Site-specific peak intensity ratio (SPIR) from 1D 2H/1H NMR spectra for rapid distinction between natural and synthetic nicotine and detection of possible adulteration

2019 ◽  
Vol 411 (24) ◽  
pp. 6427-6434 ◽  
Author(s):  
Bin Liu ◽  
Yanli Chen ◽  
Xiaofang Ma ◽  
Kaifeng Hu
Keyword(s):  
1H Nmr ◽  
Intensity Ratio ◽  
Nmr Spectra ◽  
1H Nmr Spectra ◽  
Peak Intensity Ratio ◽  
Site Specific ◽  
Peak Intensity ◽  
Natural And Synthetic

1H-NMR spectra of high-boiling adamantylaromatic compounds

1978 ◽  
Vol 43 (1) ◽  
pp. 250-256
Author(s):  
Jaroslava Podehradská ◽  
Milan Hájek ◽  
Slavoj Hála
Keyword(s):  
1H Nmr ◽  
Nmr Spectra ◽  
1H Nmr Spectra

scholarly journals 13C and 1H NMR Spectra of Synthetic (25R)-5α-Spirostanes

1999 ◽  
Vol 23 (1) ◽  
pp. 48-49
Author(s):  
Martín A. Iglesias Arteaga ◽  
Carlos S. Pérez Martinez ◽  
Roxana Pérez Gil ◽  
Francisco Coll Manchado
Keyword(s):  
1H Nmr ◽  
Nmr Spectra ◽  
Chemical Shifts ◽  
1H Nmr Spectra ◽  
H Nmr ◽  
C 23 ◽  
Main Effects ◽  
Nmr Signals

The assignment of 13C and 1H NMR signals of synthetic (25 R)-5α-spirostanes is presented; the main effects on chemical shifts due to substitution at C-23 are briefly discussed.

The distribution of BrKα/RbKα peak intensity ratio in human whole blood samples

1994 ◽  
Vol 42 (3) ◽  
pp. 231-241 ◽  
Author(s):  
C. Shenberg ◽  
S. Spiegel ◽  
S. Chaitchik ◽  
P. Jordan ◽  
M. Kitzis ◽  
...  
Keyword(s):  
Whole Blood ◽  
Intensity Ratio ◽  
Peak Intensity Ratio ◽  
Blood Samples ◽  
Human Whole Blood ◽  
Peak Intensity ◽  
Whole Blood Samples

The effects of morphology on 1H NMR spectra and relaxation in semicrystalline polyolefins

1984 ◽  
Vol 22 (4) ◽  
pp. 589-616 ◽  
Author(s):  
K. J. Packer ◽  
J. M. Pope ◽  
R. R. Yeung ◽  
M. E. A. Cudby
Keyword(s):  
1H Nmr ◽  
Nmr Spectra ◽  
1H Nmr Spectra
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