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2016•Unpublished venueOpen access

Road Dust Emission Spatial Characteristics of Shijiazhuang in 2014 Spring

Jieying Xiao, Juan Liu, WenXia Zhao, Shuo Guo, Sai An, Hui Kang, TianLin Yang

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Abstract

City road dust was one of the main sources of PM 10 .In this paper, roads were classified into four types: expressway, trunk road, secondary trunk road and branch road.Dust samples were collected from 17 representative roads of Shijiazhuang city, and were analyzed by laser particle size analyzer.And high-resolution vector quantization images of roads were extracted by Google Earth with Photoshop, GlobalMapper and ArcGIS.On the basis, road silt loading of Shijiazhuang in 2014 spring were obtained.The results showed that D50 (Median diameter) of the road dust ranged from 27.7-63.6μm.Average silt loading of different road types were 6.2-13.4g•m -2 , and the sequence was branch road > secondary trunk road > expressway > trunk road.

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City road dust was one of the main sources of PM 10 .In this paper, roads were classified into four types: expressway, trunk road, secondary trunk road and branch road.Dust samples were collected from 17 representative roads of Shijiazhuang city, and were analyzed by laser particle size analyzer.And high-resolution vector quantization images of roads were extracted by Google Earth with Photoshop, GlobalMapper and ArcGIS.On the basis, road silt loading of Shijiazhuang in 2014 spring were obtained.The results showed that D50 (Median diameter) of the road dust ranged from 27.7-63.6μm.Average silt loading of different road types were 6.2-13.4g•m -2 , and the sequence was branch road > secondary trunk road > expressway > trunk road.

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Available abstract

City road dust was one of the main sources of PM 10 .In this paper, roads were classified into four types: expressway, trunk road, secondary trunk road and branch road.Dust samples were collected from 17 representative roads of Shijiazhuang city, and were analyzed by laser particle size analyzer.And high-resolution vector quantization images of roads were extracted by Google Earth with Photoshop, GlobalMapper and ArcGIS.On the basis, road silt loading of Shijiazhuang in 2014 spring were obtained.The results showed that D50 (Median diameter) of the road dust ranged from 27.7-63.6μm.Average silt loading of different road types were 6.2-13.4g•m -2 , and the sequence was branch road > secondary trunk road > expressway > trunk road.

Key concepts: Spring (device), Environmental science, Remote sensing, Meteorology, Geology, Geography, Physics, Thermodynamics

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