Controlled-growth mercury drop electrode

Details Controlled-growth mercury drop electrode Controlled-growth mercury drop electrode

1988-03-08

1989-07-11

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

25112915, G01N 2734

Patent

active

048469556

ABSTRACT:
A mercury drop electrode for use in electrochemical experiments. The invention includes a reservoir for liquid mercury, a mercury drop capillary having upper and lower open ends and also having a chemically inert lower capillary tube portion and an electrically conductive upper capillary tube portion supported by the lower portion and in contact with the mercury in the reservoir, valve means including a valve stem having a seal at its lower end and a ferromagnetic portion at its upper end, a valve seat comprising the upper end of the upper portion of the capillary which acts in concert with the valve seal to close the valve, and actuating means operatively arranged to lift the valve seal form the seat to allow mercury to enter the capillary from the reservoir and to lower the seal to the seat to prevent mercury from entering the capillary from the reservoir.

REFERENCES:
patent: 4548679 (1985-10-01), Guidelli et al.
patent: 4756331 (1988-07-01), Stegmaier
James A. Plambeck, "Electroanalytical Chemistry", pp. 27-28, (1982).
W. Peterson, "Static Mercury Drop Electrode", EG&G Application Note T-2.
P. Sturrock and W. Williams, "Modified Static Mercury Drop Electrode", Anal. Chem. 2629 (1982).
Z. Kowalski, K. Wong, R. Osteryoung & J. Osteryoung, "Controlled-Growth Mercury Drop Electrode", Analytical Chemistry, 1987, 59, 2216 (9/1/87).
K Wong, Z. Kowalski, R. Osteryoung and J. Osteryoung, "A new Controlled-Growth Mercury Drop Electrode", Abstract No. 304, The Pittsburgh Conference & Exposition on Analytical Chemistry and Applied Spectroscopy (3/9-13/87.
Z. Kowalski, "Application of a Controlled-Growth Mercury Drop Electrode for Polarography", Analyst, vol. 112 (4/1/87).

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