Patent ID: 11898973
Assignee: HITACHI HIGH-TECH ANALYTICAL SCIENCE FINLAND OY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 19:
20. The method according to claim 19, further comprising carrying out an empirical calibration procedure before applying the XRF analyzer instrument for the analysis of elemental composition in order to establish said calibration, wherein the empirical calibration comprises the following:
using the arrangement of the measurement chamber, the radiation source and the radiation detector with the air inside the measurement chamber at the reference air density to obtain a respective measurement signal for each of a plurality of predefined reference samples,
determining a respective measured energy spectra for each of the plurality of predefined reference samples based on the measurement signal obtained therefor, and
deriving the calibration model based on the respective measured energy spectra determined for the plurality of predefined reference samples and respective predefined concentrations of one or more elements in the plurality of predefined reference samples.