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Investigation of different bone matrices by vibrational spectroscopy

V. COMAN1,* , R. GRECU1, M. BĂCIUŢ2, G. BĂCIUŢ2, P. PRODAN2, V. SIMON3

Affiliation

  1. “Raluca Ripan” Institute for Research in Chemistry, P.O. Box 702, 400294 Cluj-Napoca, Romania
  2. “Iuliu Haţieganu” University of Medicine and Pharmacy, Faculty of Dental Medicine, 400029 Cluj-Napoca, Romania
  3. “Babeş-Bolyai” University, Faculty of Physics, 400084 Cluj-Napoca, Romania

Abstract

To study bones of various origins (human bone and bones from different animal species) the complementary spectral methods, infrared and Raman spectroscopy, were used. The main vibrational bands characteristic to major constituents of bones, that is collagen and calcium phosphate, were identified. Mature deer antler has the same constituents. The relative content of the organics in different bones was evaluated from Raman spectra as an integration ratio between the ν(CH) bands at 2825-3080 cm-1 and the ν1[PO4]3- band centered at 960 cm-1. This ratio decreases in the order: mature deer antler > human skull > fish > pig. The thermal behaviour of bones was investigated by infrared spectroscopy. Heating of powdered bones produces at 200 oC the diminishing of the organic component, marked by the reduced intensity of the amide III band observed at 1239 cm-1. The spectra of samples heated at 900 oC put in evidence the removal of organic components and the presence of a variety of hydroxyapatite with an improved cristallinity degree, especially in the case of fish bone..

Keywords

Bone, Deer antler, Infrared spectroscopy, Raman spectroscopy.

Submitted at: March 23, 2007
Accepted at: Nov. 16, 2007

Citation

V. COMAN, R. GRECU, M. BĂCIUŢ, G. BĂCIUŢ, P. PRODAN, V. SIMON, Investigation of different bone matrices by vibrational spectroscopy, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 11, pp. 3372-3375 (2007)