| Summary: | Introduction: Isocyanate Compounds NCO groups react easy with biological molecules &
considered to be a powerful respiratory irritant and major cause of asthma, bronchitis chemical.
Studies /investigations have shown that the risk of death from lung cancer is spreading among car
painters. This study aimed to identify amount of worker with Physical contact on reduction of this
contaminant in the work places produces isocyanates are about 3 million tons annually and 280000
workers are in contact with it in America. Extensive research on the 57000 of Painter are shown that
the risk of death from lung cancer is very high among workers of painter. toluene diisocyanate (TDI)
have used as the most important industrial intermediates in industry. The purpose of epidemiological
studies of isocyanate compounds is appointment occupational exposure of workers. In order to
reduce this pollutants in the workplace, the employers must be know the safety rules and use
effectively controls. The purpose of performance of this project is survey impact of control on
reducing the amount of isocyanate in air of workplace.
Method: 10%of car painters were selected in Karaj city, then 58 air samples were collected by using
standard methods. Analysis of samples was performed by HPLC with niosh 5522 method. statistical
analysis was analysis by SPSS software.
Result: Average of age, work history and work history with pain, in a sequence were 36.8, 18.25,
16.65.35.5% were smokers.63.8% of workshop had industrial ventilation. The Pollutant concentration
average MDI, TDI was 7.9 mg/m3 and 1.05 that the highest concentration was related to No 9.
Between smoking and respiratory problem among workers significant relations were found
(p<0./002). In statistical analysis correlation coefficient (0.5) was observed between the temperature
factor and increase HDI concentration pollutant concentration is significant between groups, where as
it is not the same inside groups.
Conclusion: This is correlation between workshop temperature & amount of pollutants and it
increase at the end of the shift. Most of the samples had more concentration then standard. High
concentration of pollutants. Lack of ventilation system in 36% of the workshops & and smoking in
the 35.5% of workers could increase diseases related to compounds isocyanate in future.
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