Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/196775
Type: Artigo de periódico
Title: Use Of Near Infrared Emission Spectroscopy In The Study Of Supporting Materials And Stationary Phases For Liquid Chromatography.
Author: Gonzaga, Fabiano Barbieri
Jardim, Isabel C S F
Pasquini, Celio
Abstract: Near infrared emission spectroscopy (NIRES) has been investigated in the study of different materials employed in liquid chromatography. The samples were heated in a nitrogen atmosphere and the emission spectra were obtained using a lab-made NIRES instrument. Through principal component analysis (PCA) using the raw emission spectra, it was possible to distinguish different materials according to their physical and/or chemical characteristics. Linear relationships between emissivity spectra and the contents of the coating material or the specific surface areas was observed for stationary phases or bare silicas, respectively. Furthermore, the thermal stability of stationary phases could be followed in real time.
Subject: Algorithms
Chromatography, Liquid
Principal Component Analysis
Reproducibility Of Results
Silicon Dioxide
Spectroscopy, Near-infrared
Temperature
Thermodynamics
Rights: fechado
Identifier DOI: 10.1016/j.chroma.2006.04.063
Address: http://www.ncbi.nlm.nih.gov/pubmed/16712858
Date Issue: 2006
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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