSE-AgSA = +395.8 ± 0.06 mV vs. SCE; SD = 0.54 mV; N = 64). The voltammograms of lead and cadmium recorded against SMSE-AgSA or SCE were similar even though shifted along the E-axis. None of the electrodes was polarized to a significant extent in the potential range from -2000 mV to +2000 mV and under usual voltammetric currents. On the basis of the obtained results, SMSE-AgSA could be considered an equivalent substitute to the well-known mercurous sulfate electrode.

Publikováno

15.12.2003

Jak citovat

Yosypchuk, B., & Novotny, L. (2003). Mercurous Sulfate Reference Electrode Based on Solid Silver Amalgam. Chemické Listy, 97(11). Získáno z http://ww.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2198

Číslo

Sekce

Články