海水鱸魚鱗片及鰭骨中羥基磷灰石的X射線極圖法和ODF法擇優取向分析

苑蕾; 王河錦; 安佳麗; 張楠; 王冠玉

doi:10.13374/j.issn2095-9389.2017.11.002

海水鱸魚鱗片及鰭骨中羥基磷灰石的X射線極圖法和ODF法擇優取向分析

doi: 10.13374/j.issn2095-9389.2017.11.002

苑蕾^1,2,
王河錦^1,2, ,,
安佳麗^1,2,
張楠^1,2,
王冠玉^1,2

1) 北京大學地球與空間科學學院, 北京 100871
2) 教育部“造山帶與地殼演化”重點實驗室, 北京 100871

基金項目:

國家自然科學基金資助項目(41372061,40972038)

詳細信息

中圖分類號: O722;P578.92⁺2;TB321
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出版歷程
- 收稿日期: 2017-01-12

Preferred orientation of hydroxylapatite in the scales and fins of seawater Lateolabrax japonicus determined using XRD pole figures and ODF

YUAN Lei^1,2,
WANG He-jin^{1,2
, ,},
AN Jia-li^1,2,
ZHANG Nan^1,2,
WANG Guan-yu^1,2

1) School of Earth and Space Sciences, Peking University, Beijing 100871, China
2) Key Laboratory of Orogenic Belt and Crustal Evolution, Ministry of Education, Beijing 100871, China

摘要

摘要: 采用X射線衍射采集海水鱸魚鱗片中羥基磷灰石(002)、(130)、(211)面網和鰭骨中羥基磷灰石(031)、(120)、(132)面網極圖數據并計算了取向分布函數(ODF)以分析其擇優取向特征,其中鱗片極圖數據顯示出羥基磷灰石結晶學c軸主要有3個擇優取向,分別是與鱗片法線方向平行、相交39°和相交63°,而鰭骨極圖推測出其羥基磷灰石c軸擇優取向大致有五個方向,分別與鰭骨截面法線相交3°、9°、17°、24°和36°.ODF的計算結果表明,鱗片中羥基磷灰石有比較明顯的擇優取向是結晶學c軸近似平行于鱗片表面,同樣,鰭骨ODF中羥基磷灰石擇優取向為結晶學c軸近垂直于截面.極圖和ODF結果上的差別是由于極圖本身是晶體取向的二維投影圖,單張極圖顯示的擇優信息不夠完整,因此ODF用來解析生物礦物的擇優取向特征更為準確.鱗片和鰭骨中羥基磷灰石結構中的擇優取向現象是因為生物礦化過程中有機質的調控作用而使結晶學c軸趨向平行膠原纖維長軸方向,并且這種擇優特征也是硬體組織具有優良力學性能的要求.
- 羥基磷灰石 /
- X射線極圖 /
- 取向分布函數 /
- 擇優取向 /
- 生物調控
Abstract: Pole figures measured using X-ray diffractometry were used to analyze the orientation of crystalline hydroxylapatite (HAP) in the scales and fins of seawater Lateolabrax japonicus. An orientation distribution function (ODF) was calculated based on the pole figures of the lattice planes (002),(130), and (211) of HAP in the scales and those of (031),(120), and (132) in the fins. The pole figures indicate that the c-axis of HAP prefers three primary orientations in the scales and five primary orientations in the fins. In the scales, the preferred orientations of the HAP c-axis are parallel to the normal line of the scale face and intersect the normal line at about 39° and 63°. In the fins, the HAP c-axis intersects the normal line of the cross-section at 3°, 9°, 17°, 24°, and 36°. However, the calculated ODFs show that the preferred orientations of the HAP c-axes are nearly parallel to the face of the scales and perpendicular to the cross-section of the fins. As the pole figure only reflects a two-dimensional projection of the crystalline orientations, the preferred orientations determined by the pole figures are not very accurate. Conversely, three-dimensional ODF is more suitable for analyzing the preferred orientation of biominerals than the two-dimensional projection. The tendency of the c-axis to be parallel to the collagen fibers is controlled by organic matter and provides a good mechanical performance in hard tissue.
- hydroxylapatite /
- XRD pole figure /
- three-dimensional orientation distribution function /
- preferring orientation /
- biological control

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