Construction of a new Hg(2+)-selective liquid-state electrode.
The construction and basic characteristics of a new liquid-state Hg(2+)-selective membrane electrode are discussed. The membrane consists of the PAN chelate of Hg(II), dissolved in CHCl(3). The linear response range of the electrode is 10(-1) -10(-5)M Hg(2+) with a slope of 28.5 mV/decade of concentration. The response time of the electrode in dilute solutions is less than 3 min, and in concentrated solutions it is only a few sec. The electrode has been used in precipitation or complexation titrations in which Hg(2+) is involved (e.g., in the determination of some organic compounds in drug synthesis).
Coşofreţ
V V
VV
Institute of Chemical and Pharmaceutical Research, Bucharest, Sos. Vitan 112, 74351 Bucharest, Romania.
Zugrăvescu
P G
PG
Baiulescu
G E
GE