Polyisocyanates in occupational environments: a critical review of exposure limits and metrics.
Am J Ind Med
; 46(5): 480-91, 2004 Nov.
Article
en En
| MEDLINE
| ID: mdl-15490474
ABSTRACT
BACKGROUND:
Determination of polyisocyanates is important because they are a major contributor of exposure to the isocyanate functional group in many workplace environments and are capable of inducing sensitization and asthma. However, with multiple different measurement metrics in use, comparison of isocyanate exposure data between studies and development of occupational exposure limits (OELs) for polyisocyanates is difficult.METHODS:
An analysis of existing problems in the measurement and regulation of isocyanates is presented based on the published analytical, toxicological, and regulatory literature, and the authors' own analytical data and experience with isocyanates.RESULTS:
This analysis supports a need for standardization of isocyanate measurement metrics and provides a framework for the development of an OEL for polyisocyanates.CONCLUSIONS:
The total isocyanate group (microg NCO/m(3)) is recommended as the most feasible and practical metric (unit) by which to express polyisocyanate exposures for research, control, and regulatory purposes. The establishment of a comprehensive isocyanate OEL that simplifies the current agent-by-agent approach and expands coverage to polyisocyanates is also recommended.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Exposición Profesional
/
Isocianatos
/
Contaminantes Ocupacionales del Aire
Tipo de estudio:
Etiology_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Am J Ind Med
Año:
2004
Tipo del documento:
Article
País de afiliación:
Estados Unidos