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Advantages and Disadvantages of Raman

Advantages and Disadvantages of Raman

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Advantages and Disadvantages of Raman

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  1. Advantages and Disadvantages of Raman Advantages Disadvantages Insensitive (LOD ~ 0.1%) Fluorescence interference Trade off of  / Int / fluor. • Water is weak scatterer • Little sample prep • Sharper peaks than IR • Use of fiber optics

  2. Surface Plasmons – electron oscillations at surface of a metal. Surface Plasmon Resonance – when freq of light photons matches the natural freq of oscillating surface electrons.

  3. FT-Raman

  4. Fiber-Optic Raman Spectrometer BP=band pass filter BR=band rejection filter

  5. Control Electronics TE Cooled CCD Detector ProbeHead Imaging Spectrograph HoloPlex Notch Slit Invictus NIR Laser Instrumentation Kaiser Optical Systems Inc Rxn1 Raman system operating at 785 nm

  6. Improving Raman Collection Efficiency

  7. Crystal Hydrate Structure

  8. - RAT - RMT Calibration

  9. immediately 3 min 6 min 9 min Int 12 min 15 min 18 min 1838.7 1700 1600 1500 1400 1300 1200 1100 977.4 Raman Shift / cm-1 Phase Transformation upon Water Addition

  10. Apply Calibration to get Kinetic Transformation Profile

  11. NMR Spectroscopy Chapters 19

  12. http://www.cem.msu.edu/~reusch/VirtualText/Spectrpy/nmr/Images/precessn.gifhttp://www.cem.msu.edu/~reusch/VirtualText/Spectrpy/nmr/Images/precessn.gif