US 12,140,478 B2
Method and system for element identification via optical emission spectroscopy
Daniel Finn McCarthy, Noble Park (AU); and Mark Andrew Woods, Emerald (AU)
Assigned to Agilent Technologies, Inc., Santa Clara, CA (US)
Appl. No. 17/766,184
Filed by Agilent Technologies, Inc., Santa Clara, CA (US)
PCT Filed Dec. 23, 2019, PCT No. PCT/IB2019/061259
§ 371(c)(1), (2) Date Apr. 1, 2022,
PCT Pub. No. WO2021/079184, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 2019903971 (AU), filed on Oct. 22, 2019; and application No. 2019904107 (AU), filed on Oct. 31, 2019.
Prior Publication US 2024/0053201 A1, Feb. 15, 2024
Int. Cl. G01J 3/443 (2006.01); G01N 21/73 (2006.01); G01J 3/28 (2006.01)
CPC G01J 3/443 (2013.01) [G01N 21/73 (2013.01); G01J 2003/2843 (2013.01); G01J 2003/2859 (2013.01); G01J 2003/2866 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A computer-implemented method of automatically identifying the presence of one or more elements in a sample via optical emission spectroscopy, the method including the steps of
obtaining sample spectrum data from the sample,
obtaining a list of one or more predetermined emission wavelengths for each element in the periodic table quantifiable by optical emission spectroscopy, each predetermined emission wavelength being associated with a list of one or more potential interference emission wavelengths,
determining a list of one or more analyte wavelengths corresponding to spectral peaks in the sample spectrum data based on the list of emission wavelengths,
for each analyte wavelength, determining whether the corresponding spectral peak has a likelihood of being affected by an interference emission wavelength causing spectral interference based on the list of one or more potential interference emission wavelengths corresponding to the analyte wavelength,
determining a revised list of one or more analyte wavelengths by removing from the list of analyte wavelengths, analyte wavelengths corresponding to spectral peaks having a likelihood of being affected by an interference emission wavelength, and
determining a level of confidence that one or more elements are present in the sample based on a set of criteria applied to the revised list of analyte wavelengths.