Wakamatsu, S.; et al. Vertical distribution of ozone and VOCs in the low boundary layer of Mexico City. Atmos. Chem. Phys volatile organic compounds and their applications within the

Layers, Photodissociation, Abstract Photolysis of oxygenated volatile organic compounds (OVOCs) produces a primary source of free radicals, including OH and inorganic and organic peroxy radicals (HO 2 and RO 2 ), consequently increasing photochemical ozone production.

Environmental context Volatile organic compounds are precursors of ozone, a pollutant with adverse environmental effects. It is important to determine the associations between the various sources of volatile organic compounds and ozone levels because emission controls are based on sources. We estimated the contributions of specific sources of volatile organic compounds on ozone levels using

2022/8/24 · Known as tropospheric or "ground-level" ozone, this gas is harmful to human heath and the environment. Since it forms from emissions of volatile organic compounds (VOCs)

DOI: 10.1016/j.chemosphere.2022.134852 Corpus ID: 248597015; Volatile organic compounds and their contribution to ground-level ozone formation in a tropical urban environment. @article{Zulkifli2022VolatileOC, title={Volatile organic compounds and their contribution to ground-level ozone formation in a tropical urban environment.}, author={Mohd Faizul Hilmi Zulkifli and Nor Syamimi Sufiera Limi

VOCs are a group of carbon-based chemicals that easily evaporate at room temperature. Many common household materials and products, such as paints and cleaning products, give off VOCs. Common VOCs include acetone, benzene, ethylene glycol, formaldehyde, methylene chloride, perchloroethylene, toluene and xylene. Different VOCs have different health effects, and range

Chengdu is a megacity in the southwest of China with high ozone (O 3) mixing ratio.Observation of volatile organic compounds (VOCs), NO 2 and O 3 with high temporal resolution was conducted in Chengdu to investigate the chemical processes and causes of high O 3 levels. The hourly mixing ratios of VOCs, NO 2, and O 3 were monitored by an online system from 28 August to 7 October, 2016.

Lowering Ozone: Effect of Controlling Compounds and Chapter 5 Volatile Organic Nitrogen Oxides INTRODUCTION' Ozone is not emitted; rather it is produced in the atmosphere from reactions involving two ' 'precur-sor" pollutants: volatile organic compounds (VOCs) and nitrogen oxides (NO X). To develop effective

In our present study we tested the health effects among women of controlled exposures to volatile organic compounds (VOCs), with and without ozone (O3), and psychological stress. Each subject was exposed to the following three conditions at 1-week intervals (within-subject factor): VOCs (26 mg/m3), VOCs + O3 (26 mg/m3 + 40 ppb), and ambient air with a 1-min spike of VOCs (2.5 mg/m3). As a

2022/6/27 · Impact of Biogenic Volatile Organic Compounds Emission on Ozone Air Quality in the Sichuan Basin Previous studies have suggested that severe O 3 pollution over China in the year of is in large part due to protracted unfavorable meteorology (featured by hot and stagnant weather conditions) and climate-driven elevated BVOC emissions ( Wu et al., ).

2022/6/24 · Plants emit a broad number of Biogenic Volatile Organic Compounds (BVOCs) that can impact urban ozone (O3) production. Conversely, the O3 is a phytotoxic pollutant that causes unknown alterations in BVOC emissions from native plants. In this sense, here, we characterized the constitutive and O3-induced BVOCs for two (2dO3) and four (4dO3) days of

Observation of volatile organic compounds (VOCs), NO 2 and O 3 with high temporal resolution was conducted in Chengdu to investigate the chemical processes and causes of high O 3 Characteristics of volatile organic compounds, NO 2 , and effects on ozone formation at a site with high ozone level in Chengdu

Ambient volatile organic compounds (VOCs) were continuously measured from February to October at an urban site in Wuhan. The characteristics and sources of VOCs and their effect on ozone (O3) formation were studied for the first time. The total VOC levels in Wuhan were relatively low, and

2022/9/14 · The formation of the Ozone molecule. Three oxygen atoms are loosely linked together to form the pale blue allotrope of oxygen known as ozone. It is an unstable gas that progressively breaks down into oxygen molecules. Even though ozone is extremely important to humans, it has a pungent smell. Three oxygen atoms make up the highly reactive gas

2022/1/4 · Volatile organic compounds (VOCs) are emitted as gases from certain solids or liquids. VOCs include a variety of chemicals, some of which may have short- and long-term adverse health effects. Concentrations of many VOCs are consistently higher indoors (up to ten times higher) than outdoors. VOCs are emitted by a wide array of products numbering

In China, emissions of ozone (O3)-producing pollutants have been targeted for mitigation to reduce O3 pollution. However, the observed O3 decrease is slower than/opposite to expectations affecting the health of millions of people. For a better understanding of this failure and its connection with anthropogenic emissions, we quantify the summer O3 trends that would have occurred had the weather

2022/7/7 · The effects of ozone on individual plants can then have negative impacts on ecosystems, including: loss of species diversity (less variety of plants, animals, insects, and

10/19 · Photolysis of oxygenated volatile organic compounds (OVOCs) produces a primary source of free radicals, including OH and inorganic and organic peroxy radicals (HO₂ and RO₂), consequently increasing photochemical ozone production. The amplification of radical cycling through OVO

In our present study we tested the health effects among women of controlled exposures to volatile organic compounds (VOCs), with and without ozone (O3), and psychological stress. Each subject was exposed to the following three conditions at 1-week intervals (within-subject factor): VOCs (26 mg/m3), VOCs + O3 (26 mg/m3 + 40 ppb), and ambient air with a 1-min

2022/6/30 · Volatile organic compounds (VOCs) emissions have become a key environmental concern due to adverse effects on health and environment 1,2,3,4.Extended human exposure to VOCs emissions (e.g

Assessing the role of volatile organic compounds (VOCs) in production of ozone and secondary organic aerosol (SOA) is especially important in light of ongoing policy goals. Here, we estimated the ozone formation potential (OFP) and SOA formation potential (SOAP) of anthropogenic and biogenic VOC emissions to evaluate (1) anthropogenic VOCs and associated sectors that dominate OFP and SOAP and