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[Quantitative determination of asbestos in bulk samples]
1Laboratorio di Ultrastrutture, Istituto Superiore di Sanità, Roma.
Annali Dell'Istituto Superiore Di Sanita
|January 1, 1994
Summary
Accurate asbestos determination in bulk samples remains challenging. The Istituto Superiore di Sanità uses X-ray diffractometry (XRD) for high concentrations and scanning electron microscopy (SEM) for lower levels.
Area of Science:
- Analytical Chemistry
- Materials Science
- Environmental Science
Context:
- Bulk sample analysis presents significant challenges for accurate asbestos quantification.
- Existing analytical methods often fall short of satisfactory performance for asbestos determination.
- Standardization of asbestos detection methods is crucial for public health and safety.
Purpose:
- To discuss the general problems associated with asbestos determination in bulk samples.
- To present the analytical approach developed by the Istituto Superiore di Sanità (National Health Institute).
- To detail and discuss the specific analytical procedures employed for asbestos quantification.
Summary:
- The study highlights the difficulties in reliably determining asbestos content in bulk materials.
- It introduces a dual analytical strategy: X-ray diffractometry (XRD) with a silver filter for asbestos concentrations >= 1% (w/w).
- Scanning electron microscopy (SEM) is utilized for detecting asbestos concentrations below 1%.
Impact:
- Provides a practical, two-tiered analytical framework for asbestos determination.
- Aims to improve the accuracy and reliability of asbestos testing in bulk samples.
- Contributes to better risk assessment and management of asbestos-containing materials.