Method for electrochemical analyses

Electrolysis: processes – compositions used therein – and methods – Electrolytic analysis or testing – For ion concentration

Reexamination Certificate

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C205S775000

Reexamination Certificate

active

07056431

ABSTRACT:
Dental amalgam as an electrode material in voltammetry is provided having a very high overpotential to hydrogen. Accordingly, trace analyses can be carried out at potentials sufficiently negative to allow determination of e.g. zinc, cobalt, nickel and iron at trace levels. Such analyses have not previously been possible except by using a mercury or a mercury film electrode. Such determinations are very important for field and online analyses of pollutants in soil and groundwater, and the electrode can be used repeatedly.

REFERENCES:
patent: 4211623 (1980-07-01), Ross, Jr. et al.
patent: 5672257 (1997-09-01), Birch et al.
patent: 59-217154 (1984-12-01), None
patent: 60-73450 (1985-04-01), None
patent: 5-126783 (1993-05-01), None
patent: 111807 (1997-01-01), None
patent: 1002943 (1983-03-01), None
Scandinavian Journal of Dental Research (1986), 94(3), 259-66.
JPO computer translation of Noriyasu et al. (JP 5-126783 A).
page 2:156 of Corrosion:vol. 1 Metal/Environment Reactions ed. Shreir et al., Butterworth-Heinemann 2000.
JPO abstract of Oodo et al. (JP 60-73450 A).
JPO abstract of Tanaka et al. (JP 59-217154 A).
pages 171-172 of the Guide to dental materials and devices, seventh edition American Dental Association.
English language translation of JP 60-73450 A.
English language translation of JP 59-217154 A.
CAPLUS abstract for RO 11807 B3.

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