Vertical stratification of volatile organic compounds and their photochemical product formation potential in an industrial urban area

2018 ◽  
Vol 217 ◽  
pp. 327-336 ◽  
Author(s):  
Thi-Dieu-Hien Vo ◽  
Chitsan Lin ◽  
Chien-Erh Weng ◽  
Chung-Shin Yuan ◽  
Chia-Wei Lee ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Urban Area ◽  
Organic Compounds ◽  
Product Formation ◽  
Vertical Stratification ◽  
Formation Potential ◽  
Volatile Organic

Characteristics of roadside volatile organic compounds in an urban area dominated by gasoline vehicles, a case study in Hanoi

Chemosphere ◽  
2020 ◽  
Vol 254 ◽  
pp. 126749 ◽  
Author(s):  
Bich-Thuy Ly ◽  
Yoshizumi Kajii ◽  
Thi-Yen-Lien Nguyen ◽  
Koki Shoji ◽  
Dieu-Anh Van ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Urban Area ◽  
Organic Compounds ◽  
Gasoline Vehicles ◽  
Volatile Organic

scholarly journals Assessment of the impact of the traffic situation in urban area on the amount of volatile organic compounds getting into the cabin of the car on the road

2019 ◽  
Vol 100 ◽  
pp. 00073
Author(s):  
Maria Skrętowicz ◽  
Joanna Świeściak
Keyword(s):  
Volatile Organic Compounds ◽  
Urban Area ◽  
Organic Compounds ◽  
Traffic Situation ◽  
Traffic Intensity ◽  
The Road ◽  
Volatile Organic ◽  
On The Road ◽  
Time Of Travel ◽  
The Impact

In the paper the levels of concentrations of volatile organic compounds getting into car cabin during the driving have been measured. Three series of the tests have been performed. Each series has been carried out in different road situation in terms of traffic intensity. For the tests exploited passenger car, Subaru Impreza was used. Before every series the background measurements was carried out and directly after that, the correct the correct tests were performed. Inside the cabin 14 different organic compounds have been identified. To analyse the change of the concentrations levels between the correct and background test have been calculated. The results indicate that the longer time of travel caused that the driver and passengers are more exposed to highest concentrations of VOCs.

scholarly journals Surface–atmosphere fluxes of volatile organic compounds in Beijing

2020 ◽  
Vol 20 (23) ◽  
pp. 15101-15125
Author(s):  
W. Joe F. Acton ◽  
Zhonghui Huang ◽  
Brian Davison ◽  
Will S. Drysdale ◽  
Pingqing Fu ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Emission Inventory ◽  
Central Area ◽  
High Reactivity ◽  
Emission Rates ◽  
Voc Emissions ◽  
Formation Potential ◽  
Surface Atmosphere ◽  
Volatile Organic

Abstract. Mixing ratios of volatile organic compounds (VOCs) were recorded in two field campaigns in central Beijing as part of the Air Pollution and Human Health in a Chinese Megacity (APHH) project. These data were used to calculate, for the first time in Beijing, the surface–atmosphere fluxes of VOCs using eddy covariance, giving a top-down estimation of VOC emissions from a central area of the city. The results were then used to evaluate the accuracy of the Multi-resolution Emission Inventory for China (MEIC). The APHH winter and summer campaigns took place in November and December 2016 and May and June 2017, respectively. The largest VOC fluxes observed were of small oxygenated compounds such as methanol, ethanol + formic acid and acetaldehyde, with average emission rates of 8.31 ± 8.5, 3.97 ± 3.9 and 1.83 ± 2.0 nmol m−2 s−1, respectively, in the summer. A large flux of isoprene was observed in the summer, with an average emission rate of 5.31 ± 7.7 nmol m−2 s−1. While oxygenated VOCs made up 60 % of the molar VOC flux measured, when fluxes were scaled by ozone formation potential and peroxyacyl nitrate (PAN) formation potential the high reactivity of isoprene and monoterpenes meant that these species represented 30 % and 28 % of the flux contribution to ozone and PAN formation potential, respectively. Comparison of measured fluxes with the emission inventory showed that the inventory failed to capture the magnitude of VOC emissions at the local scale.

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