Volume 63, Issue 1 (5 2005)                   Tehran Univ Med J 2005, 63(1): 32-39 | Back to browse issues page

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Shah Taheri S, Afshar M, Majedi Far M, Nasl Saraji J. Occupational Exposure To Xylene In Workers, Employing At Pathology Wards Of Hospitals Belonging To The Qazvin University Of Medical Sciences . Tehran Univ Med J 2005; 63 (1) :32-39
URL: http://tumj.tums.ac.ir/article-1-1049-en.html
Abstract:   (6370 Views)

Background: Nowadays, aromatic hydrocarbons such as benzene, toluene, and xylene are extensively used in the different environments and industries, causing adverse effects on individuals who are being exposed occupationally and environmentally to these hazardous compounds. In this study, occupational exposure to xylene in workers, employing at pathology wards of hospitals belonging to the Qazvin University of Medical Sciences have been investigated.

Materials and Methods: Methyl Hiporic Acid (MHA) as a main metabolite of xylene in urine was used to evaluate the workers exposure to this chemical. The urine samples were taken from all 30 workers from 4 hospitals, i.e. Kosar, Shahid Rajaei, Booali and Qods. Through this study, 30 administrative employees were also selected as control group. The direct DBA colorimetric method was used to measure MHA in the workers urine.      

Results: The results obtained from this study showed that, there were significant differences between MHA and working days, type of jobs, and length of exposure time. This study also showed that, there were no significant differences between urinary MHA concentration and sex, age, and smoking habit.

Conclusion: Through this study, it was also clearly obtained that, xylene exposure can not affect on the total and direct serum bilirobin in the workers blood. Finally, it is worth mentioning that, although this study showed no acute exposure to xylene in hospitals pathology wards, the effect of chronic exposure to such compound cannot be ignored, therefore protecting workers against like these organic solvents are strongly recommended as their TLVs are considerably being reduced during these years

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