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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 12 — Dec. 19, 2012

Composition Analysis of Scattering Liquids Based on Spatially Offset Visible-Near-Infrared Spectroscopy

Chan Xiong, Gang Li, and Ling Lin

Applied Spectroscopy, Vol. 66, Issue 11, pp. 1347-1352 (2012)


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Abstract

Spatially offset visible-near-infrared (VIS-NIR) spectroscopy was used to analyze of chemical compositions of the scattering liquids in the visible and near-infrared region from 530 to 930 nm. An experimental setup was designed based on a supercontinuum white-light laser source, an electrically controlled translation stage, and a high-performance spectrometer. The spatially offset spectra of the scattering liquids (composed of diluted Intralipid® 20% in distilled water) were measured at 24 sequential positions in the radial distribution from the incident light. A partial least squares regression method was applied to obtain the Intralipid® concentration from the spatially offset spectra. The results showed that the prediction accuracy of the Intralipid® concentration obtained from the spectra collected at multiple sample points was better than that obtained from the spectra collected at a single sample point. The coefficient of determination in the prediction set is 0.9835 at the optimized number of sample points.

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Vol. 7, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Chan Xiong, Gang Li, and Ling Lin, "Composition Analysis of Scattering Liquids Based on Spatially Offset Visible-Near-Infrared Spectroscopy," Appl. Spectrosc. 66, 1347-1352 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=as-66-11-1347

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