||Advances in the Measurement of Ambient Carbon Fibers.
Loo, B. W. ;
Adler, T. C. ;
Goulding, F. S. ;
Landis, D. A. ;
Madden, N. W. ;
||California Univ., Berkeley. Lawrence Berkeley Lab.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Fiber composites ;
Air pollution ;
Carbon fibers ;
Industrial hygiene ;
Measuring instruments ;
Design criteria ;
Performance evaluation ;
Occupational safety and health ;
Indoor air pollution
||Some EPA libraries have a fiche copy filed under the call number shown.
||Methodologies that have been used in a number of passive collectors and active detectors for measuring ambient carbon fibers are summarized. The need for improved performance in terms of specificity, sensitivity, detection efficiency, accuracy, precision, speed, stability and serviceability have been identified. The design principles for a new detector based on the technique of measuring the induced charge acquired by a conducting fiber in an electric field have been discussed in detail. A prototype of such a detector has been tested to cover the measurement of fiber length distributions between 0.08 mm and 9 mm, and fiber concentrations between 1-1,000,000 fibers/cu m of air. The precision of the instrument has been demonstrated to be about 2% for fibers in the 1-9 mm range and approaching one fiber diameter (or 10 micrometers) for the submillimeter fibers.
||Pub. in Aerosol Science and Technology 3, p31-38 Mar 84.
|NTIS Title Notes
||Reprint: Advances in the Measurement of Ambient Carbon Fibers.
|PUB Date Free Form
||14B; 11D; 6J; 68A; 71F; 41K; 94D; 41I; 68A; 57U
||Not available NTIS