Patent ID: 8119415
Filing Date: 2012-02-21
Classification: G01N

Abstract:
1. An X-ray fluorescence method for a composition analysis of a sample containing at least two elements, comprising: a first step of placing a first sample of known concentrations of two or more known elements in a X-ray fluorescence spectrometer; a second step of measuring an intensity I1, I2 . . . In of each element of the first sample by relating known concentrations C1, C2 . . . Cn for the elements of the first sample to measured intensities I1, I2 . . . In to calculate a fictive intensity for a 100%—pure element for each of the elements of the first sample; a third step of calculating calibration constants K1, K2. . . Kn for each of the elements as a relationship between the measured intensity I1, I2 . . . In and the calculated fictive intensity of respective 100%-pure elements; a fourth step of placing a second sample of unknown concentrations of said elements in the X-ray fluorescence spectrometer and reading-off an intensity of the different elements; and a fifth step of calculating a concentration of respective elements in the second sample as the measured intensity multiplied by respective calibration constants for the elements present in the second sample.