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$X-ray Diffraction of Biological Samples$ 01:10

X-ray Diffraction of Biological Samples

X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...

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Author Spotlight: Advanced Techniques for Characterizing Tissue Mineralization in Bone Regeneration Research

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Ivory vs. osseous ivory substitutes-Non-invasive diffractometric discrimination.

H Hoelzig¹, T Muenster¹, S Blanke¹

¹Institute of Mineralogy, Crystallography and Materials Science, Leipzig University, Germany.

Forensic Science International

|February 2, 2020

Summary

This summary is machine-generated.

This study introduces a non-invasive X-ray diffraction method to distinguish between bone, antler, and ivory. Analyzing apatite crystal orientation patterns effectively identifies these bioapatite materials.

Keywords:

Antler Apatite Bone Diffractometry Elephant Ivory

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$Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples$

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

Area of Science:

Materials Science
Biomaterials Analysis
Analytical Chemistry

Background:

Bioapatite materials like bone, antler, and ivory are crucial in various fields, including archaeology and paleontology.
Accurate material identification is essential for conservation and provenance studies.
Existing methods for distinguishing these materials can be invasive or lack specificity.

Purpose of the Study:

To develop a novel, non-invasive method for discriminating between bone, antler, and ivory.
To utilize X-ray diffractometry (XRD) for material identification based on apatite crystal orientation.
To provide a complementary technique to existing analytical approaches.

Main Methods:

Non-invasive X-ray diffractometry (XRD) was employed.
Analysis focused on peak intensity ratios, particularly the 002/310 apatite reflections.
Kernel density estimation (KDE) visualized characteristic data point patterns for each material.

Main Results:

Distinctive patterns of intensity ratio dispersion were observed for bone, antler, and ivory.
These patterns correlate with differences in collagen fiber arrangement and apatite crystal orientation.
The method successfully discriminated between the three bioapatite materials in 88 analyzed objects.

Conclusions:

The developed XRD method offers a reliable and non-invasive approach for bioapatite material identification.
Apatite crystal orientation analysis provides a characteristic fingerprint for bone, antler, and ivory.
This technique enhances existing analytical methods for valuable object analysis.