ReviewAnalytical and bioanalytical chemistry2026
Photon density wave spectroscopy as process analytical technology: a review of recent advances in technology and application.
Review in Analytical and bioanalytical chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Photon density wave (PDW) spectroscopy is a calibration-free method for the simultaneous, absolute, and independent quantification of the optical absorption coefficient and the reduced scattering coefficient of highly light scattering materials. It allows for dilution-free particle sizing in concentrated liquid systems. Thus, it is beneficial as an inline process analytical technology (PAT). A brief comparison to other particle sizing technologies, the theoretical background of PDW spectroscopy, the current technical status, and limitations and technical challenges are reviewed. In addition, a comparative overview of the recent applications of PDW spectroscopy as PAT for chemical, biotechnological, and food processing is provided.
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