Simulation of Regional Secondary Organic Aerosol Formation From Monocyclic Aromatic Hydrocarbons Using a Near‐Explicit Chemical Mechanism Constrained by Chamber Experiments DOI

Hutao Lu,

Qi Huang, Jingyi Li

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2024, Volume and Issue: 129(11)

Published: June 1, 2024

Abstract The formation of secondary organic aerosol (SOA) is inextricably linked to the photo‐oxidation aromatic hydrocarbons. However, models still exhibit biases in representing SOA mass and chemical composition. We implemented a box model coupled with near‐explicit photochemical mechanism, Master Chemical Mechanism (MCMv3.3.1), simulate series chamber studies assess simulating from representative monocyclic hydrocarbons, that is, toluene three xylene isomers (TX SOA). underpredicted yields xylenes by 4.7%–100%, which could be improved adjusting saturation vapor pressure (SVP) their oxidation products. After updating SVP values, concentration TX Yangtze River Delta region during summer doubled, there was also an approximate 3% enhancement total SOA. Compared lumped mechanism used for SOA, MCM predicted comparable concentrations but exhibited different volatility distributions states.

Language: Английский

Current status of model predictions of volatile organic compounds and impacts on surface ozone predictions during summer in China DOI Creative Commons

Yongliang She,

Jingyi Li, Xiaopu Lyu

et al.

Atmospheric chemistry and physics, Journal Year: 2024, Volume and Issue: 24(1), P. 219 - 233

Published: Jan. 10, 2024

Abstract. Volatile organic compounds (VOCs) play a crucial role in the formation of tropospheric ozone (O3) and secondary aerosols. VOC emissions are generally considered to have larger uncertainties compared other pollutants, such as sulfur dioxide fine particulate matter (PM2.5). Although predictions O3 PM2.5 been extensively evaluated air quality modeling studies, there has limited reporting on evaluation VOCs, mainly due lack routine measurements at multiple sites. In this study, we utilized from “Towards an Air Toxic Management System China” (ATMSYC) project 28 sites across China assessed predicted concentrations using Community Multiscale Quality (CMAQ) model with widely used Multi-resolution Emission Inventory for (MEIC). The ratio observed total VOCs was found be 0.74 ± 0.40, underpredictions ranging 2.05 50.61 ppbv (5.77 % 85.40 %) 24 A greater bias industrial cities north southwest, Jinan, Shijiazhuang, Lanzhou, Chengdu, Guiyang. terms different components, alkanes, alkenes, non-naphthalene aromatics (ARO2MN), alkynes, formaldehyde (HCHO) had prediction-to-observation ratios 0.53 0.38, 0.51 0.48, 0.31 0.41 0.47, 1.21 1.61, respectively. Sensitivity experiments were conducted assess impact prediction predictions. While emission adjustments improved performance resulting change 0.86 they also exacerbated overprediction relative base case by 0.62 6.27 This study demonstrates that current setups inventories likely underpredict concentrations, underprediction contributes lower China.

Language: Английский

Citations

8
Boosting solar-driven volatile organic compounds desorption via the synergy of NH2-UiO-66 with hollow polypyrrole nanotube DOI

Mengying Feng,

Sijia Chen, Guiying Li

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 464, P. 142503 - 142503

Published: March 21, 2023

Language: Английский

Citations

13
Diurnal emission variation of ozone precursors: Impacts on ozone formation during Sep. 2019 DOI
Yifan Tang, Yuchen Wang,

Xuwu Chen

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 929, P. 172591 - 172591

Published: April 23, 2024

Language: Английский

Citations

4
Rapid Classification of OVOC Samples through a Dynamic Cataluminescence Sensor Coupled with a Code-Triggered Global Plasma-Activated System DOI
Chudong Wei, Cheng Chen, Jiacheng Tang

et al.

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Integrated cataluminescence (CTL) sensing for both identification and quantification has become the focus in gas-sensing methods. With development of an integrated circuit, inspiration from electronic automation provided a convenient approach application CTL sensors. Here, global dielectric barrier discharge plasma system supported by digital code is raised process-oriented sampling gaseous dynamic dual-route reaction rapid quantitative qualitative analysis oxidative volatile organic compounds (OVOCs). Coupled with material Tb-doped yttrium aluminum garnet (Tb-YAG), CTGPA-CTL LODs 8.80 ppm methanol 8.08 ethanol as typical targets, 11 liquor-relative OVOCs were successfully identified blind process. In practice, 4 main types flavors Chinese liquors distinguished obviously different features judged commercial artificial intelligence on signals, providing promising prospect new virtual sensor array wider applications.

Language: Английский

Citations

0
Oxygenated volatile organic compounds in Beijing: Characteristics, chemical reactivity, and source identification DOI
Gen Zhang, Xiaoqi Zhou,

Sun Yifeng

et al.

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 126065 - 126065

Published: March 1, 2025

Language: Английский

Citations

0
Crucial VOCs Influences on Ozone Formation in North China: A Spatial Perspective DOI
Donghui Liu,

Shangfei Hai,

Junlei Meng

et al.

Atmospheric Environment, Journal Year: 2025, Volume and Issue: unknown, P. 121183 - 121183

Published: March 1, 2025

Language: Английский

Citations

0
Electrospinning high-entropy oxide nanofibers for catalytic oxidation of ethyl acetate: unraveling the synergistic role of metal–oxygen bonds DOI
Xin Wang,

Yidian Lin,

Yinye Chen

et al.

Science China Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Language: Английский

Citations

0
Volatile organic compound emissions from typical industries: Implications for the importance of oxygenated volatile organic compounds DOI Open Access
Wenjing Wang, Yunzhi Yan, Hua Fang

et al.

Atmospheric Pollution Research, Journal Year: 2022, Volume and Issue: 14(1), P. 101640 - 101640

Published: Dec. 27, 2022

Language: Английский

Citations

18
Nighttime reactions of a series of unsaturated alcohols with NO3•: Kinetics, products and mechanisms study DOI

Yanyong Xu,

Shengrui Tong, Weiran Li

et al.

Journal of Environmental Sciences, Journal Year: 2024, Volume and Issue: 151, P. 331 - 346

Published: April 6, 2024

Language: Английский

Citations

3
The causal links between long-term exposure to major chemical components of PM2.5 and overall outpatient visits in mainland China: A nationwide study in the difference-in-differences framework DOI Creative Commons
Shuaiqi Zhang,

Zhibing Chen,

Zhicheng Du

et al.

Journal of Advanced Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Although the adverse health effects of PM2.5 exposure has been well documented, evidence its effect on overall outpatient visits was still limited. Besides, get complicated due to various components within particles. So far, little is known about relationship between and visits. This study aims evaluate causal relationships long-term primary chemical visits, while estimating mixture relative contribution components. Based nationwide provincial-level surveillance data in China well-validated simulations concentration, we employed Difference-In-Differences (DID) approach used a Bayesian Weighted Quantile Sum (BWQS) regression assess We found 20.44% increase risk (IR%) following each InterQuartile Range (IQR) increment concentration. Our estimation further suggested 17.07%, 15.91%, 14.04% for organic matter, sulfate, nitrate, but non-significant increases other However, when considering inter-components correlation, sulfate black carbon contributed most (42.3% 28.1%, respectively) which indicated by 4.84% (95%CI: 1.92%, 7.83%) every unit BWQS index. Additionally, stratified analyses showed stronger association among aged provinces with lower education rates. findings would improve understanding individual impact major may contribute more targeted optimized environmental programs pollution control.

Language: Английский

Citations

0