Feasibility the Biological Monitoring of Workers Exposed to Benzene and Toluene via Measuring the Parent Compounds in the Exhaled Breath
| Author | Seyed Younes Hosseini | en |
| Author | Mansour Rezazadeh Azari | en |
| Author | Rezvan Zendehdel | en |
| Author | Hamid Souri | en |
| Author | Raana Taiefeh Rahimian | en |
| Issued Date | 2015-08-01 | en |
| Abstract | Background: Solvents such as benzene and toluene are commonly used in tire manufacturing, and significant occupational exposure to these chemicals adversely affects the health of workers. In biological monitoring, a complementary method for personal monitoring, the internal absorbed dose is measured and individual, environmental, and exposure differences are taken into consideration. Objectives: The present study evaluated external doses by personal monitoring and investigated a more practical approach to biological monitoring by measuring the internal doses of benzene and toluene in workers involved in tire manufacturing. Materials and Methods: Personal monitoring of 100 workers in tire factories A and B (n = 50 samples from each factory, n = 100 total personal samples) was performed using the national institute for occupational safety and health 1501 method. Biological monitoring of the workers was performed by collecting exhaled air in Tedlar® bags (n = 100). Personal and biological samples were analyzed by a gas chromatograph equipped with a flame ionization detector. Data were analyzed by independent t-test and correlation coefficients. Results: There were no significant differences between factories with respect to worker age or work history. Personal exposure to benzene exceeded the current threshold limit value in 68% of workers. Occupational exposure to benzene and toluene as external (i.e. in the breathing area) and internal doses (i.e. in the exhaled air) were significantly higher in factory B than factory A. In addition, the external and internal doses of both compounds were significantly correlated. Conclusions: The workplace conditions of tire factories must be improved. The biological exposure index can be calculated by determining the unchanged benzene and toluene concentrations in exhaled air; this can be used as a more reliable method for personal monitoring. | en |
| DOI | https://doi.org/10.17795/jhealthscope-25774 | en |
| Keyword | Benzene | en |
| Keyword | Toluene | en |
| Keyword | Biological Monitoring | en |
| Keyword | Exhaled BreathExhaled Air | en |
| Keyword | Personal Monitoring | en |
| Keyword | Tire Manufacturing | en |
| Publisher | Brieflands | en |
| Title | Feasibility the Biological Monitoring of Workers Exposed to Benzene and Toluene via Measuring the Parent Compounds in the Exhaled Breath | en |
| Type | Research Article | en |
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