PCA and PLS Analysis of Lanthanides Using Absorbance and Single-Beam Visible Spectra.

ABSTRACT: During process monitoring applications, referenced optical spectroscopy, such as absorbance spectroscopy, can suffer from environmental and instrumental fluctuations that alter the intensity of irradiance reaching the spectrometer's detector at each detected frequency. Temperature, vibration, light source aging, instrument damage, detector aging, detector registry shifts, sampling cell degradation, and similar perturbations create situations in which a previously collected reference spectrum may no longer be valid for the current state of the system. This can lead to the calculation of poor-quality absorbance spectra that are unsuitable for qualitative or quantitative analysis based on prior calibration models. The use of single-beam spectra in the creation of multivariate calibration mode

SUBMITTER: Lackey HE 

PROVIDER: S-EPMC11307987 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature