Seasonal and spatial variations in dust deposition rate and concentrations of dust-borne heavy metals, a case study from Isfahan, central Iran

A New Geochemical Method for Determining the Sources of Atmospheric Particles: A Case Study from Gannan, Northeast China

“…The results will assist in developing strategies for reducing dry deposition pollution inputs to agricultural soils in the area and will effectively target policies to protect soils from long-term contaminant accumulation.Atmosphere 2019, 10, 632 2 of 20 and in turn increase the risk to human health [9]. Natural sources such as weathered materials, soils, and crustal minerals, and man-made sources such as vehicle emissions [10][11][12], residential fossil-fuel burning, non-ferrous metal processing, industrial emissions, and construction operations [6,[13][14][15] have made major contributions to the concentrations of some elements in atmospheric dust [16,17].Dust can influence radiation of light, global biogeochemical cycles, environmental pollution, and human health risks, and can also stimulate primary productivity [18,19]. Therefore, exploring deposition sources is an important research field to identify and control air pollution.…”

“…Crucial factors determining the deposition rate include the chemical characteristics of the depositional environment, types and distance of emission sources, and some meteorological conditions [20,21]. In particular, information regarding the spatiotemporal variability of the dust rate provides a powerful framework for evaluating deposition characteristics in a given location [19,21,22].Dust transmission plays an important role in Earth's systems [1][2][3][4][5][6]. Aeolian sand is a major driving force in the climate system through its influence on light scattering/absorption, cloud properties and the ice and snow albedo [23][24][25][26][27].…”

“…Aeolian sand is a major driving force in the climate system through its influence on light scattering/absorption, cloud properties and the ice and snow albedo [23][24][25][26][27]. East Asian deserts are the second largest source of dust [19,28]. The Taklimakan desert and the deserts of Inner Mongolia (such as Badain Jaran and Tengger) are the dominant dust sources for both the subarctic Northwestern Pacific, Greenland and even North America [25,29] Although system model research studies of dry deposition have been conducted [1,2,11,25,[30][31][32][33][34], most of the investigations have been limited by the multiple solutions of the algorithms, which analyze the source information based on the pollution transmission of meteorological conditions or lack information on the geological compositions of particles, which could provide accurate source information [35][36][37][38].…”

“…Dust can influence radiation of light, global biogeochemical cycles, environmental pollution, and human health risks, and can also stimulate primary productivity [18,19]. Therefore, exploring deposition sources is an important research field to identify and control air pollution.…”

“…Crucial factors determining the deposition rate include the chemical characteristics of the depositional environment, types and distance of emission sources, and some meteorological conditions [20,21]. In particular, information regarding the spatiotemporal variability of the dust rate provides a powerful framework for evaluating deposition characteristics in a given location [19,21,22].…”