Segmental motion of amphipathic molecules in aqueous solutions and micelles. Application of natural-abundance carbon-13 partially relaxes Fourier transform nuclear magnetic resonance spectroscopy

1973 ◽  
Vol 95 (15) ◽  
pp. 4871-4873 ◽  
Author(s):  
E. Williams ◽  
B. Sears ◽  
A. Allerhand ◽  
E. H. Cordes
1996 ◽  
Vol 79 (2) ◽  
pp. 423-425 ◽  
Author(s):  
George A Moniz ◽  
Gerald B Hammond

Abstract A new method for the separation and identification of ambrein in ambergris using adsorption chromatography and 1H and 13C Fourier transform nuclear magnetic resonance spectroscopy (FT-NMR) is presented. We demonstrated the effectiveness of this method by analyzing an approximately 85-year-old sample of suspected ambergris from the New Bedford Whaling Museum (New Bedford, MA). Results prove that ambrein remains a major constituent of ambergris even after 85 years of storage under ordinary conditions.


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