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Evaluation of Asbestos Exposure Associated with Research Laboratories

Occupational Diseases and Environmental Medicine 2019年第1期7卷 13-20页

作者： Ediberto Garcia Daniel Newfang Jayme Coyle Giffe T. Johnson Raymond D. Harbison Center for Environmental and Occupational Risk Analysis and Management College of Public Health University of South Florida Tampa FL USA

Asbestos containing materials (ACM) have been used for decades in research laboratory products including gloves, tong sleeves, transite board, and other materials. These materials typically contain chrysotile asbestos with concentrations ranging up to 80%. The objective of this research was to evaluate asbestos exposure from gloves, tong sleeves, and transite board with simulated laboratory use. An environmental chamber was used to simulate laboratory application of the products. Bulk samples of various products were tested before and after use. Personal breathing zone air samples as well as one cumulative air sample were collected during testing and followed the National Institute for Occupational Safety and Health (NIOSH) 7400/7402 methodologies. Phase contrast microscopy (PCM) and transmission electron microscopy (TEM) were used for sample analyses. Analysis of air samples using PCM, showed airborne fiber concentrations as high as 0.058 f/cc during use of tongs fitted with asbestos sleeves. Further analysis using TEM showed that the highest airborne fiber concentration was 0.0036 f/cc. Manipulation of transite board resulted in 8-hour time-weighted-average (TWA) asbestos levels as high as 0.02 f/cc. Testing of various asbestos containing materials used in research laboratories indicate low potential for asbestos fiber exposures.

关键词： Asbestos Exposure Research Laboratories transite Board Tong Sleeves Gloves Chrysotile Asbestos Laboratory Products Asbestos-Related Disease Asbestos-Containing Material

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