scholarly journals Evidence for the role of organics in aerosol particle formation under atmospheric conditions

2010 ◽  
Vol 107 (15) ◽  
pp. 6646-6651 ◽  
Author(s):  
A. Metzger ◽  
B. Verheggen ◽  
J. Dommen ◽  
J. Duplissy ◽  
A. S. H. Prevot ◽  
...  
Keyword(s):  
Aerosol Particle ◽  
Particle Formation ◽  
Atmospheric Conditions

scholarly journals The Role of Organic Acids in New Particle Formation from Methanesulfonic Acid and Methylamine

2021 ◽  
Author(s):  
Rongjie Zhang ◽  
Jiewen Shen ◽  
Hong-Bin Xie ◽  
Jingwen Chen ◽  
Jonas Elm
Keyword(s):  
Organic Acids ◽  
Cluster Formation ◽  
Methanesulfonic Acid ◽  
Particle Formation ◽  
Structural Factors ◽  
Atmospheric Conditions ◽  
New Particle Formation ◽  
Free Energies ◽  
Limited Temperature

Abstract. Atmospheric organic acids (OAs) are expected to enhance methanesulfonic acid (MSA)-driven new particle formation (NPF). However, the exact role of OAs in MSA-driven NPF remains unclear. Here, we employed a two-step strategy to probe the role of OAs in MSA-methylamine (MA) NPF. Initially, we evaluated the enhancing potential of 12 commonly detected OAs in ternary MA-MSA-OA cluster formation by considering the formation free energies of the (MSA)1(MA)1(OA)1 clusters and the atmospheric concentrations of the OAs. It was found that formic acid (ForA) has the highest potential to stabilize the MA-MSA clusters. The high enhancing potential of ForA results from its acidity, structural factors such as no intramolecular H-bonds and high atmospheric abundance. The second step is to extend the MSA-MA-ForA system to larger cluster sizes. The results indicate that ForA can indeed enhance MSA-MA NPF at atmospheric conditions (the upper limited temperature is 258.15 K), indicating that ForA might have an important role in MSA-driven NPF. The enhancing effect of ForA is mainly caused by an increased formation of the (MSA)2(MA)1 cluster, which is involved in the pathway of binary MSA-MA nucleation. Hence, our results indicate that OAs might be required to facilitate MSA-driven NPF in the atmosphere.

Annual and interannual variation in boreal forest aerosol particle number and volume concentration and their connection to particle formation

Tellus B ◽  
2008 ◽  
Vol 60 (4) ◽  
Author(s):  
Miikka Dal Maso ◽  
Antti Hyvärinen ◽  
Mika Komppula ◽  
Peter Tunved ◽  
Veli-Matti Kerminen ◽  
...  
Keyword(s):  
Boreal Forest ◽  
Aerosol Particle ◽  
Interannual Variation ◽  
Particle Number ◽  
Volume Concentration ◽  
Particle Formation

Observations of new aerosol particle formation in a tropical urban atmosphere

2013 ◽  
Vol 71 ◽  
pp. 340-351 ◽  
Author(s):  
Raghu Betha ◽  
Dominick V. Spracklen ◽  
Rajasekhar Balasubramanian
Keyword(s):  
Aerosol Particle ◽  
Particle Formation ◽  
Urban Atmosphere

The kinetics of aerosol particle formation and removal in NPP severe accidents

2016 ◽  
Author(s):  
Mikhail A. Zatevakhin ◽  
Valentin K. Arefiev ◽  
Sergey E. Semashko ◽  
Rostislav A. Dolganov
Keyword(s):  
Aerosol Particle ◽  
Particle Formation ◽  
Severe Accidents ◽  
Kinetics Of

scholarly journals The Synergistic Role of Sulfuric Acid, Bases, and Oxidized Organics Governing New‐Particle Formation in Beijing

2021 ◽  
Vol 48 (7) ◽  
Author(s):  
Chao Yan ◽  
Rujing Yin ◽  
Yiqun Lu ◽  
Lubna Dada ◽  
Dongsen Yang ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Particle Formation ◽  
New Particle Formation

scholarly journals Laser filament-induced aerosol formation

2013 ◽  
Vol 13 (9) ◽  
pp. 4593-4604 ◽  
Author(s):  
H. Saathoff ◽  
S. Henin ◽  
K. Stelmaszczyk ◽  
M. Petrarca ◽  
R. Delagrange ◽  
...  
Keyword(s):  
Particle Production ◽  
Ambient Air ◽  
Particle Formation ◽  
Oxygen Mixture ◽  
Atmospheric Conditions ◽  
Aerosol Formation ◽  
Experimental Conditions ◽  
Particle Yield ◽  
The Given ◽  
Terawatt Laser

Abstract. Using the aerosol and cloud simulation chamber AIDA, we investigated the laser filament induced particle formation in ambient air, humid synthetic air, humid nitrogen, argon–oxygen mixture, and pure argon in order to simulate the particle formation under realistic atmospheric conditions as well as to investigate the influence of typical gas-phase atmospheric constituents on the particle formation. Terawatt laser plasma filaments generated new particles in the size range 3 to 130 nm with particle production rates ranging from 1 × 107 to 5 × 109 cm−3 plasma s−1 for the given experimental conditions. In all cases the particle formation rates increased exponentially with the water content of the gas mixture. Furthermore, the presence of a few ppb of trace gases like SO2 and α-pinene clearly enhanced the particle yield by number, the latter also by mass. Our findings suggest that new particle formation is efficiently supported by oxidized species like acids generated by the photoionization of both major and minor components of the air, including N2, NH3, SO2 and organics.

Evaluating the Role of the Air-Solution Interface on the Mechanism of Subvisible Particle Formation Caused by Mechanical Agitation for an IgG1 mAb

2016 ◽  
Vol 105 (5) ◽  
pp. 1643-1656 ◽  
Author(s):  
Saba Ghazvini ◽  
Cavan Kalonia ◽  
David B. Volkin ◽  
Prajnaparamita Dhar
Keyword(s):  
Particle Formation ◽  
Mechanical Agitation ◽  
Solution Interface
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