通过研究建立了大连市机动车VOCs排放调查与测算方法, 基于实地调查的活动水平信息, 采用排放系数法建立了大连市机动车VOCs排放清单, 总结分析了大连市机动车VOCs的排放特征. 结果表明, 2013年大连市机动车VOCs排放总量约为3.5万t, 载客汽车占总量的62%, 对机动车VOCs排放的贡献最大; 排放标准中, 国Ⅱ标准和国0黄标车VOCs排放分别占汽油车排放的30%和26%; 时间分布上, 昼间机动车VOCs排放较高, 特别是在早高峰时段排放相对集中; 空间分布上, VOCs排放从市中心向周边区域逐步降低.%Established Dalian City vehicles emissions of VOCs survey and calculation method. Based on the collected activity data, the vehicles VOCs emission inventory of Dalian were set up by using emission factor method. The characteristics of VOCs emission of vehicles in Dalian were analyzed. The results showed that, the total VOCs emission of Dalian vehicles in 2013 were about 35 000 tons. Passenger Vehicles emission had the largest contribution to the VOCs emissions of vehicles, occupied 62% of the total amount, for gasoline cars, the emission of the nation Ⅱstandard vehicles and nation 0 yellow label vehicles were 30% and 26% respectively, the time distribution showed that the VOCs emission were higher during the daytime and the highest time was morning peak, the spatial distribution showed that vehicle emission intensity decrease gradually from downtown to suburb.
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