Adsorption of some essential amino acids on hydroxyapatite

被引：65

作者：

El Shafei, GMS ^{[1
]}

Moussa, NA ^{[1
]}

机构：

[1] Ain Shams Univ, Fac Sci, Dept Chem, Cairo, Egypt

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2001年 / 238卷 / 01期

关键词：

essential amino acids; hydroxyapatite; adsorption;

D O I：

10.1006/jcis.2001.7474

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Samples of synthetic hydroxyapatite, Ca-10(PO4)(6)(OH)(2), obtained by wet method and calcined at 1173 K in air were used in an adsorption study of some essential amino acids, mainly histidine, methionine, and tryptophan. Adsorption isotherms were obtained using aqueous solutions of concentration range 2.7 x 10(-2)-1.3 x 10(-3) M at 303, 318, and 343 K, under near neutral conditions. The mode of adsorption was studied using IR spectroscopy. The results are discussed in terms of the dependence of the adsorption process both on the functional groups on the hydroxyapatite and on the solution chemistry of the aqueous amino acids solutions. (C) 2001 Academic Press.

引用

页码：160 / 166

页数：7

共 26 条

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