scholarly journals A comparison of direct measurement and model simulation of total flux of volatile organic compounds from the subsurface to the atmosphere under natural field conditions

2003 ◽  
Vol 39 (10) ◽  
Author(s):  
Fred D. Tillman ◽  
Jee-Won Choi ◽  
James A. Smith
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Direct Measurement ◽  
Model Simulation ◽  
Field Conditions ◽  
Total Flux ◽  
Natural Field ◽  
Volatile Organic

scholarly journals Importance of biogenic volatile organic compounds to acyl peroxy nitrates (APN) production in the southeastern US during SOAS 2013

2019 ◽  
Vol 19 (3) ◽  
pp. 1867-1880 ◽  
Author(s):  
Shino Toma ◽  
Steve Bertman ◽  
Christopher Groff ◽  
Fulizi Xiong ◽  
Paul B. Shepson ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Gas Phase ◽  
Organic Compounds ◽  
Model Simulation ◽  
Statistical Correlation ◽  
Organic Nitrates ◽  
Biogenic Volatile Organic Compounds ◽  
The North ◽  
Southeastern Us ◽  
Volatile Organic

Abstract. Gas-phase atmospheric concentrations of peroxyacetyl nitrate (PAN), peroxypropionyl nitrate (PPN), and peroxymethacryloyl nitrate (MPAN) were measured on the ground using a gas chromatograph electron capture detector (GC-ECD) during the Southern Oxidants and Aerosols Study (SOAS) 2013 campaign (1 June to 15 July 2013) in Centreville, Alabama, in order to study biosphere–atmosphere interactions. Average levels of PAN, PPN, and MPAN were 169, 5, and 9 pptv, respectively, and the sum accounts for an average of 16 % of NOy during the daytime (10:00 to 16:00 local time). Higher concentrations were seen on average in air that came to the site from the urban NOx sources to the north. PAN levels were the lowest observed in ground measurements over the past two decades in the southeastern US. A multiple regression analysis indicates that biogenic volatile organic compounds (VOCs) account for 66 % of PAN formation during this study. Comparison of this value with a 0-D model simulation of peroxyacetyl radical production indicates that at least 50 % of PAN formation is due to isoprene oxidation. MPAN has a statistical correlation with isoprene hydroxynitrates (IN). Organic aerosol mass increases with gas-phase MPAN and IN concentrations, but the mass of organic nitrates in particles is largely unrelated to MPAN.

scholarly journals Emission of Volatile Organic Compounds After Herbivory from Trifolium pratense (L.) Under Laboratory and Field Conditions

2009 ◽  
Vol 35 (11) ◽  
pp. 1335-1348 ◽  
Author(s):  
Rose N. Kigathi ◽  
Sybille B. Unsicker ◽  
Michael Reichelt ◽  
Jürgen Kesselmeier ◽  
Jonathan Gershenzon ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Trifolium Pratense ◽  
Field Conditions ◽  
Volatile Organic ◽  
Trifolium Pratense L

Biogenic Volatile Organic Compounds Emission of Brazilian Atlantic Tree Grown Under Elevated Ozone in Ambient Controlled and Field Conditions

2020 ◽  
Vol 105 (6) ◽  
pp. 958-966
Author(s):  
Giselle da Silva Pedrosa ◽  
Debora Pinheiro de Oliveira ◽  
Josiane Valéria Soares Bison ◽  
Ricardo Marcondes Bugarelli ◽  
Luciano Soares Cruz ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Field Conditions ◽  
Biogenic Volatile Organic Compounds ◽  
Elevated Ozone ◽  
Volatile Organic
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