[Characteristics of fugitive dust emission from paved road near construction activities].
Because of the mud/dirt carryout from construction activities, the silt loading of paved road nearby is higher and the fugitive dust emission is stronger. By sampling and laboratory analysis of the road surface dust samples, we obtain the silt loading (mass of material equal to or less than 75 micromaters in physical diameter per unit area of travel surface) of paved roads near construction activities. The result show that silt loading of road near construction activities is higher than "normal road", and silt loading is negatively correlated with length from construction's door. According to AP-42 emission factor model of fugitive dust from roads, the emission factor of influenced road is 2 - 10 times bigger than "normal road", and the amount of fugitive dust emission influenced by one construction activity is "equivalent" to an additional road length of approximately 422 - 3 800 m with the baseline silt loading. Based on the spatial and temporal distribution of construction activities, in 2002 the amount of PM10 emission influenced by construction activities in Beijing city areas account of for 59% of fugitive dust from roads.
Tian
Gang
G
Beijing Municipal Research Academy of Environmental Protection, Beijing 100037, China. tg-iep@vip.163.com
Fan
Shou-Bin
SB
Li
Gang
G
Qin
Jian-Ping
JP
D000393:Air Pollutants / Q000032:analysis* / Q000737:chemistry; D002681:China; D004391:Dust / Q000032:analysis*; D004784:Environmental Monitoring; D005160:Facility Design and Construction; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis* / Q000737:chemistry; D001335:Vehicle Emissions / Q000032:analysis*
D000393:Air Pollutants; D004391:Dust; D052638:Particulate Matter; D001335:Vehicle Emissions