Abstract: Chapter 13 Diffuse Reflectance Spectroscopy José Torrent, José Torrent University of Córdoba, SpainSearch for more papers by this authorVidal Barrón, Vidal Barrón University of Córdoba, SpainSearch for more papers by this author José Torrent, José Torrent University of Córdoba, SpainSearch for more papers by this authorVidal Barrón, Vidal Barrón University of Córdoba, SpainSearch for more papers by this author Book Editor(s):April L. Ulery, April L. UlerySearch for more papers by this authorL. Richard Drees, L. Richard DreesSearch for more papers by this author First published: 15 April 2008 https://doi.org/10.2136/sssabookser5.5.c13Citations: 3Book Series:SSSA Book Series AboutPDFPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShareShare a linkShare onFacebookTwitterLinked InRedditWechat Summary This chapter describes available laboratory methods for recording diffuse reflectance spectra for soil materials and ways to handle the information to identify and characterize soil minerals. It considers the visible and narrow vicinal ultraviolet (UV) and infrared (IR) regions of the spectrum. The chapter first provides a brief introduction to the theoretical principles of diffuse reflection. Diffuse reflectance measurements are usually made by using a UV-visible spectrophotometer equipped with a diffuse reflectance accessory (integrating sphere) capable of collecting the reflected flux. The Kubelka–Munk and other forms of diffusive reflectance are strictly mathematical artifices with no direct physical meaning. In practice, however, reflectance measurements are performed under specific geometric conditions. Diffuse reflectance spectra are significantly sensitive to the manner in which the soil or mineral mixture sample is prepared. Particle size is the factor most strongly affecting reflectance, as shown by the occasionally dramatic changes in soil color upon grinding. Citing Literature Methods of Soil Analysis Part 5—Mineralogical Methods, 5.5 RelatedInformation
Publication Year: 2015
Publication Date: 2015-10-26
Language: en
Type: book-chapter
Indexed In: ['crossref']
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Cited By Count: 126
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