Modeling of Hexamethylene Diisocyanate and Psychrometric Parameters in Polyurethane Factories
Author Information
Author(s): Mirmohammadi Mirtaghi, Ibrahim M. H. Saraji
Primary Institution: Mazandaran University of Medical Sciences
Hypothesis
How does the HDI concentration change with respect to psychrometric and factory factors?
Conclusion
The study found that indoor air relative humidity and temperature significantly contribute to the variability of HDI concentration in polyurethane factories.
Supporting Evidence
- There was a significant correlation between HDI concentration and relative humidity and dry bulb temperature.
- The mean HDI concentration was 78.8 µg/m3, which exceeds the NIOSH exposure limit of 35 µg/m3.
- Multiple linear regression analysis indicated that relative humidity and dry bulb temperature are significant predictors of HDI concentration.
Takeaway
This study shows that the humidity and temperature inside factories can affect the amount of harmful chemicals in the air.
Methodology
Air samples were collected using midget impingers and analyzed for HDI concentration in relation to psychrometric parameters.
Limitations
The study may not account for all factors affecting HDI concentration and is based on a limited number of factories.
Participant Demographics
450 workers in HDI factories and 200 unexposed office workers.
Statistical Information
P-Value
0.0001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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