The Approach for Determination of Concentration and Location of Major Impurities (Mg, Na, K) in Biological Apatite of Mineralized Tissues

Authors S.N. Danilchenko1,2

1 Sumy State University, 2, Rimsky Korsakov Str., 40007 Sumy, Ukraine

2 Institute of Applied Physics, NAS Ukraine, 58, Petropavlovskaya Str., 40030 Sumy, Ukraine

Issue Volume 5, Year 2013, Number 3
Dates Received 26 February 2013; published online 17 October 2013
Citation S.N. Danilchenko, J. Nano- Electron. Phys. 5 No 3, 03043 (2013)
PACS Number(s) 61.72.Ss, 61.30.Hn
Keywords Bioapatite, Mg (8) , Na (370) , K (163) , Concentration (6) , Location (9) , Cation sublattice, Solubility, Annealing (16) , Ultrasound (3) , Crystal surface.
Annotation Biological apatite is the main mineral phase of bone tissue and of numerous calcified pathological deposits. Mg, Na, and K are usually absent in the structure of pure apatite and are present in such biominerals in significant concentrations. In present work the approach was tested for the determination of predominant location of these elements through separation of apatite and non-apatitic components of bone tissue mineral. The preparation procedures include the annealing and subsequent ultrasonication of powdered material in aqueous medium; concentrations of elements were determined by atomic spectrum analysis. The results suggest that Mg and Na in bone apatite can be both in the structurally bounded (substituting calcium in lattice) and in the labile state (being localized on the crystal surface), while K is not able to join the apatite structure in significant amount or be chemically bounded to it.

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