Impact on ground-level ozone formation by emission characterization of volatile organic compounds from a flex-fuel light-duty vehicle fleet in a traffic tunnel in Rio de Janeiro, Brazil

2020 ◽  
Author(s):  
Ednardo Moreira Santos ◽  
Débora de Almeida Azevedo
Keyword(s):  
Ground Level ◽  
Ozone Formation ◽  
Ground Level Ozone ◽  
Light Duty ◽  
Volatile Organic ◽  
Traffic Tunnel ◽  
Light Duty Vehicle ◽  
Flex Fuel ◽  
Vehicle Fleet

scholarly journals Contribution of solvents from road marking paints to tropospheric ozone formation

2016 ◽  
Vol 15 (1) ◽  
pp. 007-018 ◽  
Author(s):  
Tomasz Burghardt ◽  
Anton Pashkevich ◽  
Lidia Żakowska
Keyword(s):  
Tropospheric Ozone ◽  
Western Europe ◽  
Ground Level ◽  
Solar Irradiation ◽  
Ozone Formation ◽  
Potential Contribution ◽  
Ground Level Ozone ◽  
Ozone Formation Potential ◽  
Volatile Organic ◽  
Road Marking

Solventborne road marking paints are meaningful sources of Volatile Organic Compounds (VOCs), which under solar irradiation affect formation of tropospheric ozone, a signif cant pulmonary irritant and a key pollutant responsible for smog formation. Influence of particular VOCs on ground-level ozone formation potential, quantified in Maximum Incremental Reactivities (MIR), were used to calculate potential contribution of solvents from road marking paints used in Poland to tropospheric ozone formation. Based on 2014 data, limited only to roads administered by General Directorate for National Roads and Motorways (GDDKiA), emissions of VOCs from road marking paints in Poland were about 494 838 kg, which could lead to production of up to 1 003 187 kg of ropospheric ozone. If aromatic-free solventborne paints based on ester solvents, such as are commonly used in Western Europe, were utilised, VOC emissions would not be lowered, but potentially formed ground-level ozone could be limited by 50-70%. Much better choice from the perspective of environmental protection would be the use of waterborne road marking paints like those mandated in Scandinavia – elimination of up to 82% of the emitted VOCs and up to 95% of the potentially formed tropospheric ozone could be achieved.

scholarly journals Is the Shale Boom Reversing Progress in Curbing Ozone Pollution?

Eos ◽  
2015 ◽  
Vol 96 ◽  
Author(s):  
Gunnar W. Schade ◽  
Geoffrey S. Roest
Keyword(s):  
Organic Compounds ◽  
Oil And Gas ◽  
Ground Level ◽  
Ozone Formation ◽  
Shale Oil ◽  
Ozone Pollution ◽  
Gas Field ◽  
Ground Level Ozone ◽  
Volatile Organic ◽  
Oil And Gas Field

Concentrations of volatile organic compounds—precursors to ground-level ozone formation—are on the rise in areas over and downwind of a major shale oil and gas field in Texas.

Aromatic volatile organic compounds and their role in ground-level ozone formation in Russia

2017 ◽  
Vol 474 (1) ◽  
pp. 599-603 ◽  
Author(s):  
E. V. Berezina ◽  
K. B. Moiseenko ◽  
A. I. Skorokhod ◽  
N. F. Elansky ◽  
I. B. Belikov
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Ground Level ◽  
Ozone Formation ◽  
Ground Level Ozone ◽  
Volatile Organic

scholarly journals Ozone formation sensitivity study using machine learning coupled with reactivity of VOC species

2021 ◽  
Author(s):  
Junlei Zhan ◽  
Yongchun Liu ◽  
Wei Ma ◽  
Xin Zhang ◽  
Xuezhong Wang ◽  
...  
Keyword(s):  
Positive Response ◽  
Meteorological Factors ◽  
Ground Level ◽  
Sensitivity Study ◽  
Computationally Efficient ◽  
Timely Manner ◽  
Ground Level Ozone ◽  
Volatile Organic ◽  
Response To Temperature ◽  
Better Than

Abstract. The formation of ground-level ozone (O3) is dependent on both atmospheric chemical processes and meteorological factors. Traditional models have difficulty assessing O3 formation sensitivity in a timely manner due to the limitations of flexibility and computational efficiency. In this study, a random forest (RF) model coupled with the reactivity of volatile organic compound (VOC) species was used to investigate the O3 formation sensitivity in Beijing from 2014 to 2016, and evaluate the relative importance (RI) of chemical and meteorological factors to O3 formation. The results showed that the O3 prediction performance using initial concentrations of VOC species (R2 = 0.87) was better than that using total VOCs (TVOCs) concentrations (R2 = 0.77). Meanwhile, the RIs of VOC species correlated well with their O3 formation potentials (OFPs). O3 formation presented a negative response to NOx, PM2.5 and relative humidity, and a positive response to temperature, solar radiation and VOCs. The O3 isopleth curves calculated by the RF model were generally comparable with those calculated by the box model. O3 formation shifted from a VOC-limited regime to a transition regime from 2014 to 2016. This study demonstrates that the RF model coupled with the initial concentrations of VOC species could provide an accurate, flexible, and computationally efficient approach for O3 sensitivity analysis.

Electrification of light-duty vehicle fleet alone will not meet mitigation targets

2020 ◽  
Vol 10 (12) ◽  
pp. 1102-1107
Author(s):  
Alexandre Milovanoff ◽  
I. Daniel Posen ◽  
Heather L. MacLean
Keyword(s):  
Light Duty ◽  
Light Duty Vehicle ◽  
Vehicle Fleet
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