Method for determining element contents using wave dispersive and energy dispersive x-ray fluorescence analysis
AssigneeOutokumpu Oyj
InventorChristian von Alfthan
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Abstract
The invention relates to a method for defining element contents contained by solid, liquid or slurry-like materials by means of an X-ray fluorescence method in an online analysis. According to the invention a combination of both the energy dispersive (3) and wave dispersive (2) X-ray fluorescence methods are applied in the method, so that by means of the energy dispersive method (3), there are measured such diffraction lines that are located essentially far from each other, whereas by means of the wave dispersive method (2), there are measured such diffraction lines that are located essentially near to each other as well as such diffraction lines where a high resolution and resulting accuracy and sensitivity are required.
Claims8
A method of determining presence of elements in a solid, liquid or slurry-like material in on-line analysis by an X-ray fluorescence method, comprising:
- employing the energy dispersive method to measure diffraction lines that are widely spaced from each other and employing the wave dispersive method to measure diffraction lines that are relatively close to each other and to measure diffraction lines where high resolution and resulting accuracy and sensitivity are required, and
- reducing the radiation intensity received by the energy dispersive detector in order to achieve an advantageous pulse treatment rate by means of a field stop.
Dependencies are inferred from the claim text.