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Recent Studies from University of Belgrade Add New Data to Halogens

January 31, 2014

By a News Reporter-Staff News Editor at Science Letter -- A new study on Halogens is now available. According to news reporting from Belgrade, Serbia, by NewsRx journalists, research stated, "Synthetic biomaterials based on fluorine substituted hydroxyapatite are potentially attractive for orthopedic and dental implant applications. The new synthesis of fluorine substituted hydroxyapatite samples were done by neutralization, which consists of adding the solution of HF and H3PO4 in suspension of Ca(OH)(2)."

The news correspondents obtained a quote from the research from the University of Belgrade, "Characterization studies from XRD, SEM and FTIR spectra showed that crystals are obtained with apatite structure and those particles of all samples are nano size, with an average length of 80 nm and about 15-25 nm in diameter. The central composite design was used in order to determine the optimal conditions for the antimicrobial activity of the synthesized samples. In order to evaluate the influence of operating parameters on the percent of viable cell reduction of Streptococcus mutans, three independent variables were chosen: exposure time, pH of saline and floride concentration in apatite samples. The experimental and predicted antimicrobial activities were in close agreement. Antimicrobial activity of the samples increases with the increase of fluoride concentration and the decreased pH of saline."

According to the news reporters, the research concluded: "The maximum antimicrobial activity was achieved at the initial pH of 4."

For more information on this research see: Synthesis of fluorine substituted hydroxyapatite nanopowders and application of the central composite design for determination of its antimicrobial effects. Applied Surface Science, 2014;290():346-352. Applied Surface Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier -; Applied Surface Science -

Our news journalists report that additional information may be obtained by contacting V. Stanic, University of Belgrade, Fac Pharm, Belgrade 11221, Serbia. Additional authors for this research include S. Dimitrijevic, D.G. Antonovic, B.M. Jokic, S.P. Zec, S.T. Tanaskovic and S. Raicevic (see also Halogens).

Keywords for this news article include: Serbia, Europe, Belgrade, Fluorine, Halogens, Nanopowder, Phosphates, Nanotechnology, Hydroxyapatites, Phosphoric Acids, Emerging Technologies

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Source: Science Letter

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