Calcium hydroxyapatite

The value of for calcium hydroxyapatite can be defined by charge of Ca + and PO ions. From this point of view calcium hydroxyapatite can be used as high-selective adsorbents for high performance liquid chromatography because with increasing of will be rise a selectivity coefficient a. [Pg.138]

Arends, J., J. Christoffersen, M. R. Christoffersen, H. Eckert, B. O. Fowler, J. C. Heughebaert, G. H. Nancollas, J. P. Yesinowski, and S. J. Zawacki (1987), "A Calcium Hydroxyapatite Precipitated from an Aqueous Solution An International Multimethod Analysis", J. Crystal Growths4, 515-532. [Pg.397]

M.R. Christoffersen, J. Christoffersen, J. Arends, Kinetics of dissolution of calcium hydroxyapatite. VII. The effect of fluoride, J. Cryst. Growth 67 (1984) 107-114. [Pg.328]

Christoffersen, J., Christoffersen, M. R., Larsen, R., Rostrup, E., Tingsgaard, P., Andersen, O. Grandjean, P. 1988. Interaction of cadmium ions with calcium hydroxyapatite crystals a possible mechanism contributing to the pathogenesis of cadmium-induced bone diseases. Calcified Tissue International, 42, 331 -339. [Pg.468]

Fedoroff, M., Jeanjean, J., Rouchaud, J. C., Mazerolles, L., Trocellier, P., Maireles-Torres, P. Jones, D. J. 1999. Sorption kinetics and diffusion of cadmium in calcium hydroxyapatites. Solid State Sciences, 1, 71-84. [Pg.469]

Jeanjean, J., McGrellis, S., Rouchard, J. C., Fedoroff, M., Rondeau, A., Perochf.au, S. Dub is, A. 1996. A crystallographic study of the sorption of cadmium on calcium hydroxyapatites incidence of cationic vacancies. Journal of Solid State Chemistry, 126, 195-201. [Pg.469]

Mandjiny, S., Matis, K. A. et al. 1998. Calcium hydroxyapatites evaluation of sorption properties for cadmium ions in aqueous solution. Journal of Materials Science, 33, 5433-5439. [Pg.471]

Pujari, M. Patel, P. N. 1989. Strontium-copper-calcium hydroxyapatite solid solutions preparation, infrared, and lattice constant measurements. Journal of Solid State Chemistry, 83, 100-104. [Pg.472]

Vega, E. D., Pedregosa, J. C. Narda, G. E. 1999. Interaction of oxyvanadium (IV) with crystalline calcium hydroxyapatite surface mechanism with no structural modification. Journal of Physics and Chemistry of Solids, 60, 759-766. [Pg.473]

The potential of other nuclei for the study of surfaces is yet to be explored. Gottlieb and Luz (388) measured 2H spectra of a number of perdeuterated molecules adsorbed on active alumina and interpreted the results in terms of quadrupolar tensors. Yesinowski and Mobley (369) have shown that 19F MAS NMR can provide useful information about fluorinated surfaces of calcium hydroxyapatite, Cas(0H)(P04)3. In particular, l9F, 2H, and H MAS NMR may become powerful techniques for the study of interface systems in general. [Pg.327]

The primary purpose of phosphate addition is to precipitate the hardness constituents. The calcium reacts with phosphate under the proper pH conditions to precipitate calcium phosphate as calcium hydroxyapatite, Cain(P04)fi(0H)2. This is a flocculent precipitate that tends to be less adherent to boiler surfaces than simple tricalcium phosphate, which is... [Pg.1743]

FrancjS m D. The inhibition of calcium hydroxyapatite crystal growth by polyphos-phonates and polyphosphates. Calc. Tiss. Res. 3, 151 — 162 (1969). [Pg.109]

The research in this area builds on the earlier work of Haka et al. [57] who found that excised calcifications can be classified into two groups using Raman spectroscopy type I - calcium oxalate dihydrate (cod) and type II - calcium hydroxyapatite (hap). Calcium oxalate crystals are mainly found in benign ductal cysts while calcium hydroxyapatite is found in both carcinoma and in benign breast tissue the chemical specificity of Raman spectroscopy identifies... [Pg.61]

Fig. 13.11. Raman spectra of (a) type I calcium oxalate, (b) type II calcium hyroxyapatite and (c) type II carbonate-substituted calcium hydroxyapatite...

Roy, D. M., Eysel, W. and Dinger, D. (1974). Hydrothermal Synthesis of various carbonate containing calcium hydroxyapatite. Mater. Res. Bull., (9) 35-40. [Pg.353]

Methods for the synthesis of calcium hydroxyapatite have been reported in the past,1,2 but all of them produced either poorly crystallized or somewhat impure products. The following procedure produces a very well-crystallized compound which has a high degree of purity. The reaction is simply the hydrolysis of calcium monohydrogen phosphate to hydroxyapatite in a closed system. The major disadvantage is the small amount of material obtained from each hydrolysis because of the small capacity of the bombs used. Larger reaction vessels would minimize this objection. [Pg.16]

Tricalcium Phosphate Precipitated Calcium Phosphate Calcium Hydroxyapatite... [Pg.77]

Calcium Gluconate, 60 Calcium Glycerophosphate, 60 Calcium Hydroxide, 61 Calcium Hydroxide TS, 850 Calcium Hydroxyapatite, 69, (Sl)10 Calcium Identification Test, 753 Calcium Iodate, 62 Calcium Lactate, 62 Calcium Lactobionate, 63 Calcium Lignosulfonate, (S 1)7 Calcium Oxide, 64 Calcium Pantothenate, 64 D-Calcium Pantothenate, 64 Calcium Pantothenate, Calcium Chloride Double Salt, 66 Calcium Pantothenate, Racemic, 65 Calcium Peroxide, 67 Calcium Phosphate, Dibasic, 67, (Sl)8 Calcium Phosphate, Monobasic, 68,... [Pg.120]

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