HYDROXYL CONTENT OF SOLUTION-PRECIPITATED CALCIUM PHOSPHATES

被引:23
作者
MEYER, JL
机构
[1] Laboratory of Biological Structure, National Institute of Dental Research, National Institutes of Health, Bethesda, 20014, Maryland, Building 30
关键词
Hydroxide; Hydroxyapatite; Precipitation; Thermodynamics; Titration;
D O I
10.1007/BF02441178
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
A method is described for determination of the titratable hydroxide ion in calcium phosphate precipitates. The procedure requires accurate analysis of the other titratable species in the crystal lattice but is unaffected by the presence of other lattice constituents or impurities. The method was applied to precipitates that had been previously analyzed by solution thermodynamic techniques, and the results were consistent with the earlier observations. The hydroxide content of the precipitates increased with crystal maturity and with increasing pH of the precipitation medium. The hydroxide content of the amorphous phase and the immediate post-amorphous-crystalline transformation phase was shown to be nearly zero. After 3 to 4 days' maturation, the hydroxide content of precipitates prepared at pH values of 7, 8, and 9 was shown to increase to approximately 23, 40, 56% of that required for pure hydroxyapatite. © 1979 Springer-Verlag.
引用
收藏
页码:153 / 160
页数:8
相关论文
共 33 条
[1]   THE NATURE OF PRECIPITATED CALCIUM PHOSPHATES [J].
ARNOLD, PW .
TRANSACTIONS OF THE FARADAY SOCIETY, 1950, 46 (12) :1061-1072
[2]   1ST DISSOCIATION CONSTANT OF PHOSPHORIC ACID FROM 0-DEGREES-C TO 60-DEGREES-C - LIMITATIONS OF THE ELECTROMOTIVE FORCE METHOD FOR MODERATELY STRONG ACIDS [J].
BATES, RG .
JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, 1951, 47 (03) :127-134
[3]   H values of certain phosphate-chloride mixtures, and the second dissociation constant of phosphoric acid from 0 degrees to 60 degrees C [J].
Bates, RG ;
Acree, SF .
JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, 1943, 30 (02) :129-155
[4]  
BERRY EE, 1968, B SOC CHIM FR, P1765
[5]   STRUCTURE AND COMPOSITION OF SOME CALCIUM-DEFICIENT APATITES .2. [J].
BERRY, EE .
JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1967, 29 (07) :1585-+
[6]   STRUCTURE AND COMPOSITION OF SOME CALCIUM-DEFICIENT APATITES [J].
BERRY, EE .
JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1967, 29 (02) :317-+
[7]   STUDIES OF HYDROGEN HELD BY SOLIDS .12. HYDROXYAPATITE CATALYSTS [J].
BETT, JAS ;
CHRISTNER, LG ;
HALL, WK .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1967, 89 (22) :5535-+
[8]  
Bevington P.R., 1969, DATA REDUCTION ERROR, P56
[9]   HYDROXYL CONTENT OF CALCIFIED TISSUE MINERAL - LETTER TO EDITORS AND READERS OF CALCIFIED TISSUE RESEARCH [J].
BILTZ, RM ;
PELLEGRINO, ED .
CALCIFIED TISSUE RESEARCH, 1971, 7 (03) :259-+
[10]   HYDROXYAPATITE - MECHANISM OF FORMATION AND PROPERTIES [J].
BLUMENTHAL, NC ;
POSNER, AS .
CALCIFIED TISSUE RESEARCH, 1973, 13 (03) :235-243