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.

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 Characterization of Airborne Particles Emitted During Application of Cosmetic Talc Products

2019 ◽  
Vol 16 (20) ◽  
pp. 3830 ◽  
Author(s):  
Pat Rasmussen ◽  
Christine Levesque ◽  
Jianjun Niu ◽  
Howard Gardner ◽  
Gregory Nilsson ◽  
...  
Keyword(s):  
Particle Size ◽  
Consumer Products ◽  
Airborne Particles ◽  
Aerodynamic Diameter ◽  
Breathing Zone ◽  
Direct Reading ◽  
Detailed Characterization ◽  
Adult Body ◽  
Reading Instruments

A pilot study was undertaken to characterize the concentration, duration and particle size distribution of the talc cloud that forms in the personal breathing zone (PBZ) during application of certain talc-containing cosmetics. Multiple direct-reading instruments were employed to simultaneously monitor PM4 concentrations (particulate matter with aerodynamic diameter < 4 µm; mg/m3) at different distances from each of three subjects while they applied talc products. Results indicated that the purpose and method of applying the talc product, combined with behavioral and physical differences amongst subjects, all strongly influenced airborne talc concentrations and the duration of the cloud. Air concentrations of talc in the PBZ averaged around 1.0 mg/m3, and the duration of exposure varied from less than one minute to more than ten minutes. The real-time monitors captured the occasional formation of secondary clouds, likely caused by resuspension of talc particles from skin or other surfaces. Measurements of aerosolized baby powder, face powder, and two adult body powders indicated that the median aerodynamic diameter of the talc cloud ranged from 1.7 to 2.0 µm. These direct-reading approaches were valuable for providing detailed characterization of short duration exposures to airborne talc particles, and will be useful to support future exposure assessments of talc and other powders in consumer products.

Identification of Genotoxic Compounds in the Airborne Particulate Matter Endowed by Small Aerodynamic Diameter in the City of Catania (Italy)

2006 ◽  
Vol 96 (9-10) ◽  
pp. 537-542 ◽  
Author(s):  
Salvatore Motta ◽  
Vito Librando ◽  
Zelica Minniti ◽  
Concetta Federico ◽  
Salvatore Saccone
Keyword(s):  
Particulate Matter ◽  
Airborne Particulate Matter ◽  
Aerodynamic Diameter ◽  
Airborne Particulate ◽  
Genotoxic Compounds ◽  
The City

scholarly journals Characterization of airborne particulate matter in an industrial district near Florence by PIXE and PESA

2005 ◽  
Vol 34 (4) ◽  
pp. 323-329 ◽  
Author(s):  
M. Chiari ◽  
F. Lucarelli ◽  
F. Mazzei ◽  
S. Nava ◽  
L. Paperetti ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Airborne Particulate Matter ◽  
Industrial District ◽  
Airborne Particulate
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