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Exposure to Methylene Diphenyl Diisocyante (MDI) among polyurethane roof workers
A cross-sectional study was done to evaluate the association
Analytical Method 47 for Methylerie Diphenyl Diisocyanate.
audit of the company's work practices and safety program.
below the exposure limits established for MDI. Measurements
between methylene diphenyl diisocyanate (MDI) exposure and
between respiratory problems and work history only. Analysis
by personal air samples. Samples were collected by drawing a
by the spray application of polyurethane foam were measured
corrects leaking and humidity problems by means of
exposure limit as a ceiling value. Personal interviews showed
filter, contained in an open-face cassette, using OSHA
health symptoms of the employees served as the basis of an
known volume of air through an impregnated glass fiber
met both the 8-hr time weight average and permissible
no association between exposure to low levels of MDI and
of the cassette filters showed that all the samples were
opportunity to improve occupational hygiene by providing the
permissible exposure limits for MDI. Both the monitoring and
polyurethane roof insulation. Concentrations of MDI produced
questionnaire initially designed to evaluate the association
respiratory symptoms. Their results reflected the
respiratory system deterioration among permanent male
The collected concentration samples were compared to the
The health symptoms were assessed using a health
workers with personal protective equipment and standardizing
workers. The studied company, located in Puerto Rico,
Issued also on microfiche from Lange Micrographics.