Reconstruction of frequency registration deviations for quantitative spectroscopy

Abstract

Frequency registration deviations occurring during a scan of a frequency or wavelength range by a spectroscopic analysis system can be corrected using passive and / or active approaches. A passive approach can include determining and applying mathematical conversions to a recorded field spectrum. An active approach can include modifying one or more operating parameters of the spectroscopic analysissystem to reduce frequency registration deviation.

Description

[0001] Cross References to Related Applications [0002] This application is related to and claims priority from U.S. Provisional Application No. 62 / 200,581, filed August 3, 2015, and U.S. Patent Application No. 14 / 817,119, filed August 3, 2016, the contents of which are hereby incorporated by reference in their entirety into this article. technical field [0003] The present disclosure relates generally to spectroscopic analysis, and in particular to methods for achieving and maintaining accurate and reproducible frequency and / or wavelength registration of spectroscopic data from spectroscopic analyzers. Background technique [0004] One or more of degradation, drift, or non-reproducibility of hardware of the spectroscopic analysis system can affect frequency and wavelength registration observed in spectral scans obtained using the spectroscopic analysis system relative to when the spectroscopic analysis system is in calibration. Consequently, the accuracy and reproducibil...

AI Technical Summary

Problems solved by technology

As in DAS, changes in the spectral scanning behavior of the light source can lead to distortions in the WMS line shape and variations in the peak and / or peak-to-trough heights of the target analyte WMS peaks, which can lead to inaccurate concentration measurements with respect to the spectroscopic analysis system The calibration status of the

Images