Infrared spectroscopy is now a standard technology for process control in a large number of industries. By measuring infrared spectra from complex samples such as soil, grains, food processing mixtures etc., and comparing these spectra against appropriate spectral libraries, detailed compositional information can be obtained. Examples of the measurable quantities include, levels of protein, starch, oil and moisture content of grains, and total carbon and mineralisable nitrogen in soils.

© 2014 Optical Society of America

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