[Vehicle Air Pollutant Emission Inventory and Characterization in Henan Province from 2016 to 2019].

Based on the collected urban motor vehicle activity ownership and traffic flow of highways, combined with the mileage and source profiles of VOCs, using the emission factor method, we established high-resolution emission inventories from 2016 to 2019 for urban and 2016-based highway motor vehicles, respectively, in Henan Province, China. The results showed that gasoline vehicles, particularly minibuses and ordinary motorcycles, were the main contributors of CO, VOCs, and NH, whereas heavy-duty and light-duty diesel trucks emitted SO, NO, and PM. Vehicles with China 1, China 3, and China 4 emission standards contributed significantly to pollutant emissions in the fleet.

[A 2013-based Atmospheric Ammonia Emission Inventory and Its Characteristic of Spatial Distribution in Henan Province].

Based on the best available activity data at a city level from top down and bottom up methods, a 2013-based emission inventory of NH was established for the Henan Province using an emission factors method. The 3 km×3 km spatial gridded distribution was carried out by using GIS technology. The results showed that the total amount of atmospheric NH emission in Henan Province in 2013 was 1035.