Measurement of Fibers

By Baron, Paul A.

Book Id: WPLBN0000068032
Format Type: PDF eBook:
File Size: 0.1 MB
Reproduction Date: 2005

Title:	Measurement of Fibers
Author:	Baron, Paul A.
Volume:
Language:	English
Subject:	Health., Medical research, Medical reports
Collections:	Medical Library Collection
Historic Publication Date:
Publisher:	Centers for Disease Control and Prevention


Citation APA MLA Chicago A. Baro, B. P. (n.d.). Measurement of Fibers. Retrieved from http://gutenberg.cc/

Excerpt
INTRODUCTION: Fiber-related disease has provided much of the impetus for fiber research in recent years. Asbestos has been the fiber type most commonly associated with disease. The name “asbestos” is a commercial term applied to the fibrous forms of several minerals that have been used for similar purposes and includes chrysotile, amosite, crocidolite, and the fibrous forms of tremolite, anthophyllite, and actinolite. The three primary diseases associated with asbestos exposure are asbestosis, the result of inflammation and collagen formation in lung tissue; lung cancer; and mesothelioma, an otherwise rare form of cancer associated with the lining surrounding the lungs. A current theory describing the toxicity of fibers indicates that fiber dose, fiber dimension, and fiber durability in lung fluid are the three primary factors determining fiber toxicity [2].

Table of Contents
CONTENTS: PAGE 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 2. Fiber Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 3. Phase Contrasting Light Microscope Counting (PCM) . . . . . . . . . . . . . . . . . . . . . 145 a. Microscope-related parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 b. Sample preparation techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 c. Quality assurance schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 d. Qualitative fiber analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 e. Sampling volume for asbestos abatement applications . . . . . . . . . . . . . . . . . 149 f. Other techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 4. Polarizing Light Microscopy (PLM) of Bulk Materials . . . . . . . . . . . . . . . . . . . . . . 151 a. Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 b. Sample preparation and analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 c. Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 5. Electron Microscopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 6. Scanning Electron Microscopy (SEM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 7. Transmission Electron Microscopy (TEM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 8. Optical Detection (Light Scattering) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 9. Fiber Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 10. Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 11. Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 12. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161