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US 4,166,009 AGranted
Method for detecting elements
AssigneeNational Research Development Corporation
InventorDerek J. Fray
Life of this patent
Estimating the term…
Abstract
A method for the detection or determination of an element in a substance comprising that element by monitoring the e.m.f. generated between the substance and a reference material, in which the reference material is a solid electrolyte comprising a .beta.-alumina containing said element or a solid compound of said element separated from the substance by said electrolyte.
Claims2
A method for the detection or determination of an element in a sample containing said element, including the steps of:
- (1) providing a solid electrolyte pellet comprising .beta.-alumina containing the element to be detected or determined and a refractory material tube containing a reference electrode and a solid powder reference material of a compound of said element to be detected or determined which is solid at 750.degree. C. and which is selected from the group consisting of:
- two phase .beta.-alumina, a mixture of .alpha.-alumina and .beta.-alumina, a molybdate and a vanadate, said pellet sealing one end of said tube and contacting said reference material at one surface thereof;
- (2) contacting a sample containing said element to be detected or determined with another electrode and the surface of the pellet opposite said first-mentioned surface;
- and
- (3) monitoring the e.m.f. generated between the two electrodes.
2 more elements
Dependencies are inferred from the claim text.