Flux estimation of fugitive particulate matter emissions from loose Calcisols at construction sites
Flux estimation of fugitive particulate matter emissions from loose Calcisols at construction sites
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DOI：
10.1016/j.atmosenv.2016.06.054
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发表时间：
2016-09-01
影响因子：
5
通讯作者：
Kakosimos, Konstantinos E.
中科院分区：
文献类型：
--
作者：
Hassan, Hala A.;Kumar, Prashant;Kakosimos, Konstantinos E.
在干旱和半干旱环境（即北非、中东、中亚和澳大利亚）中，空气污染的一个主要来源是易散颗粒物（fPM），这是风蚀的常见产物。然而，精确测定fPM是一个持续的科学挑战。本研究的目的是检查（PM排放量从松散的钙土（即土壤与大量积累的次生碳酸盐），由于建设活动，可以经常看到现在在干旱的城市化地区，如中东。在多哈（卡塔尔）市内的一个建筑工地进行了为期两个月的实地活动，利用基于光散射的监测站测量了0.25-32 μ m尺寸范围内的PM数浓度。PM排放通量的计算采用了Fugitive Dust Model（FDM）的迭代方式，并拟合成幂函数，表达了风速的依赖性。四种不同粒径的颗粒的功率因子分别为1.87、1.65、2.70和2.06
A major source of airborne pollution in arid and semi-arid environments (i.e. North Africa, Middle East, Central Asia, and Australia) is the fugitive particulate matter (fPM), which is a frequent product of wind erosion. However, accurate determination of fPM is an ongoing scientific challenge. The objective of this study is to examine (PM emissions from the loose Calcisols (i.e. soils with a substantial accumulation of secondary carbonates), owing to construction activities that can be frequently seen nowadays in arid urbanizing regions such as the Middle East. A two months field campaign was conducted at a construction site, at rest, within the city of Doha (Qatar) to measure number concentrations of PM over a size range of 0.25-32 mu m using light scattering based monitoring stations. The (PM emission fluxes were calculated using the Fugitive Dust Model (FDM) in an iterative manner and were fitted to a power function, which expresses the wind velocity dependence. The power factors were estimated as 1.87, 1.65, 2.70 and 2.06 for the four different size classes of particles