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[Diffractometric analysis of non-pulverized coherent materials]
1Istituto di Medicina del Lavoro, Università degli Studi di Milano.
La Medicina Del Lavoro
|July 1, 1992
Summary
This study explored X-ray diffraction (XRD) on intact materials like asbestos-cement to boost signal intensity. While effective for qualitative analysis, quantitative improvements varied, limiting sensitivity gains in certain material structures.
Area of Science:
- Materials Science
- Analytical Chemistry
- Mineralogy
Background:
- X-ray diffraction (XRD) is crucial for material analysis.
- Fine grinding can degrade crystallinity, impacting quantitative XRD results.
- Simultaneous presence of materials with different mechanical properties exacerbates crystallinity loss.
Purpose of the Study:
- To evaluate diffractometric assays on intact, coherent materials.
- To assess methods for increasing diffracted intensities without fine grinding.
- To avoid loss of crystallinity in complex material samples.
Main Methods:
- Utilized X-ray beam on glossy sections of materials (asbestos-cement, insulation panels, ceramic tiles).
- Performed diffractometric assays on samples with high mass concentration.
- Compared results with fine-ground samples to assess crystallinity preservation.
Main Results:
- The method proved valid for qualitative analysis.
- Diffracted intensities increased by up to 40% in quantitative assays.
- Intensity increases were not consistently correlated with material type or structure.
- The technique showed variable effectiveness in enhancing sensitivity.
Conclusions:
- The diffractometric assay on intact materials is a valid qualitative tool.
- Quantitative improvements in diffracted intensity are achievable but inconsistent.
- The method's ability to increase sensitivity is case-dependent.
- Further research is needed to optimize quantitative analysis for diverse materials.