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Base de datos CISDOC

ID (ISN) del documento53687
Número CIS 90-534
ISSN - Título de la serie 0003-4878 - Annals of Occupational Hygiene
Año 1989
Número de serie
Autor(es) Huynh C.K., Vu Duc T., Savolainen H.
Título Controlled dynamic generation of standard 1,6-hexamethylene diisocyanate aerosols
Información bibliográfica 1989, Vol.33, No.4, p.573-581. Illus. 9 ref.
Resumen A procedure for the dynamic generation of 1,6-hexamethylene diisocyanate (HDI) aerosol atmospheres of 70µg m-3 to 1.75mg m-3 based on the precise control of the evaporation of pure liquid HDI and subsequent dilution with air, was developed. The apparatus consisted of a home-made glass nebuliser coupled with a separation stage to exclude non-respirable droplets (>10µm). The aerosol concentrations were achieved by passing air through the nebuliser at 1.5-4.5 L.min-1 to generate dynamically 0.01-0.25ppm of diisocyanate in an experimental chamber of 8.55m3. The distribution of the liquid aerosol was established with an optical counter and the diisocyanate concentration was determined from samples collected in impingers by a high-pressure liquid chromatographic method. The atmospheres generated were suitable for the evaluation both of sampling procedures full scale, and of analytical methods: at 140µg m-3 (0.02ppm) they remained stable for 15min provocation tests in clinical asthma, as verified by breath-zone sampling of exposed patients.
Descriptores (primarios) diisocianato de hexametileno; evaporación; aerosoles; líquidos
Descriptores (secundarios) muestreo por el impactador; cromatografía en fase liquida a alta presión; descripción del procedimiento
Tipo de documento D - Artículos periódicos
Tema(s) Polvos, aerosoles
Broad subject area(s) Riesgos químicos
Navegación por categoria(s) Isocyanates
Cyano compounds