The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 1988
Filed:
May. 13, 1987
Kari M Saloheimo, Espoo, FI;
Seppo V Rantapuska, Espoo, FI;
Outokumpu Oy, Helsinki, FI;
Abstract
A stripping analysis method comprises a preelectrolysis step during which liquid to be analyzed is introduced into a measurement cell at a pulsating rate, a working electrode is vibrated at an ultrasonic frequency, and the voltage potential between the working electrode and a reference electrode is adjusted to a level which allows the substances to be determined to be deposited on the working electrode. After the preelectrolysis step is a stripping step during which the voltage potential between the working electrode and the reference electrode is scanned through the potential range where the substances to be determined are dissolved back to the liquid and current is measured while the liquid in the measurement cell remains essentially undisturbed. The method also comprises an elimination step during which the voltage potential between the working electrode and the reference electrode is adjusted to a level at which the working electrode is regenerated. The products of the measurement step are removed from the cell by vibrating the working electrode at an ultrasonic frequency and thereby disturbing the liquid in the cell, and introducing liquid into the cell at a non-pulsating rate and thereby displacing liquid from the cell.