The use of electron spin resonance spectroscopy to determine the thermal histories of cereal grains |
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| Authors: | G.C. Hillman G.V. Robins D. Oduwole K.D. Sales D.A.C. McNeil |
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| Affiliation: | 1. Institute of Archaeology, University of London, 31-34 Gordon Square, London WC1H OPY, England;2. Department of Chemistry, Queen Mary College, University of London, Mile End Road, London E1 4NS, England;3. Department of Chemistry, The University, Leicester LE1 7RH, England |
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| Abstract: | The thermal histories of archaeological cereal grains have been explored with electron spin resonance spectroscopy by a quantitative study of pyrolysis-induced radical carbon. Comparison with modern samples of heated cereal grain has shown that the g value of the radical carbon signal is characteristic of exposure to a previous maximum temperature, and studies of other signal parameters suggest that further information, such as the duration of previous heating, may be deduced from such studies. The proposed method offers the possibility of quantitatively rigorous measurement in archaeological studies of cultural and technological processes that previously relied upon subjective assessment. |
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| Keywords: | thermal history electron spin resonance cereal grains Wadi Kubbaniya heat |
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