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  • Title: Deep subsurface Raman spectroscopy of turbid media by a defocused collection system.
    Author: Eliasson C, Claybourn M, Matousek P.
    Journal: Appl Spectrosc; 2007 Oct; 61(10):1123-7. PubMed ID: 17958964.
    Abstract:
    A simple procedure for the recovery of deep subsurface Raman spectra in stratified turbid samples by defocusing a conventional Raman instrument is presented. The method is based on effects present with spatially offset Raman spectroscopy (SORS) and, although not as efficient as the standard SORS approach, it permits a simple way of recovering subsurface Raman spectra from less challenging samples. Demonstration of the effect is performed using a standard SORS device and a commercial Raman instrument on the noninvasive measurement of paracetamol tablets held within a nontransparent white plastic bottle.
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