Abstract
In this work we combine electron paramagnetic resonance (EPR), high-resolution electron nucleus double resonance (ENDOR) and general triple resonance (GTR) spectroscopies, to study the local environment of the CO{sub 2}{sup -} groups created by ionizing radiation in fossil tooth enamel. We demonstrate that the CO{sub 2}{sup -} groups occupy slightly modified phosphate sites in the hydroxyapatite lattice. In quaternary shark enamel we found these groups to be interacting with water molecules in the apatite channels. The absence of water molecules as first neighbours in mammalian samples indicate, however, that these molecules are not significantly responsible for the stabilization of CO{sub 2}{sup -} dating centers in enamel. (author).
Vugman, N V;
[1]
Rossi, A M;
[2]
Rigby, S E.J.
[3]
- Universidade Federal, Rio de Janeiro, RJ (Brazil). Inst. de Fisica
- Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil)
- University Coll., London (United Kingdom). Dept. of Biology
Citation Formats
Vugman, N V, Rossi, A M, and Rigby, S E.J.
EPR dating CO{sub 2}{sup -} sites in tooth enamel apatites by ENDOR and triple resonance.
United Kingdom: N. p.,
1995.
Web.
doi:10.1016/0969-8043(94)00154-R.
Vugman, N V, Rossi, A M, & Rigby, S E.J.
EPR dating CO{sub 2}{sup -} sites in tooth enamel apatites by ENDOR and triple resonance.
United Kingdom.
https://doi.org/10.1016/0969-8043(94)00154-R
Vugman, N V, Rossi, A M, and Rigby, S E.J.
1995.
"EPR dating CO{sub 2}{sup -} sites in tooth enamel apatites by ENDOR and triple resonance."
United Kingdom.
https://doi.org/10.1016/0969-8043(94)00154-R.
@misc{etde_100059,
title = {EPR dating CO{sub 2}{sup -} sites in tooth enamel apatites by ENDOR and triple resonance}
author = {Vugman, N V, Rossi, A M, and Rigby, S E.J.}
abstractNote = {In this work we combine electron paramagnetic resonance (EPR), high-resolution electron nucleus double resonance (ENDOR) and general triple resonance (GTR) spectroscopies, to study the local environment of the CO{sub 2}{sup -} groups created by ionizing radiation in fossil tooth enamel. We demonstrate that the CO{sub 2}{sup -} groups occupy slightly modified phosphate sites in the hydroxyapatite lattice. In quaternary shark enamel we found these groups to be interacting with water molecules in the apatite channels. The absence of water molecules as first neighbours in mammalian samples indicate, however, that these molecules are not significantly responsible for the stabilization of CO{sub 2}{sup -} dating centers in enamel. (author).}
doi = {10.1016/0969-8043(94)00154-R}
journal = []
issue = {5}
volume = {46}
journal type = {AC}
place = {United Kingdom}
year = {1995}
month = {May}
}
title = {EPR dating CO{sub 2}{sup -} sites in tooth enamel apatites by ENDOR and triple resonance}
author = {Vugman, N V, Rossi, A M, and Rigby, S E.J.}
abstractNote = {In this work we combine electron paramagnetic resonance (EPR), high-resolution electron nucleus double resonance (ENDOR) and general triple resonance (GTR) spectroscopies, to study the local environment of the CO{sub 2}{sup -} groups created by ionizing radiation in fossil tooth enamel. We demonstrate that the CO{sub 2}{sup -} groups occupy slightly modified phosphate sites in the hydroxyapatite lattice. In quaternary shark enamel we found these groups to be interacting with water molecules in the apatite channels. The absence of water molecules as first neighbours in mammalian samples indicate, however, that these molecules are not significantly responsible for the stabilization of CO{sub 2}{sup -} dating centers in enamel. (author).}
doi = {10.1016/0969-8043(94)00154-R}
journal = []
issue = {5}
volume = {46}
journal type = {AC}
place = {United Kingdom}
year = {1995}
month = {May}
}