Quantification of octacalcium phosphate, authigenic apatite and detrital apatite in coastal sediments using differential dissolution and standard addition
نویسندگان
چکیده
منابع مشابه
Surface complexation and proton-promoted dissolution in aqueous apatite systems*
The dissolution of hydroxyapatite (HAP) and fluorapatite (FAP) has been studied (25 °C, 0.1 M NaCl medium) within the pH ranges 2–11 (FAP) and 4–10 (HAP). A range of techniques has been utilized to achieve understanding in how these two abundant minerals may interact with their natural surroundings (e.g., body fluids and soil environments). Synthetic crystalline HAP and FAP were prepared, and b...
متن کاملFabrication of biporous low-crystalline apatite based on mannitol dissolution from apatite cement.
Biporous (macro- and microporous) calcium phosphate gains much attention as a bone substitute material because of its large surface area and that it improves cell penetration. In the present study, we evaluated the feasibility of biporous, low-crystalline apatite based on dissolution of mannitol from self-setting apatite cement (Biopex). Mannitol--known as a biocompatible, easily dissolved mono...
متن کاملEnergetics of lanthanide-doped calcium phosphate apatite
Lanthanides “Ln” (rare earths) are critical elements found in natural minerals such as calcium phosphate apatites, in sedimentary and igneous settings as well as in skeletal diagenesis. From a medical point of view, nanoparticles of lanthanide-doped apatites can be produced for conferring luminescence properties of interest in cancer cells detection. However, the impact of the substitution of L...
متن کاملTHE EFFECT OF ADDITION OF NAHF2 ON PHYSICOCHEMICAL AND MECHANICAL PROPERTIES OF APATITE CEMENTS
The effect of addition of NaHF2 on the cement setting and the set mass has been studied as an initial step to determine how fluoride influences the characteristics of a calcium phosphate cement, consisting of tetracalcium phosphate [TTCP:Ca4 (PO4)2O] and dicalcium phosphate dihydrate [DCPD:CaHPO4.2H2O].NaHF2 [0-10% wt% of powder phase] has been dissolved in double distilled water and used as th...
متن کاملPhosphorous availability influences the dissolution of apatite by soil fungi
Apatite (Ca 10 (PO 4 ) 6 (OH,F,Cl) 2 ) is the primary inorganic source of phosphorus in the biosphere. Soil fungi are known to increase plant-available phosphorus by promoting dissolution of various phosphate minerals. Yet no apatite dissolution studies exist using fungi as weathering agents, and regulation of fungal weathering activity in response to different levels of phosphorus availability...
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ژورنال
عنوان ژورنال: Ocean Science
سال: 2014
ISSN: 1812-0792
DOI: 10.5194/os-10-571-2014