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Study on the Effective Factors of Road Dust During Motor Vehicle Runing
Author(s): 
Pages: 34-36,80
Year: Issue:  12
Journal: Environmental Science and Management

Keyword:  道路扬尘路面粉尘负荷总悬浮颗粒物(TSP)可吸入颗粒物(PM10)影响因素;
Abstract: 机动车行驶过程道路扬尘是城区颗粒物污染的主要因素,其贡献率可达30%~50%.城市路面积尘是机动车行驶过程道路扬尘的主要尘源.路面尘受机动车车轮积压作用、机车行驶过程诱导气流、热射流等综合尘化作用的影响,再次扬向空中并扩散,造成空气中颗粒污染物TSP、PM10浓度增高.实验模拟单车行驶,研究道路粉尘负荷、车速、排放源距离对总悬浮颗粒物(TSP)、可吸入颗粒物(PM10)浓度的影响,结果显示:TSP、PM10浓度与机动车行驶速度呈显著正相关;同一车速下与路面粉尘负荷呈对数变化规律;与排放源距离呈负相关.
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