Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 267-272 |
| Seitenumfang | 6 |
| Fachzeitschrift | Radiochimica Acta |
| Jahrgang | 101 |
| Ausgabenummer | 4 |
| Publikationsstatus | Veröffentlicht - 19 März 2013 |
Abstract
Time resolved laser fluorescence spectroscopy (TRLFS and X-ray absorption fine structure (XAFS are used as complimentary techniques to show that the heterovalent incorporation of europium into apatite at temperatures relevant to environmental and biological processes occurs at grain boundaries and not the crystallographic calcium sites as previously presumed. For this study, we focus on mechanisms at the solid solution interface and therefore define this temperature regime as the range in which liquid water exists (0-100 C). Site-selective TRLFS show that the local Eu3+ symmetry does not match the presumed crystallographic site of incorporation. This is confirmed by XAFS results that show a deviation from the local environment in apatite. The transition of this amorphous europium to a crystallographic calcium site upon heating is then explained by grain growth and followed through a transition species by TRLFS.
ASJC Scopus Sachgebiete
- Chemie (insg.)
- Physikalische und Theoretische Chemie
Zitieren
- Standard
- Harvard
- Apa
- Vancouver
- BibTex
- RIS
in: Radiochimica Acta, Jahrgang 101, Nr. 4, 19.03.2013, S. 267-272.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - The incorporation of europium into apatite
T2 - A new explanation
AU - Holliday, Kiel S.
AU - Dardenne, Kathy
AU - Walther, Clemens
AU - Stumpf, Thorsten
PY - 2013/3/19
Y1 - 2013/3/19
N2 - Time resolved laser fluorescence spectroscopy (TRLFS and X-ray absorption fine structure (XAFS are used as complimentary techniques to show that the heterovalent incorporation of europium into apatite at temperatures relevant to environmental and biological processes occurs at grain boundaries and not the crystallographic calcium sites as previously presumed. For this study, we focus on mechanisms at the solid solution interface and therefore define this temperature regime as the range in which liquid water exists (0-100 C). Site-selective TRLFS show that the local Eu3+ symmetry does not match the presumed crystallographic site of incorporation. This is confirmed by XAFS results that show a deviation from the local environment in apatite. The transition of this amorphous europium to a crystallographic calcium site upon heating is then explained by grain growth and followed through a transition species by TRLFS.
AB - Time resolved laser fluorescence spectroscopy (TRLFS and X-ray absorption fine structure (XAFS are used as complimentary techniques to show that the heterovalent incorporation of europium into apatite at temperatures relevant to environmental and biological processes occurs at grain boundaries and not the crystallographic calcium sites as previously presumed. For this study, we focus on mechanisms at the solid solution interface and therefore define this temperature regime as the range in which liquid water exists (0-100 C). Site-selective TRLFS show that the local Eu3+ symmetry does not match the presumed crystallographic site of incorporation. This is confirmed by XAFS results that show a deviation from the local environment in apatite. The transition of this amorphous europium to a crystallographic calcium site upon heating is then explained by grain growth and followed through a transition species by TRLFS.
KW - Apatite
KW - Europium
KW - EXAFS
KW - Incorporation
KW - Mechanism
KW - TRLFS
UR - http://www.scopus.com/inward/record.url?scp=84875741920&partnerID=8YFLogxK
U2 - 10.1524/ract.2013.2023
DO - 10.1524/ract.2013.2023
M3 - Article
AN - SCOPUS:84875741920
VL - 101
SP - 267
EP - 272
JO - Radiochimica Acta
JF - Radiochimica Acta
SN - 0033-8230
IS - 4
ER -