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Quantitative Analysis of Clove Oil by NMR Spectrometry
Author(s) -
Chiang HungCheh,
Wang PeiLein,
Huang KehFeng
Publication year - 1983
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198300016
Subject(s) - chemistry , acetophenone , carbon 13 nmr , nuclear magnetic resonance spectroscopy , proton nmr , eugenol , chloroform , mass spectrometry , analytical chemistry (journal) , reagent , nmr spectra database , carbon 13 nmr satellite , chromatography , fluorine 19 nmr , organic chemistry , spectral line , physics , astronomy , catalysis
A procedure utilizing NMR spectrometry in the quantitative analysis of clove oil is described. The 1 H‐NMR spectrum is determined with acetophenone as internal standard, the 13 C‐NMR spectrum is determined with chloroform as internal standard and 0.1 M Cr(acac) 3 as relaxation reagent. The contents of eugenol are compared to the results obtained from G.C. (90.8%, s.d. 0.7%) and from chemical method (89.6% s.d. 1.2%). The result obtained from 1 H‐NMR method is 90.4% (s.d. 0.3%) and from 13 C‐NMR method is 90.5% (s.d. 0.7%). The time required for the 1 H‐NMR method is about 20 mins and for the 13 C‐NMR method is about 2‐3 hours . Apparently the 1 H‐NMR method proves to be more simple, rapid and accurate.