FT-C13 nuclear magnetic resonance spectra of natural humic substances
نویسندگان
چکیده
منابع مشابه
Physical studies of phospholipids. IV. High resolution nuclear magnetic resonance spectra of phospholipids and related substances.
The nuclear magnetic resonance spectra of phosphatidylethanolamines, phosphatidylcholines, phosphatidylserines, and sphingomyelin are discussed in terms of molecular structure. The factors influencing the band width of the protons of the polar head of phosphatidylcholines are surveyed. It is found that the band widths vary with solvent and that this variation can perhaps be correlated with the ...
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The difficulties in detection of C13 magnetic resonance signals in organic compounds which arise from the low natural abundance and the small magnetic moment of C'3 are well known.' For complex substances of biochemical interest, further reduction in signal-to-noise ratio occurs because of extensive carbonproton spin-spin interactions. Considerable relief from these difficulties is possible in ...
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ژورنال
عنوان ژورنال: Biochemical and Biophysical Research Communications
سال: 1976
ISSN: 0006-291X
DOI: 10.1016/s0006-291x(76)80240-9