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O-cresol Concentration Online Measurement Based On Near Infrared Spectroscopy Via Partial Least Square Regression
Published on: November 8, 2019
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[Determination of Chloride Salt Solution by NIR Spectroscopy]
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|January 1, 2016
Summary
Near-infrared (NIR) spectroscopy accurately determines chloride salt concentrations in solutions. This method accounts for temperature and ionic effects, crucial for biomedical applications.
Area of Science:
- Analytical Chemistry
- Spectroscopy
- Biomedical Science
Background:
- Accurate determination of chloride salt solutions is vital in biomedicine.
- Near-infrared (NIR) spectroscopy offers a potential method for this analysis.
- Understanding spectral variations due to concentration and temperature is key.
Purpose of the Study:
- To investigate the influence of chloride salt concentration and temperature on NIR spectra.
- To develop a predictive model for chlorine ion concentration using NIR spectroscopy.
- To analyze the impact of ionic properties on spectral characteristics.
Main Methods:
- Near-infrared (NIR) spectral analysis of sodium chloride, potassium chloride, and calcium chloride aqueous solutions.
- Partial Least Squares (PLS) regression for model development.
- Identification of wavelengths minimizing temperature effects (isosbestic points).
Main Results:
- Chloride salt concentration and temperature significantly affect NIR spectra.
- Temperature dominates spectral changes at low concentrations; ionic effects dominate at high concentrations.
- The sequence of hydrogen bond disruption by cations is CaCl2 > NaCl > KCl.
Conclusions:
- A robust PLS model achieved high accuracy (R2 = 99.97%, RMSECV = 4.51, RPD = 62.7) for chlorine ion determination.
- The developed method meets daily biochemical detection accuracy requirements.
- NIR spectroscopy is a viable technique for chloride salt analysis in biomedical contexts.
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