Atomic Spectroscopy

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Unsolved Problems in Spectroscopy - Part 2
Specificity and the Net Analyte Signal in Full-Spectrum Analysis

July 21st 2025

This tutorial addresses the critical issue of analyte specificity in multivariate spectroscopy using the concept of Net Analyte Signal (NAS). NAS allows chemometricians to isolate the portion of the signal that is unique to the analyte of interest, thereby enhancing model interpretability and robustness in the presence of interfering species. While this tutorial introduces the foundational concepts for beginners, it also includes selected advanced topics to bridge toward expert-level applications and future research. The tutorial covers the mathematical foundation of NAS, its application in regression models like partial least squares (PLS), and emerging methods to optimize specificity and variable selection. Applications in pharmaceuticals, clinical diagnostics, and industrial process control are also discussed.

Closeup of shiny nickel mineral ore in rough round shape with silver color, capturing the texture and shine with blurred background, blank space on the side for caption or design elements. Generated with AI. | Image Credit: © Your Hand Please - stock.adobe.com
New Study Expands Nickel Autoionization Spectra to Advance Laser Isotope Separation Technologies

July 17th 2025

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AI-Powered Fusion Model Improves Detection of Microplastics in the Atmosphere

July 17th 2025

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How Analytical Chemists Are Navigating DOGE-Driven Funding Cuts

July 14th 2025

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Screening of Geological Rocks for Metal Composition Using Three Different Sample Preparation Methods for Atomic Spectroscopy

July 4th 2025

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