AWS LVOS : 1983

LAB VALIDATION OF OZONE SAMPLING WITH SPILL PROOF IMPINGERS

American Welding Society

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Personnel
Acknowledgements
Abstract
I. Background and Research Approach
A. Background
B. Research Approach
1. Purpose and General Considerations
2. Literature Search
3. Protocol
II. Construction and Evaluation of an Ozone Test Atmosphere
    Generator
A. Construction of the Generator
B. Evaluation of the System
III. Development of a Prototype Sampler
A. Choice of Candidate Tubing and Filter Materials
B. Screening Tests
1. Evaluation of Tubing
2. Evaluation of Filter Materials
3. Assessment of the Effect of Nitrogen Dioxide and Nitric
   Oxide Upon Ozone Stability Inside Flexible Tubing During
   Sampling
4. Determination of the Effect of High Relative Humidity Upon
   the Transport of Ozone Through a Teflon Filter and
   Bev-A-Line IV Tubing
C. Recommended Sampling Device
IV. Laboratory Evaluation of the Modified Sampling and
    Analytical Method for Ozone
A. Calibration of the AKI Procedure
B. Determination of the Accuracy and Precision of the Developed
   Sampling and Analytical Method
1. Validity of the Reference Analytical Method
2. Accuracy and Precision Tests With Prototype Samplers
C. Determination of the Storability of Impinger Solutions
   Exposed to Ozone
1. Procedure No. 1
2. Procedure No. 2
3. Summary and Conclusions of Storability Tests
V. Initial Field Evaluation of the Prototype Sampler
A. Description of Welding Test Conditions
B. Description of Sample Sets
1. Sample Set No. 1
2. Sample Set No. 2
C. Processing Of Samples
D. Results and Discussion
1. Ozone Determinations
2. Additional Characterization of the Welding Environment
VI. Additional Field Evaluation of the Prototype Sampler
A. Welding Test Conditions
B. Air Sampling and Analytical Procedures
1. Evaluation of the Effects of Fume On Ozone
2. Evaluation of the Developed Personal Sampling Method
C. Results and Discussion
1. Evaluation of the Effects of Fume on Ozone
2. Evaluation of the Developed Personal Sampling Method
VII. Summary and Conclusions
VIII. Acknowledgements
IX. Bibliography
Appendix A: Summary of Statistical Terms and Formulas
Appendix B: Tentative Sampling and Analytical Method for
            Ozone Inside a Welding Helmet
1. Principle of the Method
2. Range and Sensitivity
3. Interferences
4. Accuracy and Precision
5. Advantages and Disadvantages of the Method
6. Apparatus
7. Reagents
8. Procedure
9. Calibration and Standards
10. Calculations
11. References

Abstract

Specifies the adaptation of an existing air sampling and analytical method for ozone to the personal monitoring of employee exposures to the substance inside a welding helmet.