title: Evaluation of workers' exposure to methylene diphenyl diisocyanate (MDI) in an automobile manufacturing company, Iran.
abstract: Evaluation of personal inhalation exposure to methylene diphenyl diisocyanate (MDI) among 39 employees, working in the window fixation and window glue processes in an automobile manufacturing company was performed. This study was conducted for both case and control groups. After sampling and sample preparation processes, MDI was determined with a UV-VIS spectrophotometer at 590 nm; the lung function was assessed with a digital spirometer, too. The average concentration of MDI in the window fixation, and window glue workplaces were 34.53 and 27.37 micro g/m3, respectively, which was lower than the threshold limit value (TLV) recommended by the American Conference of Governmental Industrial Hygienists (ACGIH) (51 micro g/m3). Respiratory symptoms in the exposed group were significantly different compared to the unexposed group (p < .05). Lung capacities in the case group were lower than in the control group (p < .05). Therefore, MDI can be easily measured making it possible to evaluate the adverse effects caused by occupational exposure.
authors.affiliation: School of Public Health & Institute of Public Health Research, Tehran University of Medical Sciences, IR Iran.
authors.forename: Hossein
authors.initials: H
authors.lastname: Kakooei
authors.forename: Seyed Jamaleddin
authors.initials: SJ
authors.lastname: Shahtaheri
authors.forename: Hossein-Ali
authors.initials: HA
authors.lastname: Karbasi
mesh_terms: D000395:Air Pollutants, Occupational / Q000009:adverse effects / Q000032:analysis*; D001336:Automobiles; D003430:Cross-Sectional Studies; D006801:Humans; D007221:Industry; D019570:Inhalation Exposure / Q000009:adverse effects / Q000032:analysis; D007492:Iran / Q000453:epidemiology; D017953:Isocyanates / Q000009:adverse effects / Q000032:analysis*; D016273:Occupational Exposure / Q000009:adverse effects / Q000032:analysis*; D001559:Benzhydryl Compounds
chemical_list: D000395:Air Pollutants, Occupational; D017953:Isocyanates; C005969:4,4'-diphenylmethane diisocyanate; D001559:Benzhydryl Compounds