Gas inside packed food is monitored by a technique named GASMAS, GAs in Scattering Media Absorption Spectroscopy. The sharp gas absorption line in contrast to the broadband bulk absorption enables gas detection in situ.
© 2008 The Optical Society
M. Lewender, Z. Guan, L. Persson, A. Olsson, and S. Svanberg, "Gas Analysis in Food Packages Using Tunable Diode Laser Spectroscopy," in Asia Optical Fiber Communication and Optoelectronic Exposition and Conference, OSA Technical Digest (CD) (Optical Society of America, 2008), paper SuR3.
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