Abstract:In order to explore the pollution of Mercury (Hg) in surface dust of different micro-environment in driving schools in Wuhu City, the concentrations of Hg in 26 driving schools with full and fine particle sizes were measured by Hydra II C, and the statistical analysis was carried out. The results showed that the average concentrations of Hg in the full and fine particle sizes dust on the surface of driving school were 49.36 ng/g and 59.97 ng/g, respectively, which were lower than the background value of soil in Wuhu City, and there were statistically significant differences in Hg concentrations between the full particle size and the fine particle size. For the full particle size dust, the average concentrations of Hg in different training programs of driving school were in decreasing order of reverse stall parking > S bending > side parking > right angle turning > parking on ramps, and the fine particle size dust showed as follows:reverse stall parking > S bending > side parking > parking on ramps > right angle turning. Both of them showed a similar regularity. The Hg content of fine particle size dust in the three items of reverse stall parking, S bending and side parking were significantly higher than that in the right angle turning and the parking on ramps, the Hg content of full particle size dust in the reverse stall parking was significantly higher than that in the parking on ramps. Through the analysis of the factors affecting the dust Hg of driving school surface, it was found that the average concentration of Hg in indoor driving school was higher than that of outdoor driving school, the concentration of Hg in gas driving school was significantly higher than that in fuel driving school, and there were significant difference in Hg concentrations of surface dust between fuel and gas driving schools. It was found that the concentrations of Hg in S bending, reverse stall parking and side parking were significantly correlated with coach vehicle density, and the Hg concentration of surface dust in Wuhu driving school was affected by vehicle exhaust emissions. Hg pollution caused by vehicle exhaust emissions, fuel leakage and tire wear could not be underestimated, and there was an accumulation phenomenon. The coaches' health was threatened, as they were working in driving school all the year round. The Hg pollution in driving school should be taken seriously.