Contents:
Hydroxylapatite deposits in tendons around joints results in the medical condition calcific tendinitis. HA is increasingly used to make bone grafting materials as well as dental prosthetics and repair. Some implants, e.
Microcrystalline hydroxyapatite MH is marketed as a "bone-building" supplement with superior absorption in comparison to calcium. The mechanism of hydroxyapatite HA chromatography is complicated and has been described as "mixed-mode" ion exchange. It involves nonspecific interactions between positively charged calcium ions and negatively charged phosphate ions on the stationary phase HA resin with protein negatively charged carboxyl groups and positively charged amino groups.
It may be difficult to predict the effectiveness of HA chromatography based on physical and chemical properties of the desired protein to be purified. For elution, a buffer with increasing phosphate concentration is typically used for application. In archaeology , hydroxyapatite from human and animal remains can be analysed to reconstruct ancient diets , migrations and palaeoclimate.
The mineral fractions of bone and teeth act as a reservoir of trace elements , including carbon, oxygen and strontium. Stable isotope analysis of human and faunal hydroxyapatite can be used to indicate whether a diet was predominantly terrestrial or marine in nature carbon, strontium ; [20] the geographical origin and migratory habits of an animal or human oxygen, strontium [21] and to reconstruct past temperatures and climate shifts oxygen.
Hydroxyapatite is a potential adsorbent for the defluoridation of drinking water as it forms fluorapatite in a 3 step process.
However, during the defluoridation process the HAP dissolves, and increases the values of pH and phosphate ion, which makes the defluoridated water unfit for drinking. From Wikipedia, the free encyclopedia.
Fahami, R. They have demonstrated that emulsion reactions control morphology, particle size and minimize the transformation of HAp phases. Silva, T. Van Garderen, M. Recently Huang et al. NP aggregation during the sample preparation, electron beam damage, preference for electron-dense atomic species.
Hydroxyapatite Hydroxylapatite crystals on matrix. Handbook of Mineralogy PDF. IV Arsenates, Phosphates, Vanadates.
Request PDF on ResearchGate | On Jan 1, , Yoshiki Oshida and others published Hydroxyapatite - Synthesis and Applications. Synthesis of hydroxyapatite for biomedical applications is reviewed. •. Several applications of hydroxyapatite composite are shown. •. A simple, efficient, and.
McGraw-Hill Companies. Acta Pathologica Microbiologica Scandinavica. Journal of Materials Science: Materials in Medicine.
In Ducheyne, Paul ed. Comprehensive Biomaterials. Synthesis, characterisation and thermal stability of powders". Solid State Ionics. Bibcode : Sci Current Opinion in Rheumatology.
Journal of the European Ceramic Society. Nutrition in Clinical Practice. Bibcode : Natur. Journal of Archaeological Science. In Stock Date:. Print Price:.
Print ISBN:. E-book Price:. E-book ISBN:. Binding Type:. Yoshiki Oshida. Read more. Category: Biomaterials. Classification: Materials Science and Engineering.