Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1993-04-27
1995-02-14
Tung, T.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
20415314, 2041532, 2041532, 204412, 204434, G01N 2726
Patent
active
053892151
ABSTRACT:
In an electrochemical detection method using an apparatus including a first vessel and a second vessel, a reference electrolytic solution in the second vessel, first and second closely spaced working electrodes immersed in a sample solution for measurement in the first vessel, a stripping electrode immersed in the reference electrolytic solution, and an ionic conductor arranged between the first vessel and the second vessel, the reference electrolytic solution contains an electrolyte which can be deposited and dissolved by an electrochemical reaction by applying a potential to the stripping electrode. In a first stage, a pre-electrolysis potential is applied to the first working electrode with the stripping electrode being connected to the second working electrode to deposit the electrolyte in the reference electrolytic solution on the stripping electrode. In a second stage, after the second working electrode is disconnected from the stripping electrode, the potential of the stripping electrode is swept to measure a current generated when the electrolyte deposited on the stripping electrode in the first stage is dissolved from the stripping electrode, and the concentration of an analyte exiting in the sample solution for measurement is determined from the measured stripping current.
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Horiuchi Tsutomu
Morita Masao
Niwa Osamu
Tabei Hisao
Nippon Telegraph and Telephone Corporation
Tung T.
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