Startseite Chemical analyses and X-ray diffraction investigations of human hydroxyapatite minerals from aortic valve stenoses
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Chemical analyses and X-ray diffraction investigations of human hydroxyapatite minerals from aortic valve stenoses

  • Ludwig Stork , Paul Müller , Richard Dronskowski und Jan R. Ortlepp
Veröffentlicht/Copyright: 25. September 2009
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Zeitschrift für Kristallographie - Crystalline Materials
Aus der Zeitschrift Zeitschrift für Kristallographie - Crystalline Materials Band 220 Heft 2-3

Abstract

A total of 23 solid, mineral-like samples from calcified aortic valves of human origin have been investigated by means of classic analytical techniques (atomic absorption spectroscopy) and powder X-ray diffraction methods (Rietveld approach). The calcification goes back to hexagonal Ca-deficient hydroxyapatite, and there is a large variance in absolute hydroxyapatite contents as well as in crystalline qualities. The source of the calcium deficiency has been traced back to the 4f calcium site of the crystal structure in P63/m, and the calcium loss is compensated by hydroxy group deficiencies. Despite no correlation between analytically and diffractionally determined calcium contents, the crystallinities of the samples and the sharpnesses of their Bragg peaks seem to be related with the sub-occupancy of the 4f calcium site.

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Published Online: 2009-9-25
Published in Print: 2005-3-1

© 2005 Oldenbourg Wissenschaftsverlag GmbH

Artikel in diesem Heft

  1. Editorial: Hans-Jörg Deiseroth zum 60. Geburtstag
  2. The coloring problem in intermetallics: bonding and properties of Tb3Zn3.6Al7.4 with the La3Al11 structure type
  3. On the crystal structure of γ-AgMg4
  4. Metallic barrelane: crystal structure, physical properties and bonding analysis of La16Al13
  5. Structural phase transition of CeAuGe at high pressure
  6. Incommensurately modulated CeSi1.82
  7. Cs6[Fe2O6] and Rb4[Fe2O5]: New oxoferrates(III) with edge sharing FeO4 tetrahedra
  8. Crystal structures of M2[B10H10] (M = Na, K, Rb) via real-space simulated annealing powder techniques
  9. The Lewis acid-base adducts of bismuth and aluminium trihalides — crystal structures of [Bi2X4][AlX4]2 (X = Cl, Br)
  10. Solvothermal synthesis, phase transition and crystal structure of β- and γ-CuPb3Br7
  11. The 1-N amides 1∞[Eu2(Pyr)4(PyrH)2(NH3)] · PyrH and [Yb2(Cbz)4(NH2)2(NH3)4] · 3CbzH: Distinctions in the crystal structures, thermal properties and ammonolysis tendency
  12. Tetranuclear [Zr4(OH)8(H2O)16] units in the crystal structure of ZrOI2 · 8 H2O
  13. Single crystal structure refinement of tetramethylammonium-hectorite
  14. Crystal structures of Gd2(Cl3CCOO)6(bipy)2(H2O)2 · 4 bipy, Pr(Cl3CCOO)3(bipy)2, Nd(Cl3CCOO)3(bipy)2 and Er(Cl3CCOO)3(bipy)2(H2O)
  15. [Ba2(C2H6O2)4][Ge2(C2H4O2)6] · 2.5 C2H6O2 – an ethanediolato complex of germanium. Synthesis, thermal decomposition and crystal structure
  16. Synthesis and crystal structure of {[Li(NH3)4]2[18-crown-6]}[Li(NH3)4]2(Sn3ph6)2 · 4 NH3
  17. Nd(NH2SO3)(SO4) · 1.5 H2O: a non-centrosymmetric amidosulfate-sulfate of neodymium
  18. Synthesis of InxGa1–xN solid solutions
  19. Chemical analyses and X-ray diffraction investigations of human hydroxyapatite minerals from aortic valve stenoses
  20. M4,667Ch[SiO4]3 (M = Nd, Sm; Ch = O, S): structural comparison of two apatite-type lanthanoid chalcogenide ortho-oxosilicates
  21. Neutron powder diffraction study on Li1.8Na0.2MgCl4
  22. On the crystal structure of a new modification of 2-amino-4,6-dichloro-1,3,5-triazine
  23. In-situ investigation of oxygen diffusion in Sr, Mg-doped LaGaO3 superionic conductors with a simultaneously applied electric field
  24. Surface dynamics of III—V semiconductors studied by in situ X-ray diffraction during molecular beam epitaxy
  25. The real structure of Na3BiO4 by electron microscopy, HR-XRD and PDF analysis
  26. High-pressure phase transition of the oxonitridosilicate chloride Ce4[Si4O3+xN7–x]Cl1–xOx with x = 0.12 and 0.18
  27. Noncentrosymmetric coordination networks based on nitrate and acetylenedicarboxylate anions
  28. The crystal structure of γ-P4, a low temperature modification of white phosphorus
  29. Phosphorus-rich phosphorus selenides P14+xSe (x = 1, 5)
  30. Crystal structure and optical properties of the new 8O polytype of Ca2Ta2O7
  31. Photoluminescence of ZnGa2S4 : Eu2+
  32. A structural differentiation of quaternary copper argyrodites: Structure — property relations of high temperature ion conductors
  33. In situ bulk structural study on solid-state dynamics and catalytic activity correlations of a H4[PNbMo11O40] partial oxidation catalyst
  34. Structural study of β-Ni(OH)2 and α-Ni(OH)2 variants for electrode applications
https://doi.org/10.1524/zkri.220.2.201.59118

Artikel in diesem Heft

  1. Editorial: Hans-Jörg Deiseroth zum 60. Geburtstag
  2. The coloring problem in intermetallics: bonding and properties of Tb3Zn3.6Al7.4 with the La3Al11 structure type
  3. On the crystal structure of γ-AgMg4
  4. Metallic barrelane: crystal structure, physical properties and bonding analysis of La16Al13
  5. Structural phase transition of CeAuGe at high pressure
  6. Incommensurately modulated CeSi1.82
  7. Cs6[Fe2O6] and Rb4[Fe2O5]: New oxoferrates(III) with edge sharing FeO4 tetrahedra
  8. Crystal structures of M2[B10H10] (M = Na, K, Rb) via real-space simulated annealing powder techniques
  9. The Lewis acid-base adducts of bismuth and aluminium trihalides — crystal structures of [Bi2X4][AlX4]2 (X = Cl, Br)
  10. Solvothermal synthesis, phase transition and crystal structure of β- and γ-CuPb3Br7
  11. The 1-N amides 1∞[Eu2(Pyr)4(PyrH)2(NH3)] · PyrH and [Yb2(Cbz)4(NH2)2(NH3)4] · 3CbzH: Distinctions in the crystal structures, thermal properties and ammonolysis tendency
  12. Tetranuclear [Zr4(OH)8(H2O)16] units in the crystal structure of ZrOI2 · 8 H2O
  13. Single crystal structure refinement of tetramethylammonium-hectorite
  14. Crystal structures of Gd2(Cl3CCOO)6(bipy)2(H2O)2 · 4 bipy, Pr(Cl3CCOO)3(bipy)2, Nd(Cl3CCOO)3(bipy)2 and Er(Cl3CCOO)3(bipy)2(H2O)
  15. [Ba2(C2H6O2)4][Ge2(C2H4O2)6] · 2.5 C2H6O2 – an ethanediolato complex of germanium. Synthesis, thermal decomposition and crystal structure
  16. Synthesis and crystal structure of {[Li(NH3)4]2[18-crown-6]}[Li(NH3)4]2(Sn3ph6)2 · 4 NH3
  17. Nd(NH2SO3)(SO4) · 1.5 H2O: a non-centrosymmetric amidosulfate-sulfate of neodymium
  18. Synthesis of InxGa1–xN solid solutions
  19. Chemical analyses and X-ray diffraction investigations of human hydroxyapatite minerals from aortic valve stenoses
  20. M4,667Ch[SiO4]3 (M = Nd, Sm; Ch = O, S): structural comparison of two apatite-type lanthanoid chalcogenide ortho-oxosilicates
  21. Neutron powder diffraction study on Li1.8Na0.2MgCl4
  22. On the crystal structure of a new modification of 2-amino-4,6-dichloro-1,3,5-triazine
  23. In-situ investigation of oxygen diffusion in Sr, Mg-doped LaGaO3 superionic conductors with a simultaneously applied electric field
  24. Surface dynamics of III—V semiconductors studied by in situ X-ray diffraction during molecular beam epitaxy
  25. The real structure of Na3BiO4 by electron microscopy, HR-XRD and PDF analysis
  26. High-pressure phase transition of the oxonitridosilicate chloride Ce4[Si4O3+xN7–x]Cl1–xOx with x = 0.12 and 0.18
  27. Noncentrosymmetric coordination networks based on nitrate and acetylenedicarboxylate anions
  28. The crystal structure of γ-P4, a low temperature modification of white phosphorus
  29. Phosphorus-rich phosphorus selenides P14+xSe (x = 1, 5)
  30. Crystal structure and optical properties of the new 8O polytype of Ca2Ta2O7
  31. Photoluminescence of ZnGa2S4 : Eu2+
  32. A structural differentiation of quaternary copper argyrodites: Structure — property relations of high temperature ion conductors
  33. In situ bulk structural study on solid-state dynamics and catalytic activity correlations of a H4[PNbMo11O40] partial oxidation catalyst
  34. Structural study of β-Ni(OH)2 and α-Ni(OH)2 variants for electrode applications
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