Determination of secondary organic aerosol in particulate matter – Short review

2020 ◽  
Vol 157 ◽  
pp. 104997
Author(s):  
Justyna Klyta ◽  
Marianna Czaplicka
Keyword(s):  
Particulate Matter ◽  
Secondary Organic Aerosol ◽  
Organic Aerosol ◽  
Short Review

scholarly journals Analysis and determination of secondary organic aerosol (SOA) tracers (markers) in particulate matter standard reference material (SRM 1649b, urban dust)

2019 ◽  
Vol 411 (23) ◽  
pp. 5975-5983 ◽  
Author(s):  
Alexandre Albinet ◽  
Grazia Maria Lanzafame ◽  
Deepchandra Srivastava ◽  
Nicolas Bonnaire ◽  
Frederica Nalin ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Reference Material ◽  
Standard Reference Material ◽  
Secondary Organic Aerosol ◽  
Organic Aerosol ◽  
Urban Dust

Experimental determination of chemical diffusion within secondary organic aerosol particles

2013 ◽  
Vol 15 (8) ◽  
pp. 2983 ◽  
Author(s):  
Evan Abramson ◽  
Dan Imre ◽  
Josef Beránek ◽  
Jacqueline Wilson ◽  
Alla Zelenyuk
Keyword(s):  
Experimental Determination ◽  
Secondary Organic Aerosol ◽  
Aerosol Particles ◽  
Chemical Diffusion ◽  
Organic Aerosol

scholarly journals Secondary organic aerosol formation exceeds primary particulate matter emissions for light-duty gasoline vehicles

2013 ◽  
Vol 13 (9) ◽  
pp. 23173-23216 ◽  
Author(s):  
T. D. Gordon ◽  
A. A. Presto ◽  
A. A. May ◽  
N. T. Nguyen ◽  
E. M. Lipsky ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Secondary Organic Aerosol ◽  
Cold Start ◽  
Organic Aerosol ◽  
Smog Chamber ◽  
Aerosol Formation ◽  
Gas Emissions ◽  
Light Duty ◽  
Gasoline Vehicles ◽  
Diesel Trucks

Abstract. The effects of photochemical aging on emissions from 15 light-duty gasoline vehicles were investigated using a smog chamber to probe the critical link between the tailpipe and ambient atmosphere. The vehicles were recruited from the California in-use fleet; they represent a wide range of model years (1987 to 2011), vehicle types and emission control technologies. Each vehicle was tested on a chassis dynamometer using the unified cycle. Dilute emissions were sampled into a portable smog chamber and then photochemically aged under urban-like conditions. For every vehicle, substantial secondary organic aerosol (SOA) formation occurred during cold-start tests, with the emissions from some vehicles generating as much as 6 times the amount of SOA as primary particulate matter after three hours of oxidation inside the chamber at typical atmospheric oxidant levels. Therefore, the contribution of light duty gasoline vehicle exhaust to ambient PM levels is likely dominated by secondary PM production (SOA and nitrate). Emissions from hot-start tests formed about a factor of 3–7 less SOA than cold-start tests. Therefore, catalyst warm-up appears to be an important factor in controlling SOA precursor emissions. The mass of SOA generated by photo-oxidizing exhaust from newer (LEV1 and LEV2) vehicles was only modestly lower (38%) than that formed from exhaust emitted by older (pre-LEV) vehicles, despite much larger reductions in non-methane organic gas emissions. These data suggest that a complex and non-linear relationship exists between organic gas emissions and SOA formation, which is not surprising since SOA precursors are only one component of the exhaust. Except for the oldest (pre-LEV) vehicles, the SOA production could not be fully explained by the measured oxidation of speciated (traditional) SOA precursors. Over the time scale of these experiments, the mixture of organic vapors emitted by newer vehicles appear to be more efficient (higher yielding) in producing SOA than the emissions from older vehicles. About 30% of the non-methane organic gas emissions from the newer (LEV1 and LEV2) vehicles could not be speciated, and the majority of the SOA formed from these vehicles appears to be associated with these unspeciated organics. These results for light-duty gasoline vehicles contrast with the results from a companion study of on-road heavy-duty diesel trucks; in that study late model (2007 and later) diesel trucks equipped with catalyzed diesel particulate filters emitted very little primary PM, and the photo-oxidized emissions produced negligible amounts of SOA.

scholarly journals Quantification of secondary organic aerosol in an Australian urban location

2011 ◽  
Vol 8 (2) ◽  
pp. 115 ◽  
Author(s):  
Melita Keywood ◽  
Helen Guyes ◽  
Paul Selleck ◽  
Rob Gillett
Keyword(s):  
Particulate Matter ◽  
Air Quality ◽  
Elemental Carbon ◽  
Secondary Organic Aerosol ◽  
Fine Particulate Matter ◽  
Ambient Air ◽  
Organic Aerosol ◽  
Quality Data ◽  
Combustion Source ◽  
First Time

Environmental contextParticulate matter is detrimental to human health necessitating air quality standards to ensure that populations are not exposed to harmful levels of air pollutants. We quantified, for the first time in an Australian city, secondary organic aerosol produced in the atmosphere by chemical reactions, and show that it constitutes a significant fraction of the fine particulate matter. Secondary organic aerosol should be considered in regulations to control particulate matter and ozone. AbstractThe contribution of secondary organic aerosol (SOA) to particulate mass (PM) in an Australian urban airshed is quantified for the first time in this work. SOA is estimated indirectly using the elemental carbon tracer method. The contribution of primary organic carbon (OC) to PM is determined using ambient air quality data, which is used to indicate photochemical activity and as a tracer for a general vehicular combustion source. In addition, levoglucosan concentrations were used to determine the contribution of wood heater emissions to primary OC. The contribution of bushfire smoke to primary OC emissions was determined from the organic and elemental carbon (OC/EC) ratios measured in bushfire source samples. The median annual SOA concentration determined in this work was 1.1 µg m–3, representing ~13% of PM2.5 median concentrations on an annual basis (assuming a ratio of organic mass (OM) to OC of 1.6). Significantly higher SOA concentrations were determined when bushfire smoke affected the airshed; however, the SOA fraction of PM2.5 was greatest during the autumn and early winter months when the formation of inversions allows build up of particles produced by domestic wood-heater emissions.

Particulate matter emissions over the oil sands regions in Alberta, Canada

2017 ◽  
Vol 25 (4) ◽  
pp. 432-443 ◽  
Author(s):  
Zhenyu Xing ◽  
Ke Du
Keyword(s):  
Particulate Matter ◽  
Oil Sands ◽  
Secondary Organic Aerosol ◽  
Ambient Air ◽  
Organic Aerosol ◽  
Open Pit ◽  
Open Pit Mining ◽  
Formation Mechanisms ◽  
Aerosol Formation ◽  
Secondary Aerosol

Particulate matter (PM) emissions from the expanded oil sands development in Alberta are becoming a focus among the aerosol science community because of its significant negative impact on the regional air quality and climate change. Open-pit mining, petroleum coke (petcoke) dust, and the transportation of oil sands and waste materials by heavy-duty trucks on unpaved roads could release PM into the air. Incomplete combustion of fossil fuels by engines and stationary boilers leads to the formation of carbonaceous aerosols. In addition, wildfire and biogenic emissions surrounding the oil sands regions also have the potential to contribute primary PM to the ambient air. Secondary organic aerosol formation has been revealed as an important source of PM over nearby and distant areas from the oil sands regions. This review summarizes the primary PM sources and some secondary aerosol formation mechanisms that are linked to oil sands development. It also reviews the approaches that can be applied in aerosol source apportionment. Meteorological condition is an important factor that may influence the primary PM emission and secondary aerosol formation in Alberta’s oil sands regions. Current concern should not be limited to the primary emission of atmospheric PM. Secondary formation of aerosols, especially secondary organic aerosol originating from photochemical reaction, should also be taken into consideration. To obtain a more comprehensive understanding of the sources and amount of PM emissions based on the bottom-up emission inventory approach, investigations on how to reduce the uncertainty in determination of real-world PM emission factors for the variable sources are needed. Long-range transport trajectories of fine PM from Alberta’s oil sands regions remain unknown.

scholarly journals Secondary Organic Aerosol Formation from Gasoline and Diesel Vehicle Exhaust under Light and Dark Condition

2021 ◽  
Author(s):  
Yu Morino ◽  
Ying Li ◽  
Yuji Fujitani ◽  
Kei Sato ◽  
Satoshi Inomata ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Secondary Organic Aerosol ◽  
Organic Aerosol ◽  
Atmospheric Particulate Matter ◽  
Urban Air ◽  
Dark Condition ◽  
Aerosol Formation ◽  
Vehicle Exhaust ◽  
Atmospheric Particulate ◽  
Diesel Vehicle

Secondary organic aerosol (SOA) formed from vehicle exhaust contributes substantially to the atmospheric particulate matter in urban air but there still remain uncertainties in the simulation of the SOA by...

Multivariate optimization of a simple and sensitive method for the determination of secondary biogenic organic compounds in airborne particles

2016 ◽  
Vol 8 (20) ◽  
pp. 4047-4055 ◽  
Author(s):  
Athanasia I. Mologousi ◽  
Evangelos B. Bakeas
Keyword(s):  
Organic Compounds ◽  
Secondary Organic Aerosol ◽  
Organic Aerosol ◽  
Airborne Particles ◽  
Multivariate Optimization ◽  
Sensitive Method

In this study, a simple and sensitive method for the determination of biogenic secondary organic aerosol (SOA) in airborne particles, has been optimized and validated.

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