Substitution of calcium by strontium within selected calcium phosphates

Rokita, E.; Hermes, Christoph; Nolting, H.‐F.; Ryczek, J.

doi:10.1016/0022-0248(93)90543-6

Cited by 47 publications

(40 citation statements)

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“…Rokita et al 1996). It is incorporated into the carbonate hydroxyapatite lattice at four-fold Ca 2+ sites (Rokita et al 1993, Vukovic et al 1998) and also by adsorption onto the crystal surface (Dahl et al 2001, Parker andToots 1980). In laboratory studies, the amount of strontium incorporated into the skeleton of animals is believed to directly reflect the amount available from the diet and environment, i.e.…”

Section: Accepted For Publication In the Annals Of Human Biology 2010mentioning

confidence: 99%

Passports from the past: Investigating human dispersals using strontium isotope analysis of tooth enamel

Montgomery

2010

Annals of Human Biology

278

261

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. AbstractStrontium isotopes are a powerful tool which provide information about provenance directly from the tissues of humans rather than the grave context and burial goods.Geographical variation in strontium isotopes is primarily controlled by the underlying geology but there are many other factors that need to be considered before migratory individuals can be identified. Consequently, despite many studies which have shown that the method works well, it is clear that much remains to be clarified and it will not work for every question or in every place. It rests on the assumption that people were sourcing their food locally and that there is a measurable strontium isotope difference between the place the person migrated from and the place they migrated to. As migrants may deliberately seek out familiar soil types and terrains in their new homeland, some questions surrounding major migration events may prove intractable for this technique. Other factors that can create heterogeneity or homogeneity leading to false positives or false negatives, such as human choices or coastal subsistence, are explored and the metabolism of strontium into human tooth enamel is discussed.Several models of land use choices by humans are presented to highlight the subtleties inherent in the isotope data and these are used to interpret archaeological human isotope ratios from three studies.

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Section: Accepted For Publication In the Annals Of Human Biology 2010mentioning

confidence: 99%

Passports from the past: Investigating human dispersals using strontium isotope analysis of tooth enamel

Montgomery

2010

Annals of Human Biology

278

261

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“…In the case of Sr, its incorporation in several calcium phosphate compounds including apatitic tricalcium phosphate, HAP, OCP and dicalcium phosphate dihydrate have been considered [78].…”

Section: X-ray Absorption Spectroscopymentioning

confidence: 99%

Diffraction techniques and vibrational spectroscopy opportunities to characterise bones

et al. 2009

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“…Bushite, synthesized according to the procedure described previously [4], was heated in air for 8 h at 500°C. Such incineration parameters were selected on the basis of our studies of the bone minerahzation process [5]. The simplest method to remove the organic matrix from bone samples, i.e.…”

mentioning

confidence: 99%

“…It has been shown [1] that the substitution of Ca by Sr within calcium phosphates is a compound-dependent process. The results reported so far have dealt with the preparations of Sr-contaminated Ca-P compounds produced at a constant temperature.…”

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Heating-Induced Conversion of Sr-Contaminated Brushite - EXAFS Data Analysis

et al. 1994

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The extended X-ray absorption fine structure method was applied to determine changes of the coordination parameters of Sr atks during the thermal conversion of Sr-contaminated brushite into calcium pyrophosphate. The results revealed that the changes of the crystallographic structure induced by heating are correlated with the rearrangement of the Sr environment. It was also confirmed that Sr may be used as a marker of Ca in cases of thermal conversions of orthophosphate groups into pyrophosphate groups. PACS numbers: 78.70.DmIt has been shown [1] that the substitution of Ca by Sr within calcium phosphates is a compound-dependent process. The results reported so far have dealt with the preparations of Sr-contaminated Ca-P compounds produced at a constant temperature. The status of Sr atoms incorporated into Ca-P crystal lattice during thermal treatment of the compound remains unclear.The problem was investigated using the well-described [2, 3] transition of brushite (DCPD -CaHPO4.2H2O) to calcium pyrophosphate (CPR -Ca2P2O7). Bushite, synthesized according to the procedure described previously [4], was heated in air for 8 h at 500°C. Such incineration parameters were selected on the basis of our studies of the bone minerahzation process [5]. The simplest method to remove the organic matrix from bone samples, i.e. to produce a material useful for the investigations of the structure of the bone minerals, is ashing of the bone samples for ca. 8 h at 500°C. Therefore the results obtained are directly correlated with the studies of the bone mineralization process. To prepare Sr-contaminated DCPD the procedure for the synthesis of pure DCPD was modified by adding Sr ions (0.5 wt% of Ca) to a solution containing Ca ions. The heating procedure was performed for both pure and Sr-contaminated DCPD. The Sr-contaminated compounds were analysed by extended X-ray absorption fine stucture spectroscopy (767)

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Substitution of calcium by strontium within selected calcium phosphates

Cited by 47 publications

References 40 publications

Passports from the past: Investigating human dispersals using strontium isotope analysis of tooth enamel

Passports from the past: Investigating human dispersals using strontium isotope analysis of tooth enamel

Diffraction techniques and vibrational spectroscopy opportunities to characterise bones

Heating-Induced Conversion of Sr-Contaminated Brushite - EXAFS Data Analysis

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