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US4166009A
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Method for detecting elements
Assignee: FRAY DEREK JOHN 157 SHELFORD ROAD TRUMPINGTON CAMBRIDGE CB2 2ND
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Filing: 1977-12-13
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Granted: 1979-08-28
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Expires: 1997-12-13
Abstract
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 β-alumina containing said element or a solid compound of said element separated from the substance by said electrolyte.
Inventors
- 👤 Derek J. Fray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:48
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/411; G01N27/4112; G01N27/4114
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
143 words
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 β-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° C. and which is selected from the group consisting of: two phase β-alumina, a mixture of α-alumina and β-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.
Claim 2
Independent Claim
143 words
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 β-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° C. and which is selected from the group consisting of: two phase β-alumina, a mixture of α-alumina and β-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.
Claim 3
Dependent Claim
30 words
The method as claimed in claim 1 wherein said reference material comprises a β-alumina selected from the group consisting of lithium, sodium, potassium, rubidium, copper, silver, thallium, iridium and gallium.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-27 | 1983-02-26 | 1983-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-27 | 1987-02-26 | 1987-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-27 | 1991-02-26 | 1991-08-28 | $7700.00 | Window Closed / Lapsed |