Journal Highlight: Examination of amber and related materials by NMR spectroscopy

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  • Published: Jan 2, 2015
  • Author: spectroscopyNOW
  • Channels: NMR Knowledge Base
thumbnail image: Journal Highlight: Examination of amber and related materials by NMR spectroscopy
The solid-state 13C and solution 1H NMR spectra of fossilized resins (ambers) has generated five groupings of materials based on spectral characteristics.

Examination of amber and related materials by NMR spectroscopy

Magnetic Resonance in Chemistry, 2015, 53, 2-8
Joseph B. Lambert, Jorge A. Santiago-Blay, Yuyang Wu and Allison J. Levy

Abstract: Examination of the solid-state 13C and solution 1H NMR spectra of fossilized resins (ambers) has generated five groupings of materials based on spectral characteristics. The worldwide Group A is associated with the botanical family of the Araucariaceae. The worldwide Group B is associated with the Dipterocarpaceae. Baltic amber or succinite (Group C) is related to Group A but with a disputed conifer source. Amber from Latin America, the Caribbean, and Africa is associated with the Fabaceae, the genus Hymenaea in particular. The minor Group E contains the rare fossil polystyrene. The spectra of jet indicate that it is a coal-like material with a rank between lignite and sub-bituminous coal.

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