摘要：羟基磷灰石(hydroxyapatite，简称HA或HAP)是动物与人体骨骼的主要无机成分，具有良好的生物活性和生物相容性[1]，且HAP无毒、无致癌、无副作用，因此广泛应用于医学。本文主要介绍羟基磷灰石的制备方法、表征、性能，以理论为基础，结合实验图表与数据进行比较分析。采用共沉淀法,以Ca(NO3)2·4H2O、(NH4)2HPO4分别为钙、磷源,用氨水调控溶液酸碱度合成了HA晶体，采用XRD、IR对所得HAP进行了表征，研究羟基磷灰石的吸附作用。

关键词：羟基磷灰石；共沉淀法；吸附作用

Abstract：Hydroxyapatite is the main inorganic constituents of animal and human bones, with well bioactivity and biocompatibility, and HAP is non-toxic, non-carcinogenic and no side effects, it is widely used in medical. This paper describes the hydroxyapatite`s preparation methods, characterization and performance, theory based on experimental charts and data for comparative analysis. Coprecipitation, Ca (NO3)2• 4H2O﹑(NH4)2HPO4 were calcium, phosphorus source, the HA crystals synthesized with ammonia regulation of solution pH, income HAP were characterized by XRD、IR, research hydroxy apatite adsorption.

Keywords：Hydroxyapatite；coprecipitation；adsorption