G - Physics – 01 – N
Patent
G - Physics
01
N
324/23
G01N 27/42 (2006.01)
Patent
CA 1263441
ABSTRACT OF THE DISCLOSURE A method and apparatus for determining electrochemically active components in a process stream. The method comprises the steps of providing a sample in which the components are contained, and depositing the components onto a working electrode, altering the environment of the working electrode so that it is immersed in a supporting electrolyte by effecting a matrix exchange and stripping the deposited electrochemically active components from the working electrode into the supporting electro- lyte. The method and apparatus utilize a measurement cell which comprises a vessel for containing the supporting electrolyte and a mercury drop electrode. A flow injector is used to inject a flow of a sample electrolyte which contains the electrochemically active components into the vessel so that the sample electrolyte surrounds the mercury drop electrode and then sinks away from the mercury drop electrode to the bottom of the vessel where it is removed via an outlet to thereby leave the mercury electrode immersed in the supporting electrolyte. The deposited impurities are stripped from the supporting electrolyte using variable time domain transient electrochemical stripping volt ammetry. The sequence of steps including the deposition of the impurities from an injected flow of electrolyte sample are repeated under microprocessor control.
542876
Bond Alan M.
Knight Roger W.
Newman Oliver M.g.
Bond Alan M.
Electrolytic Zinc Company Of Australasia Limited
Knight Roger W.
Newman Oliver M.g.
Swabey Ogilvy Renault
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