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Spatial distribution of magnetic material in urban road dust classified by land use and type of road in San Luis Potosí, Mexico
Air Quality, Atmosphere & Health ( IF 5.1 ) Pub Date : 2020-07-04 , DOI: 10.1007/s11869-020-00851-5
Anahi Aguilera , Juan Julio Morales , Avto Goguitchaichvili , Felipe García-Oliva , Cynthia Armendariz-Arnez , Patricia Quintana , Francisco Bautista

Industrial and vehicular emissions of particles cause multiple damages to human health due to concentration, size, and composition. These emissions contain magnetic particles; therefore, low-cost properties allow tracking and monitoring them. This study is aimed at identifying the primary sources of magnetic material in 100 samples of urban road dust from San Luis Potosí, Mexico, analyzing the influence of land use and the type of road on these particles. Magnetic susceptibility ( χ lf ) and isothermal remanent magnetization at 0.7 T (IRM 0.7T ) were determined, as well as the iron and manganese content using X-ray fluorescence. The distribution of particles was examined by land use and type of road through geostatistical maps and variance analysis. The results showed that the iron and manganese content, χ lf , and IRM 0.7T were positively correlated, indicating a possible common origin. The primary sources identified were the iron smelter and laminator in the industrial park. Urban land use influenced the content of iron, manganese, and magnetic material in urban road dust. The land uses with the more significant transformation (industrial and mixed) presented the highest values of iron, manganese, χ lf , and IRM 0.7T . On the other hand, vehicular traffic was indirectly assessed through the type of road, influencing the magnetic signal of urban road dust and finding the highest signals in primary and secondary roads. Then, the magnetic properties allowed the tracking and monitoring of magnetic particles from industrial and vehicle emissions.

中文翻译:

墨西哥圣路易斯波托西市按土地用途和道路类型分类的城市道路灰尘中磁性物质的空间分布

由于浓度、大小和成分,工业和车辆排放的颗粒会对人体健康造成多重损害。这些排放物含有磁性粒子;因此,低成本属性允许跟踪和监控它们。本研究旨在确定来自墨西哥圣路易斯波托西的 100 个城市道路灰尘样本中磁性材料的主要来源,分析土地利用和道路类型对这些颗粒的影响。确定了磁化率 ( χ lf ) 和 0.7 T (IRM 0.7T ) 下的等温剩磁,以及使用 X 射线荧光测定的铁和锰含量。通过地质统计图和方差分析,通过土地利用和道路类型检查颗粒的分布。结果表明,铁和锰的含量、χ lf 和 IRM 0. 7T 呈正相关,表明可能存在共同起源。确定的主要来源是工业园区的炼铁厂和层压机。城市土地利用影响城市道路扬尘中铁、锰和磁性物质的含量。具有更显着转变(工业和混合)的土地利用呈现出最高的铁、锰、χ lf 和 IRM 0.7T 值。另一方面,通过道路类型间接评估车辆交通,影响城市道路灰尘的磁信号,并在一级和二级道路上找到最高信号。然后,磁性允许跟踪和监测来自工业和车辆排放的磁性粒子。确定的主要来源是工业园区的炼铁厂和层压机。城市土地利用影响城市道路扬尘中铁、锰和磁性物质的含量。具有更显着转变(工业和混合)的土地利用呈现出最高的铁、锰、χ lf 和 IRM 0.7T 值。另一方面,通过道路类型间接评估车辆交通,影响城市道路灰尘的磁信号,并在一级和二级道路上找到最高信号。然后,磁性允许跟踪和监测来自工业和车辆排放的磁性粒子。确定的主要来源是工业园区的炼铁厂和层压机。城市土地利用影响城市道路扬尘中铁、锰和磁性物质的含量。具有更显着转变(工业和混合)的土地利用呈现出最高的铁、锰、χ lf 和 IRM 0.7T 值。另一方面,通过道路类型间接评估车辆交通,影响城市道路灰尘的磁信号,并在一级和二级道路上找到最高信号。然后,磁性允许跟踪和监测来自工业和车辆排放的磁性粒子。具有更显着转变(工业和混合)的土地利用呈现出最高的铁、锰、χ lf 和 IRM 0.7T 值。另一方面,通过道路类型间接评估车辆交通,影响城市道路灰尘的磁信号,并在一级和二级道路上找到最高信号。然后,磁性允许跟踪和监测来自工业和车辆排放的磁性粒子。具有更显着转变(工业和混合)的土地利用呈现出最高的铁、锰、χ lf 和 IRM 0.7T 值。另一方面,通过道路类型间接评估车辆交通,影响城市道路灰尘的磁信号,并在一级和二级道路上找到最高信号。然后,磁性允许跟踪和监测来自工业和车辆排放的磁性粒子。
更新日期:2020-07-04
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