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| Titel: |
Trichloroethylene Carcinogenic Potency |
| Auteur: |
Willhite, Calvin C. |
| Verschenen in: |
Human and ecological risk assessment |
| Paginering: | Jaargang 7 (2001) nr. 4 pagina's 767-777 |
| Jaar: |
2001-06-01 |
| Inhoud: |
Mention of tradename, specific equipment, or proprietary product does not constitute a guarantee or warranty by the State of California or imply approval to the exclusion of other products. The conclusions reached herein represent those of the author and do not necessarily represent those of the State of California. Current U.S. regulatory policy regarding the carcinogenic potential of trichloroethylene (TCE) in humans is conflicting. Weight-of-evidence considerations show either no or inconsistent associations between chronic TCE exposure and excess human cancer risk. Occupational exposure limits are so great (538,000 µg/m3) that daily absorbed doses are greater than the rodent no observed adverse effect level (NOAEL). Using the regulatory strength-of-evidence approach, recommended ambient air concentration limits (1.1 µg/m3) are derived using the default linearized multistage model. The latter assumes a radiomimetic mode of action, a highly questionable assumption in light of published TCE mechanism of action data. Given the current state of U.S. regulatory policy on this material, credible analyses of the data are needed from neutral nongovernmental organizations. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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