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@ARTICLE{Zougrou:301503,
      author       = {Zougrou, Ioanna-Maria and Katsikini, M. and Brzhezinskaya,
                      M. and Pinakidou, F. and Papadopoulou, L. and Tsoukala, E.
                      and Paloura, Eleni},
      title        = {{C}a $\mathrm{{L}_{2,3}}$-{E}dge {XANES} and {S}r
                      {K}-{E}dge {EXAFS} {S}tudy of {H}ydroxyapatite and {F}ossil
                      {B}one {A}patite},
      journal      = {The Science of nature},
      volume       = {103},
      number       = {7-8},
      issn         = {0028-1042},
      address      = {Berlin},
      publisher    = {Springer8173},
      reportid     = {PUBDB-2016-02712},
      pages        = {60},
      year         = {2016},
      note         = {(c) Springer-Verlag Berlin Heidelberg},
      abstract     = {Upon burial, the organic and inorganic components of hard
                      tissues such as bone, teeth, and tusks are subjected to
                      various alterations as a result of interactions with the
                      chemical milieu of soil, groundwater, and presence of
                      microorganisms. In this study, simulation of the Ca
                      L$_{2,3}$-edge X-ray absorption near edge structure (XANES)
                      spectrum of hydroxyapatite, using the CTM4XAS code, reveals
                      that the different symmetry of the two nonequivalent
                      Ca$_{(1)}$ and Ca${(2)}$ sites in the unit cell gives rise
                      to specific spectral features. Moreover, Ca L$_{2,3}$-edge
                      XANES spectroscopy is applied in order to assess variations
                      in fossil bone apatite crystallinity due to heavy bacterial
                      alteration and catastrophic mineral dissolution, compared to
                      well-preserved fossil apatite, fresh bone, and geologic
                      apatite reference samples. Fossilization-induced chemical
                      alterations are investigated by means of Ca L$_{2,3}$-edge
                      XANES and scanning electron microscopy (SEM) and are related
                      to histological evaluation using optical microscopy images.
                      Finally, the variations in the bonding environment of Sr and
                      its preference for substitution in the Ca$_{(1)}$ or
                      Ca$_{(2)}$ sites upon increasing the Sr/Ca ratio is assessed
                      by Sr K-edge extended X-ray absorption fine structure
                      (EXAFS) spectroscopy.},
      cin          = {DOOR},
      ddc          = {500},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {899 - ohne Topic (POF3-899) / CALIPSO - Coordinated Access
                      to Lightsources to Promote Standards and Optimization
                      (312284) / ELISA - European Light Sources Activities -
                      Synchrotrons and Free Electron Lasers (226716)},
      pid          = {G:(DE-HGF)POF3-899 / G:(EU-Grant)312284 /
                      G:(EU-Grant)226716},
      experiment   = {EXP:(DE-H253)D-C-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000382121200011},
      pubmed       = {pmid:27379398},
      doi          = {10.1007/s00114-016-1383-y},
      url          = {https://bib-pubdb1.desy.de/record/301503},
}