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THE PROVENANCE AND COAL RANK OF JET BY CARBON‐13 NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY
Author(s) -
LAMBERT J. B.,
FRYE J. S.,
JURKIEWICZ A.
Publication year - 1992
Publication title -
archaeometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 67
eISSN - 1475-4754
pISSN - 0003-813X
DOI - 10.1111/j.1475-4754.1992.tb00481.x
Subject(s) - carbon fibers , jet (fluid) , provenance , characterization (materials science) , bituminous coal , coal , spectroscopy , resonance (particle physics) , nuclear magnetic resonance , spectral line , materials science , nuclear magnetic resonance spectroscopy , rank (graph theory) , chemistry , analytical chemistry (journal) , organic chemistry , physics , atomic physics , geology , composite material , nanotechnology , paleontology , quantum mechanics , astronomy , composite number , thermodynamics , mathematics , combinatorics
The carbon‐13 nuclear magnetic resonance spectra of jet samples from England and Spain resemble those of carbonaceous materials from lignitic and sub‐bituminous ranks. This characterization is based on the aromatic/aliphatic ratio of resonances and on the pattern of fine structure. Particularly characteristic of jet is the well‐defined fine structure in the aromatic region that may be attributed to phenolic functionalities. This fine structure is found in all English and Spanish samples. Resonances from rapidly moving methyl groups are found in English but not in Spanish samples and may provide a means of distinguishing provenance.