渭南主城区道路积尘负荷及交通扬尘颗粒物排放

Road dust loading in main urban area of Weinan and particulate matters emission released by vehicle fugitive dust

对渭南主城区道路积尘负荷进行了实测,并计算了2018年不同道路类型和不同车型的交通扬尘颗粒物排放量。结果表明:渭南主城区支路积尘负荷最大,为1.79 g/m^2,高速积尘负荷最小,为0.05 g/m^2,洒水作业能有效降低积尘负荷;渭南主城区道路交通扬尘PM2.5和PM 10的年排放量分别为1149.65、4751.88 t;小型客车引起的交通扬尘颗粒物排放在城市道路(包括主干道、次干道、支路)和国省道(包括国道和省道)上的分担率最高,分别为59.49%、41.46%,重型货车在高速上的分担率最高,为63.35%;城市道路交通扬尘颗粒物排放有明显的双峰日变化规律,而国省道和高速不明显。

Road dust loading was determined in main urban area of Weinan,and particulate matters emission released by vehicle fugitive dust was estimated from different aspects of road types and vehicle types in 2008.Results showed that the dust loading of the branch road was the largest(1.79 g/m^2),while that of the expressway was the smallest(0.05 g/m^2).Sprinkling was an effective way to decrease dust loading.PM2.5 and PM 10 annual emissions released by vehicle fugitive dust in main urban area of Weinan were 1149.65 and 4751.88 t,respectively.On urban roads(including main road,secondary main road and branch road),and national and provincial roads(including national road and provincial road),the distribution rates caused by small passenger cars were the highest(59.49%and 41.46%,respectively).But on expressway,the distribution rates caused by heavy trucks was the highest(63.35%).The particulate matters emission released by vehicle fugitive dust had obvious daily variation with two peaks on urban roads,but not on national and provincial roads and expressway.