Source apportionment of aerosol particles near a steel plant by electron microscopy

2012 ◽  
Vol 14 (12) ◽  
pp. 3257 ◽  
Author(s):  
Martin Ebert ◽  
Dörthe Müller-Ebert ◽  
Nathalie Benker ◽  
Stephan Weinbruch
Keyword(s):  
Electron Microscopy ◽  
Source Apportionment ◽  
Aerosol Particles ◽  
Steel Plant

scholarly journals Source Contributions to Rural Carbonaceous Winter Aerosol in North-Eastern Poland

Atmosphere ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 263 ◽  
Author(s):  
Adam Kristensson ◽  
Stina Ausmeel ◽  
Julija Pauraite ◽  
Axel Eriksson ◽  
Erik Ahlberg ◽  
...  
Keyword(s):  
Source Apportionment ◽  
Aerosol Particles ◽  
Road Transport ◽  
Carbonaceous Aerosol ◽  
Monitoring Site ◽  
Journal Articles ◽  
Wood Combustion ◽  
Combustion Source ◽  
Source Contributions ◽  
North Eastern

Concentrations of aerosol particles in Poland and their sources are rarely discussed in peer-reviewed journal articles despite serious air quality issues. A source apportionment of carbonaceous aerosol particles was performed during winter at a rural background environment field site in north-eastern Poland. Data were used of light absorption at seven wavelengths and levoglucosan concentrations along existing monitoring of PM2.5, organic carbon and elemental carbon (OC/EC) at the Diabła Góra EMEP monitoring site between January 17 and March 19 during the EMEP intensive winter campaign of 2018. Average PM2.5, OC, EC, equivalent black carbon (eBC) and levoglucosan concentrations and standard deviations amounted to 18.5 ± 9.3, 4.5 ± 2.5, 0.57 ± 0.28, 1.04 ± 0.62 and 0.134 ± 0.084 µg m−3 respectively. Various tools for source apportionment were used to obtain a source contribution to carbonaceous matter (CM) with three components. The wood combustion source component contributed 1.63 µg m−3 (21%), domestic coal combustion 3.3 µg m−3 (41%) and road transport exhaust 2.9 µg m−3 (38%). Similar levels and temporal variability were found for the nearby Lithuanian site of Preila, corroborating the Polish results.

scholarly journals Mixing states of Amazon-basin aerosol particles transported over long distances using transmission electron microscopy

2020 ◽  
Author(s):  
Kouji Adachi ◽  
Naga Oshima ◽  
Zhaoheng Gong ◽  
Suzane de Sá ◽  
Adam P. Bateman ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Amazon Basin ◽  
Mineral Dust ◽  
Aerosol Particles ◽  
Sea Salt ◽  
Anthropogenic Sources ◽  
Natural Sources ◽  
Transmission Electron ◽  
Mixing States

Abstract. The Amazon basin is important for understanding the global climate both because of its carbon cycle and as a laboratory for obtaining basic knowledge of the continental background atmosphere. Aerosol particles play an important role in the climate and weather, and knowledge of their compositions and mixing states is necessary to understand their influence on the climate. For this study, we collected aerosol particles from the Amazon basin during the Green Ocean Amazon (GoAmazon2014/5) campaign (February to March 2014) at the T3 site, which locates about 70 km from Manaus, and analyzed using transmission electron microscopy (TEM). TEM has better spatial resolution than other instruments, which enables us to analyse the occurrences of components that attach to or are embedded within other particles. Based on the TEM results of more than 10,000 particles from several transport events, this study shows the occurrences of individual particles including compositions, size distributions, number fractions, and possible sources of materials that mix with other particles. Aerosol particles during the wet season were from both natural sources such as the Amazon forest, Saharan desert, Atlantic Ocean, and African biomass burning and anthropogenic sources such as Manaus and local emissions. These particles mix together at an individual particle scale. The number fractions of mineral dust and sea-salt particles increased almost three-fold when long-range transport (LRT) from the African continent occurred. Nearly 20 % of mineral dust and primary biological aerosol particles attached sea salts on their surfaces. Sulfates were also internally mixed with sea-salt and mineral dust particles. The TEM element mapping images showed that several components with sizes of hundreds of nanometres from different sources commonly occur within individual LRT aerosol particles. We conclude that many aerosol particles from natural sources change their compositions by mixing during transport. The compositions and mixing states of these particles after emission result in changes in their hygroscopic and optical properties and should be considered when assessing their effects on climate.

scholarly journals Technical Note: A novel rocket-based in situ collection technique for mesospheric and stratospheric aerosol particles

2013 ◽  
Vol 6 (3) ◽  
pp. 777-785 ◽  
Author(s):  
W. Reid ◽  
P. Achtert ◽  
N. Ivchenko ◽  
P. Magnusson ◽  
T. Kuremyr ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Particle Number ◽  
Aerosol Particles ◽  
Stratospheric Aerosol ◽  
Technical Note ◽  
Sounding Rocket ◽  
Height Range ◽  
Transmission Electron ◽  
In Situ Collection

Abstract. A technique for collecting aerosol particles between altitudes of 17 and 85 km is described. Spin-stabilized collection probes are ejected from a sounding rocket allowing for multi-point measurements. Each probe is equipped with 110 collection samples that are 3 mm in diameter. The collection samples are one of three types: standard transmission electron microscopy carbon grids, glass fibre filter paper or silicone gel. Collection samples are exposed over a 50 m to 5 km height range with a total of 45 separate ranges. Post-flight electron microscopy will give size-resolved information on particle number, shape and elemental composition. Each collection probe is equipped with a suite of sensors to capture the probe's status during the fall. Parachute recovery systems along with GPS-based localization will ensure that each probe can be located and recovered for post-flight analysis.

Source apportionment of aerosol particles at a European air pollution hot spot using particle number size distributions and chemical composition

2018 ◽  
Vol 234 ◽  
pp. 145-154 ◽  
Author(s):  
Cecilia Leoni ◽  
Petra Pokorná ◽  
Jan Hovorka ◽  
Mauro Masiol ◽  
Jan Topinka ◽  
...  
Keyword(s):  
Air Pollution ◽  
Chemical Composition ◽  
Source Apportionment ◽  
Particle Number ◽  
Hot Spot ◽  
Aerosol Particles ◽  
Size Distributions
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