公开(公告)号：US20240219298A1

公开(公告)日：2024-07-04

申请号：US18532680

申请日：2023-12-07

Applicant: Endress+Hauser Optical Analysis, Inc.

Inventor： Xiang Liu ,  Kuan-Ting Yeh ,  Chih-Husan Chang

IPC: G01N21/31 ,  G01N21/27

CPC classification number: G01N21/3103 ,  G01N21/274

Abstract: A method of spectroscopic analysis includes: collecting a set of calibration spectra for calibration gas samples by scanning a sample range of wavelengths; calculating a first concentration of a target analyte and first concentrations of background components for each calibration spectrum using a multivariant algorithm; modeling an ideal concentration of the target analyte as a function of the first concentrations using a correlative model; collecting a field spectrum for an unknown field gas sample, wherein the field gas sample includes the target analyte and at least some of the background components; calculating a second concentration of the target analyte and second concentrations the background components for the field spectrum using the multivariant algorithm; correcting the second concentration of the target analyte using the correlative model and second concentrations of the background components; and determining a corrected target analyte concentration in the field gas sample based on the corrected second concentration.