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 ORIGINAL ARTICLE
Year : 2008  |  Volume : 12  |  Issue : 2  |  Page : 82-87

The role of exhaust ventilation systems in reducing occupational exposure to organic solvents in a paint manufacturing factory


1 Occupational Health Department, Faculty of Health, University of Shahid Beheshti (MC), Tehran, Iran
2 Occupational Health Department, Faculty of Health, University of Tehran, Iran

Correspondence Address:
Ali Karimi
Occupational Health Department, Faculty of Health, University of Tehran, Tehran
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-5278.43266

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This paper presents the successful design and implementation of several exhaust ventilation systems in a paint manufacturing factory. The ventilation systems were designed based on American Conference of Governmental Industrial Hygienists recommendations. The duct works, fans, and other parts were made and mounted by local manufacturers. The concentrations of toluene and xylene as the common solvents used in paint mixing factories were measured to evaluate the role of ventilation systems in controlling the organic solvents. Occupational exposure to toluene and xylene as the major pollutants was assessed with and without applying ventilation systems. For this purpose, samples were taken from breathing zone of exposed workers using personal samples. The samples were analyzed using Occupational Safety and Health Administration analytical method No.12. The samples were quantified using gas chromatography. The results showed that the ventilation systems successfully controlled toluene and xylene vapors in workplace, air well below the recommended threshold limit value of Iran (44.49 and 97.73 ppm, respectively). It was also discovered that benzene concentration in workplace air was higher than its allowable concentrations. This could be from solvents impurities that require more investigations.






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