Device for the spectrochemical determination of the concentration of an element in a sample
Abstract
Abstract THE INVENTION REPRESENTS AN IMPROVEMENT IN DEVICES FOR THE SPECTROCHEMICAL DETERMINATION OF THE CONCENTRATION OF PARTICULAR ELEMENT IN A SAMPLE. A SINGLE RADIATION SOURCE IS CAUSED, BY A FREQUENCY-SHIFTING TECHNIQUE, TO EMIT A TIME-ALTERNATING SUCCESSION OF TWO RADIATIONS, ONE OF WHICH IS AT A SPECIFIC FREQUENCY THAT IS CHARACTERISTIC OF THE PARTICULAR ELEMENT, AND THE OTHER OF WHICH REPRESENTS A SLIGHT SPECTRAL SHIFT FROM THE FIRST RADIATION. THE RADIATIONS ARE PASSED THROUGH THE SAMPLE IN TIME ALTERNATION, AND A SYNCHRONOUSLY COMMUTATED DETECTOR DIFFERENTIALLY EVALUATES THE RELATION BETWEEN TWO TRANSMISSSIONS, ATTRIBUTABLE TO THE RESPECTIVE RADIATIONS. WHEN THE AMPLIFIER CHARACTERISTIC IS LOGARITHMIC, THE DIFFERENTIAL EVALUATION PROVIDES THE QUOTIENT OF THE TWO DETECTED TRANSMISSIONS.
Inventors
- 👤 Hans Prugger
- 👤 Reimund Torge
Bibliographic Details
Claims Analysis
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| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |