Biological Calcification : Investigation by X-ray Absorption Spectroscopy
نویسندگان
چکیده
Model compounds which resemble the calcium phosphates deposited in biological systems have been synthesised, characterised by a variety of physical techniques and their EXAFS spectra recolded abo~c, the calcium K edge. The spectrum of one of the compounds, hydroxyapatite, has been ;in:~iysecl and the results used to aid the analysis of spectra from related compounds. Spectra recorded above the phosphorus K edge provide complementary information on the structures of biologics! calcium phosphates.
منابع مشابه
An investigation on absorption properties of exfoliated graphite for oil spill from Caspian Sea water
Oil spills are the most important environmental impact in oceans and seas. In this article, Oil absorption, which was explored from Sardar-e-Jangal oilfield in Caspian Sea, by exfoliated graphite (EG), was investigated. Graphite was exfoliated through the reaction of graphite-CrO3 intercalation compounds with hydrogen peroxide. The obtained absorbent was characterized by Brunauer-Emmett-Teller ...
متن کاملQuantitative investigation of two metallohydrolases by X-ray absorption spectroscopy near-edge spectroscopy
The last several years have witnessed a tremendous increase in biological applications using X-ray absorption spectroscopy (BioXAS), thanks to continuous advancements in synchrotron radiation (SR) sources and detector technology. However, XAS applications in many biological systems have been limited by the intrinsic limitations of the Extended X-ray Absorption Fine Structure (EXAFS) technique e...
متن کاملGreen Synthesis of Zinc Oxide Nanoparticles using Garlic skin extract and Its Characterization
Plant-mediated synthesis of metal oxide nanoparticles is a promising alternative to the traditional method of physical and chemical synthesis. In this paper, we report the green synthesis of zinc oxide nanoparticles (ZnONPs) by a biological method. During the study, Zinc oxide nanoparticles were synthesized by Allium sativum skin (garlic skin) extract. Formation of zinc oxide nanoparticles has ...
متن کاملStrontium hexa-ferrites and polyaniline nanocomposite: Studies of magnetization, coercivity, morphology and microwave absorption
In this work, the investigation of wave absorption, phase formation, crystal structure and magnetic properties of SrFe12O19 hexa-ferrites nanoparticles that synthesized by co-precipitation using a microwave heating system and polyaniline-SrFe12O19 was carried out by using a combination of vector network analyser (VNA), X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier tra...
متن کاملA Review of the Applications of Synchrotron Radiation in Archaeological Sciences
The scientific research regarding investigation, characterization and protection of the archeological specimens is manifested through a notable participation of multidisciplinary subjects and experts, scientists and archeometrists. One of the main principals which are considered by archaeometrists in the study of the precious specimens is the utilizing nondestructive methods. As an example, in ...
متن کامل