A Discussion of Asbestos Detection Techniques for Air and Soil

0,23
MB

40
stron

2111
ID UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

2004
rok

CONTENTS

INTRODUCTION 1

BACKGROUND 1

ASBESTOS MINERAL TYPES 1

THE HEALTH EFFECTS OF ASBESTOS 3

The Toxicity of Asbestos Fibers 4

Asbestos Regulations 6

Asbestos Counting Methods 7

Phase Contrast Microscopy Counting Method 7

AHERA Counting Method 8

PCM-Equivalent Counting Method 9

ISO 10312 Counting Method 9

ASBESTOS DETECTION TECHNIQUES 10

Asbestos in Air 10

Phase Contrast Microscopy 11

Transmission Electron Microscopy 13

Scanning Electron Microscopy 21

Asbestos in Soil 22

Polarized Light Microscopy 22

Transmission Electron Microscopy 25

Scanning Electron Microscopy 28

CONCLUSION 29

RECOMMENDATIONS 30

REFERENCES 31

NOTES 35