Particle Size Distributions of Airborne Particulate Matter in a Ferrosilicon Smelter

2021 ◽  
Author(s):  
Ida Teresia Kero ◽  
A Blom ◽  
Rikke B Jørgensen
Keyword(s):  
Particle Size ◽  
Particulate Matter ◽  
Airborne Particulate Matter ◽  
Size Distributions ◽  
Airborne Particulate ◽  
Particle Size Distributions

Clarification of the predominant emission sources of antimony in airborne particulate matter and estimation of their effects on the atmosphere in Japan

2009 ◽  
Vol 6 (2) ◽  
pp. 122 ◽  
Author(s):  
Akihiro Iijima ◽  
Keiichi Sato ◽  
Yuji Fujitani ◽  
Eiji Fujimori ◽  
Yoshinori Saito ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Fly Ash ◽  
Airborne Particulate Matter ◽  
Waste Incineration ◽  
Emission Sources ◽  
Size Distributions ◽  
Airborne Particulate ◽  
Particle Size Distributions ◽  
Microscopic Images ◽  
Potential Sources

Environmental context. The remarkable enrichment of potentially toxic antimony (Sb) in inhalable airborne particulate matter has become of great environmental concern among recent air pollution issues. The present study clarifies the predominant sources of Sb by focusing on the similarities in elemental composition, particle size distributions, and microscopic images found in ambient airborne particles and several potential sources. We identify automotive brake abrasion dust and fly ash emitted from waste incineration as dominant sources of atmospheric Sb in Japan. These results will contribute towards an in-depth understanding of the cycles and fates of Sb in the environment. Abstract. By focusing on the similarities in elemental composition, particle size distributions of elemental concentrations, and microscopic images between ambient airborne particulate matter (APM) and several potential sources, we discuss the predominant sources of antimony (Sb) in APM in Japan. The distribution of Sb concentration in size-classified ambient APM showed a characteristic bimodal profile in which peaks were found in coarse (3.6–5.2 μm) and fine (0.5–0.7 μm) fractions. Elemental ratios, particle sizes, and microscopic images observed in the coarse APM fractions were found to be in good agreement with those of brake abrasion dust. However, in the fine APM fractions, fly ash originating from waste incineration was identified as the most probable source of Sb. Chemical mass balance analysis was performed to determine the effects of the emission sources of Sb, and it was revealed that brake abrasion dust and waste fly ash were the dominant sources of Sb in the coarser and the finer fractions of APM, respectively. The present study provides important clues to understanding the cycles and fates of Sb in the environment.

ANALYSIS OF AIRBORNE PARTICULATE MATTER COLLECTED AFTER AN ERUPTION EPISODE OF THE POPOCATÉPETL VOLCANO

2003 ◽  
Vol 13 (03n04) ◽  
pp. 133-139 ◽  
Author(s):  
F. ALDAPE ◽  
J. FLORES M.
Keyword(s):  
Particle Size ◽  
Particulate Matter ◽  
Mexico City ◽  
Airborne Particulate Matter ◽  
Airborne Particulate ◽  
Size Fractions ◽  
Particle Size Fractions ◽  
Two Samples ◽  
Popocatépetl Volcano ◽  
Popocatepetl Volcano

Samples of airborne particulate matter were collected in four sites along an east-west line from the Popocatépetl volcano after the eruption episode of June 30, 1997. The Popocatépetl volcano, with variable activity since it was known, is currently under low but continuous activity prolonged for almost one decade, with occasional moderate eruption episodes producing mainly fumes, ashes and volcanic dusts. The main objective of this study is to determine whether or not some elements have increased their presence in the atmosphere as a result of the volcanic activity, and also if some others, not usually found in urban aerosols, have appeared because of the same reason. In addition, the information obtained will be a source of scientific data for health risk assessment of the population exposed to volcanic emanations. The sample collection was performed on alternate days from July 10 to August 13 1997 in Puebla and Atlixco in Puebla State. Tlalpan within Mexico City, and Salazar in the State of Mexico. Two samples a day were taken in two periods: 7-19 h and 19-7 h. The samplers separated particles into two particle size fractions. PM25 and PM15. Elemental concentrations were determined by PIXE and the results obtained showed increased concentrations of mainly Ti and Fe in all sampling sites, thus indicating a long range transportation of volcanic dusts in both particle size fractions. Concentrations of Ti were found clearly above the average values of urban areas such as Mexico City, and although this element can be considered of low toxicity, the biological, metabolic and toxic effects on human beings are still under investigation.

scholarly journals Spatial and Seasonal Variations of PM Concentration and Size Distribution in Manure-Belt Poultry Layer Houses

2019 ◽  
Vol 62 (2) ◽  
pp. 415-427 ◽  
Author(s):  
Reyna M. Knight ◽  
Xinjie Tong ◽  
Zhenyu Liu ◽  
Sewoon Hong ◽  
Lingying Zhao
Keyword(s):  
Particle Size ◽  
Particulate Matter ◽  
Size Distribution ◽  
Seasonal Variations ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Potential Health ◽  
Significant Difference ◽  
Autumn And Winter ◽  
Mass Concentrations

Abstract. Poultry layer houses are a significant source of particulate matter (PM) emissions, which potentially affect worker and animal health. Particulate matter characteristics, such as concentration and size distribution inside layer houses, are critical information for assessment of the potential health risks and development of effective PM mitigation technologies. However, this information and its spatial and seasonal variations are lacking for typical layer facilities. In this study, two TSI DustTrak monitors (DRX 8533) and an Aerodynamic Particle Sizer (APS 3321) were used to measure PM mass concentrations and number-weighted particle size distributions in two typical manure-belt poultry layer houses in Ohio in three seasons: summer, autumn, and winter. Bimodal particle size distributions were consistently observed. The average count median diameters (mean ±SD) were 1.68 ±0.25, 2.16 ±0.31, and 1.87 ±0.07 µm in summer, autumn, and winter, respectively. The average geometric standard deviations of particle size were 2.16 ±0.23, 2.16 ±0.18, and 1.74 ±0.17 in the three seasons, respectively. The average mass concentrations were 67.4 ±54.9, 289.9 ±216.2, and 428.1 ±269.9 µg m-3 for PM2.5; 73.6 ±59.5, 314.6 ±228.9, and 480.8 ±306.5 µg m-3 for PM4; and 118.8 ±99.6, 532.5 ±353.0, and 686.2 ±417.7 µg m-3 for PM10 in the three seasons, respectively. Both statistically significant (p < 0.05) and practically significant (difference of means >20% of smaller value) seasonal variations were observed. Spatial variations were only practically significant for autumn mass concentrations, likely due to external dust infiltration from nearby agricultural activities. The OSHA-mandated permissible exposure limit for respirable PM was not exceeded in any season. Keywords: Air quality, Particulate matter, Poultry housing, Seasonal variation, Spatial variation.

scholarly journals Temporal Variation of Radiocarbon Concentration in Airborne Particulate Matter in Tokyo

Radiocarbon ◽  
2004 ◽  
Vol 46 (1) ◽  
pp. 485-490 ◽  
Author(s):  
Ken Shibata ◽  
Michio Endo ◽  
Naomichi Yamamoto ◽  
Jun Yoshinaga ◽  
Yukio Yanagisawa ◽  
...  
Keyword(s):  
Particle Size ◽  
Particulate Matter ◽  
Size Fraction ◽  
Airborne Particulate Matter ◽  
Coarse Particles ◽  
Particle Size Fraction ◽  
Airborne Particulate ◽  
Carbonaceous Particles ◽  
Secondary Particles ◽  
Insight Into

The temporal radiocarbon variation (in terms of percent Modern Carbon: pMC) of size-fractionated airborne particulate matter (APM) collected in Tokyo between April 2002 and February 2003 was analyzed in order to get an insight into the sources of carbonaceous particles. Results indicated significant biogenic origins (approximately 40 pMC on average). In general, the seasonal and particle size variations in pMC were relatively small, with 2 exceptions: elevated pMC in coarse particles in April and October 2002, and relatively low pMC in the finest particle size fraction collected in August 2002. The former finding could be tentatively attributed to the abundance of coarse particles of biological origins, such as pollen; the latter might be due to an increased fraction of anthropogenic secondary particles.

Size distribution and single particle characterization of airborne particulate matter collected in a silicon carbide plant

2019 ◽  
Vol 21 (3) ◽  
pp. 564-574 ◽  
Author(s):  
Torunn Kringlen Ervik ◽  
Nathalie Benker ◽  
Stephan Weinbruch ◽  
Yngvar Thomassen ◽  
Dag G. Ellingsen ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Particle Size ◽  
Particulate Matter ◽  
Size Range ◽  
Airborne Particulate Matter ◽  
Aerodynamic Diameter ◽  
Particle Characterization ◽  
Airborne Particulate ◽  
Detailed Characterization

A detailed characterization of particles as a function of particle size in the size range of 10 nm to 10 µm (aerodynamic diameter) collected from a silicon carbide plant in Norway.

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