Zobrazeno 1 - 10
of 57
pro vyhledávání: '"D.R. Van Orden"'
Publikováno v:
Regulatory Toxicology and Pharmacology. 80:164-172
A prior report demonstrated an unacceptably low level of accuracy in silica analytical testing, with a general negative bias (i.e., underreporting) although other inaccuracies included false-positive results when analyzing blank filters. The possible
Autor:
Richard J. Lee, A.K. Ranpuria, S. Arlauckas, D.R. Van Orden, Louis Anthony Cox, A.L. Warzel, K.F. Bailey, R.A. Kautz
Publikováno v:
Regulatory Toxicology and Pharmacology. 73:126-136
To determine how reliably commercial laboratories measure crystalline silica concentrations corresponding to OSHA's proposed limits, 105 filters were prepared with known masses of 20, 40, and 80 μg of respirable quartz corresponding to airborne sili
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Autor:
Heather J Avens, D.R. Van Orden, Matthew D Zock, Shannon H. Gaffney, B. Simmons, Jennifer Sahmel, Amy K. Madl, Matthew S. Sanchez, John L. Henshaw, Richard J. Lee, Christy A. Barlow, Dennis J. Paustenbach
Publikováno v:
Risk Analysis. 34:1448-1468
The potential for para-occupational (or take-home) exposures from contaminated clothing has been recognized for the past 60 years. To better characterize the take-home asbestos exposure pathway, a study was performed to measure the relationship betwe
Publikováno v:
Regulatory toxicology and pharmacology : RTP. 83
Publikováno v:
Journal of Occupational and Environmental Hygiene. 7:D65-D68
Publikováno v:
Indoor and Built Environment. 19:286-297
Soil samples from sites around Libby, Montana, where tailings or waste from the vermiculite mine formerly operated by W.R. Grace & Co. were thought to have been deposited, have been tested. The tests examined airborne concentrations of fibre and resp
Publikováno v:
Indoor and Built Environment. 18:531-540
Amphibole asbestos fibers and non-asbestos amphibole particles have been shown to have different size characteristics, in addition to their morphological differences. There is a tendency, however, among laboratories and some regulators to ignore the
Publikováno v:
Indoor and Built Environment. 18:524-530
A detailed evaluation of 122 air samples collected in and around Libby, Montana and previously analyzed by EPA has been performed. Photographic records of each analyzed particle were collected and archived in a searchable database. The results of the
Autor:
Richard J. Lee, M. Ross, Gordon L. Nord, Robert P. Nolan, John Addison, Arthur M. Langer, D.R. Van Orden
Publikováno v:
Regulatory Toxicology and Pharmacology. 52:S26-S30
Fibrous minerals are common in nature but asbestiform minerals are rare. The unique mineralogical characteristic common to all the asbestos minerals is their morphologic form (or habit of crystallization) as polyfilamentous fiber bundles. The individ