Web30 de mar. de 1999 · The temporal and geographical extent of African dust transport to the United States is nicely depicted by Perry et al. , who studied PM 2.5 soil dust particle concentrations (based on the measured concentration of Al, Ca, Fe, Si, and Ti in twice-weekly daily samples) in a network of approximately 70 sites located in national parks … Web1 de mar. de 2024 · We measured the concentrations of 11 OUVAs in street dust from Tianjin, China, by a gas chromatography-mass spectrometry, and found total concentrations in the range of 10.3–129 ng/g. These OUVAs were prevalent in the study street dust, but their concentrations were much lower than those in indoor dust …
Concentrations and chemical forms of heavy metals in the bulk ...
Web3 de out. de 2024 · This study aimed to investigate concentrations and mobility of selected metals (As, Cd, Cr, Co, Cu, Mn, Ni, Pb and Zn) contained in the bulk atmospheric deposition of Beijing, China, between March 2007 and February 2008, and to evaluate the metal deposition fluxes. Beijing endured heavy atmospheric deposited metal pollution … Web13 de abr. de 2024 · To better understand the dust dispersion and pollution laws in coal–oil shale fully mechanized mining faces, the airflow distribution and coal and oil shale mixed dust emission law was simulated, and the simulation results are analyzed and verified in combination with the field measured data. The research results showed that in the area … shane\u0027s rib shack ooltewah
Surface dust heavy metals in the major cities, China
Web25 de mar. de 2024 · The potential health risk of heavy metals (HMs) in campus dust may threaten the health of thousands of students, teachers, and their families in Wuhan, the university cluster in Central China every day. In this research, the pollution characteristics and health risk with HMs was the first time presented in campus dust from the canteen, … WebThe dust must be airborne; The dust must have a size distribution capable of flame propagation; The dust concentration must be within the explosive concentration … Web30 de mar. de 2024 · The proportion of TSP, PM 10 and PM 2.5 in building construction dust is 1, 0.239 and 0.116, respectively. The large diameter particulate matter was the major constituent and the distance of its influence was limited. In addition, construction vehicles were one of the main influencing factors for building construction dust. shane\u0027s rib shack peachtree corners