Misra D N
Calcif Tissue Int. 1986 Jun;38(6):333-8. doi: 10.1007/BF02555746.
Adsorption of water was studied gravimetrically at 23 degrees C in an open system at several relative humidities on a variety of apatitic calcium phosphates including enamel, deproteinized enamel, and bone mineral. The amount of adsorbed water increases linearly with the surface areas of the synthetic apatites and does not appear very sensitive to calcium to phosphorus ratio of the apatites. The adsorption results correlate very well up to about two monolayers with a conventionally determined isotherm. Higher uptake of water even by "deproteinized" enamel or bone may be due to the presence of pore structure and incompletely removed organic matter.
在开放系统中，于23摄氏度下，在几种相对湿度条件下，采用重量法研究了水在多种磷灰石型磷酸钙（包括牙釉质、脱蛋白牙釉质和骨矿物质）上的吸附情况。吸附水的量随合成磷灰石的表面积呈线性增加，并且对磷灰石的钙磷比似乎不太敏感。在大约两个单分子层之前，吸附结果与传统测定的等温线非常吻合。即使是“脱蛋白”的牙釉质或骨骼对水的更高吸附量，可能是由于存在孔隙结构和未完全去除的有机物。
