Method of and device for the quantitative detection of material in a sample
AssigneeForschungszentrum Julich GmbH
InventorsHelmut Hackfort, Georg Hinzen
Life of this patent
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Abstract
Method of quantitatively detecting material in a sample, whereby the material is in the form of submicrometric particles covered by a photoemitting substance, and a device for practicing the method. The material in the sample is heated to a photoemitting state and subjected while in that state to photoemission measurement. The proportion of material in the sample is determined from the signal obtained from that measurement by comparison with empirical data obtained from a reference sample containing a previously detected quantity of the material or by comparison with data obtained for the material by calibration.
Claims18
Method of quantitatively detecting material in a sample, wherein the material is in the form of submicrometric particles covered by a photoemitting substance, comprising
- exciting the material in the sample to a photoemitting state comprising heating the sample;
- subjecting the material, while in the photoemitting state, to photoemission measurement, and
- determining the proportion of the material in the sample from the signal obtained from the photoemission measurement in conjunction with empirical data obtained from a reference sample containing a previously detected quantity of the material or by using data obtained for the material by calibration.
Device for the quantitative detection of material in a sample, wherein the material is in the form of submicrometric particles covered by a photo-emitting substance, comprising
- a photo-detecting sensor that produces an electric empirical signal in response to photoemissions,
- a heat-treating unit upstream of the sensor, said unit including a heater for heating the material in the sample to a photoemitting state to produce photoemissions,
- an electronic unit downstream of the sensor that determines the proportion of the material in the sample from the electrical empirical signal in conjunction with empirical data obtained from a reference sample containing a previously detected quantity of the material or by using data obtained for the material by calibration, and displays the resulting proportion or emits resulting proportion in the form of a digital or electric value.
Dependencies are inferred from the claim text.