Solubility of calcium phosphates.

Solubility of calcium phosphates.
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DOI:
10.1159/000061650
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发表时间:
2001
影响因子:
--
通讯作者:
L. Chow
L. Chow
中科院分区:
--
文献类型:
--
作者:
L. Chow

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溶解度是磷酸钙盐最重要的性质之一。正是溶解度决定了许多涉及磷酸钙的反应的方向,如溶解、沉淀、水解和相变。磷酸钙溶解度在涉及硬组织的形成和再吸收以及病理性钙化的生物过程中也起主要作用。本章将集中于有助于更好地理解磷酸钙的溶解度行为的概念,而不是提供文献综述,这在别处已经给出[Ellot. 1994年]。溶解性修道院通常描述为能溶解于溶液的单位体积中的固体的量。Fclr磷酸钙,这个数量经常随着pH值和酸和碱(如HCl和NaOH)浓度的变化而变化几个数量级。因此,表面上。溶解度可能看起来是这些溶液参数的复杂函数。然而,通过了解固溶平衡的基本原理,可以更清楚地了解磷酸钙的溶解度特性。
Solubil ity is one of the most important properties of calcium phosphate salts. It is the solubil ity that determines the direction of many reactions that involve calcium phosphates such as dissolution, precipitation, hydrolysis, and phase transformation. Calcium phosphate solubil ity also plays a maior role in biological processes that involve formation and resorption ol' hard tissues as well as pathological calcif ications. This chapter wil l focus on concepts that would aid in gaining a better understanding of the solubil ity behavior of calcium phosphzrtes, rather than provide a survey of the l iterature, which has been g iven e lsewhere [El l io t . 1994] . Solubi l i ty is convent ional ly descr ibcd ns the nmount of a sol id that can d isst> lve in to a uni t vo lume of solution. Fclr calcium phosphates, this quantity often changes by several orders of magnitucle with changes in the pH and concentrations of acids and bases, such as HCI and NaOH. Thus, on the surface. the solubil ity may appear to be a complex function of these solution parameters. However, a clearer picture o1 the solubil ity properties for calcium phosphates can be gainecl by understanding the basic principles governing the solid-solution equil ibrium.