π Chemically Transparent Variable Selection in NIR Spectroscopy
π§ͺ 1. Introduction to NIR Spectroscopy Near-Infrared (NIR) spectroscopy π is a rapid, non-destructive analytical technique widely used in pharmaceutical sciences. It captures overtones and combination vibrations of molecular bonds, enabling the identification of compounds like paracetamol π within complex formulations. Its speed and minimal sample preparation make it a powerful tool for real-time quality control. ⚙️ 2. Chemically Transparent Variable Selection Chemically transparent variable selection π focuses on selecting only those spectral regions that directly correspond to meaningful chemical information. Unlike blind statistical filtering, this method ensures interpretability and enhances trust in predictive models. It reduces noise π« and eliminates irrelevant wavelengths, leading to more robust and chemically meaningful analysis. π 3. PLS Regression in Quantitative Analysis Partial Least Squares (PLS) regression π is a chemometric technique that correlates spectral...