The concentration of benzene,toluene,ethylbenzene,and xylene in ambient air of the gas stations in Iran: A systematic review and probabilistic health risk assessment
Restricted accessResearch articleFirst published online March, 2021
The concentration of benzene,toluene,ethylbenzene,and xylene in ambient air of the gas stations in Iran: A systematic review and probabilistic health risk assessment
Exposure to benzene, toluene, ethylbenzene, and xylene (BTEX) has been reported in gas stations. Exposure to BTEX can result in adverse health outcomes in workers such as cancer and neurological effects. The health risk assessments of exposure to BTEX could be useful in choosing suitable control measures. In this review, data from previous studies of gas station environments in Iran were collected from years 2000 to 2020. The health risk assessments were conducted through the estimation of cancer and noncancer risks using a Monte Carlo simulation based on the US Environmental Protection Agency method. The results showed that exposure to BTEX in some cities of Iran was greater than the occupational exposure limits. The results of cancer risk assessments demonstrated that cancer risk was not increased. However, results of noncancer risk assessments demonstrated that neurological toxicity from exposure to BTEX was significant in different cities of Iran. The health risk assessments indicated that workers at gas station are at health risk.
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