Study on Atmospheric Pollutant Emission Inventory of Road Mobile Sources in Hetian City
In order to scientifically establish a road mobile source emission inventory for Hetian city,a grid-based emission inventory with a resolution of 3 km×3 km was developed for nine atmospheric pollutants from road mobile sources.The spatiotemporal distribution characteristics of the pollutant emissions were analyzed,and the un-certainty of the inventory was assessed using the Monte Carlo method.The results showed that in 2021,the road mobile sources in Hetian city emitted a total of 3 138.46 tons of CO,4 488.87 tons of NOx,183.55 tons of SO2,71.22 tons of NH3,349.32 tons of VOCs,58.85 tons of PM2.5,64.06 tons of PM10,34.17 tons of BC,and 8.32 tons of OC.Among these,CO,NOx,SO2,PM2.5,PM10,BC,and OC were primarily emitted from the heavy-duty diesel trucks,while NH3 were mainly emitted from light-duty gasoline passenger cars and VOCs mainly from heavy-duty diesel trucks,light-duty gasoline passenger cars,and light-duty diesel trucks.For all pollutants except NH3,the largest proportion of emissions stemmed from national standard Ⅲ and national standard Ⅴ diesel vehicles.The uncertainty analysis showed that the overall uncertainty range for mobile sources was-27.60％to 40.16％,indica-ting a relatively low level of uncertainty.
road mobile sourceemission inventorytemporal and spatial distributionuncertainty analysis
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