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  • Falcon, Javier A., et al. (author)
  • In situ monitoring of antisolvent addition crystallization with principal components analysis of Raman spectra
  • 2004
  • In: Crystal Growth & Design. - : American Chemical Society (ACS). - 1528-7483 .- 1528-7505. ; 4:3, s. 457-463
  • Journal article (peer-reviewed)abstract
    • Fiber optic Raman spectroscopy was used for in situ monitoring of antisolvent addition crystallization of progesterone. Raman spectral features of the solute and the antisolvent were subjected to principal components analysis (PCA) to attempt to obtain information that is not readily apparent from the raw spectral data. For the system utilized, PCA was able to distinguish spectral features from the solute in solution, the solute crystals, and the antisolvent. Furthermore, PCA was capable of detecting subtle changes in the spectral data (as the addition of antisolvent progressed) that could be used as a warning for the onset of crystallization. The current study demonstrates the advantages that can be gained by combining PCA with Raman spectroscopy for monitoring crystallizations in situ.
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2.
  • Falcon, Javier A., et al. (author)
  • Monitoring of antisolvent addition crystallization with Raman spectroscopy
  • 2003
  • In: Crystal Growth & Design. - : American Chemical Society (ACS). - 1528-7483 .- 1528-7505. ; 3:6, s. 947-952
  • Journal article (peer-reviewed)abstract
    • Fiber optic Raman spectroscopy was used for in situ monitoring of antisolvent addition crystallization of cortisone acetate. Raman spectral features of the solvent, the antisolvent, and the solute were monitored to measure the relative concentration of the components. Different rates of antisolvent addition were monitored and the resulting solid-state form was characterized using Raman spectroscopy and DSC. Raman spectroscopy was used to monitor dehydration during storage of the product crystals. The current study demonstrates the advantages of using Raman spectroscopy to monitor the solution phase during crystallization and simultaneously monitoring the solid-state form.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Falcon, Javier A. (2)
Berglund, Kris (1)
Berglund, Kris A. (1)
University
Luleå University of Technology (2)
Language
English (2)
Research subject (UKÄ/SCB)
Engineering and Technology (2)

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