AMBER FROM THE DOMINICAN REPUBLIC: ANALYSIS BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY
暂无分享,去创建一个
The carbon-13 NMR spectra of amber from several mining sites in the Dominican Republic show considerable variation. In certain cases the differences are sufficiently distinct to serve as a reliable indicator of provenance. The gradations within the resonances of unsaturated carbons may reflect the relative ages of the samples, because fossilization and diagenesis can remove this functionality.
[1] M. Sanderson,et al. Amber with Insect and Plant Inclusions from the Dominican Republic , 1960, Science.
[2] J. H. Langenheim. Amber: a botanical inquiry. , 1969, Science.
[3] M. Cassar,et al. Organic components in historical non-metallic seals identified using 13C-NMR spectroscopy , 1983, Nature.
[4] J B Lambert,et al. Carbon Functionalities in Amber , 1982, Science.