成都市人为源挥发性有机物排放清单及特征

Emission Inventory and Characteristics of Volatile Organic Compounds from Anthropogenic Sources in Chengdu

基于成都市实地调查和环境统计等活动水平数据,采用排放因子法和计算模型等,编制了2014年成都市人为源VOCs排放清单,并完成了空间分配和不确定性分析。成都市人为源VOCs排放量为15.8×10~4t,其中化石燃料固定燃烧源、工艺过程源、溶剂使用源、移动源、储存运输源、其他源排放量分别为0.5×10~4、3.8×10~4、6.0×10~4、4.9×10~4、0.4×10~4、2.2×10~4t,溶剂使用源为最大人为排放源,其次是移动源和工艺过程源。木材加工业为最大工业贡献源,然后依次是医药制造业、非金属矿物制品业、化学原料、化学制品制造业、汽车制造业等。成都市人为源82%的VOCs排放量分布于二、三圈层的工业园区,而中心城区主要为移动源和建筑施工所贡献,其排放分布已随建成区联片发展而形成整体。排放清单活动水平数据可靠性较高,而排放因子存在一定不确定性。

Based on survey data,environmental statistics and other relevant activity data,VOCs anthropogenic sources emission inventory of Chengdu in 2014 was compiled by adopting the emission factor method and computing model. Besides,spatial distribution and uncertainties of the anthropogenic sources emission inventory were discussed. The total VOCs emission from these sources in Chengdu was 15. 8 × 10~4 tons,in which the stationary combustion source of fossil fuels,industrial processes,solvent utilization,mobile source,storage and distribution of fuel and other sources contributed 0. 5 × 10~4 tons,3. 8 × 10~4 tons,6. 0 ×10~4tons,4. 9 × 10~4 tons,0. 4 × 10~4 tons,2. 2 × 10~4 tons,respectively. Solvent utilization was the largest contributor compared to the other sources in Chengdu,followed by mobile source and industrial processes. Meanwhile,wood processing,pharmaceutical manufacturing industry,nonmetal mineral products,chemical industry and automobile industry were the major emission sectors of the industrial source. Industrial park in the suburbs contributed 82% of the total VOCs. The spatial distribution of VOCs emission in central city was integrated due to the urban development,and it was mainly contributed by the mobile source and architecture wall painting. The activity data tended to be reliable,whereas emission factors had some uncertainties.