Microwave Plasma Torch Desorption Ionization Mass Spectrometry for Chemical Characterization of Aromatic Secondary Organic Aerosol DOI

Xihe Yang,

Fengjian Chu,

J.C. Flores Quan

et al.

Talanta, Journal Year: 2024, Volume and Issue: 283, P. 127155 - 127155

Published: Nov. 4, 2024

Language: Английский

Real-World Emissions and Formation Mechanism of IVOCs from Biodiesel-Fueled Agricultural Machinery DOI
Min Cui, Xiaoxiao Hou, Yuanxin Han

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

The use of biodiesel as an alternative to diesel remains controversial because its potential impact on organic matter emissions. Herein, intermediate-volatility compounds (IVOCs) from five agricultural machines (AMs) using three types fuels (pure (B0), mixed with 5 and 20% (B5 B20), respectively) were collected analyzed. following results obtained: (1) Reasonable ratios reduced IVOC average emission factors IVOCs (EFIVOCs) B5-fueled AMs 485.8 ± 272.9 mg/kg fuel, 24.2% reduction that B0-fueled AMs. (2) chemical compositions secondary aerosol formation potentials (SOAFPs) changed during fueled by different blend ratios. highest EFIVOCs values for B5- B20-fueled within the Bin12 interval. Consequently, SOAFPs n-alkanes lower than those B0. (3) oxygen contents B5 B20 increased their combustion efficiency, long-chain carbons in pyrolyzed fragmented. However, high-viscosity inhibited engine performance more volatile was condensed adsorbed unburned fuel. In future, some technologies should be developed reduce viscosity biodiesel.

Language: Английский

Citations

0
Contribution of Vehicular Evaporative S/IVOC emission to SOA formation in China DOI
Zhaoyang Fan, Yajun Wu, Yuwei Xie

et al.

Atmospheric Environment, Journal Year: 2025, Volume and Issue: unknown, P. 121128 - 121128

Published: Feb. 1, 2025

Language: Английский

Citations

0
Intermediate and semi-volatility organic compounds (I/SVOCs) emission from Chinese vehicles: volatility distribution, influencing factors, and implication for SOA formation DOI
Yajun Wu,

Peiji Liu,

Yajie Wang

et al.

Frontiers of Environmental Science & Engineering, Journal Year: 2025, Volume and Issue: 19(5)

Published: April 2, 2025

Language: Английский

Citations

0
Real world particle size distribution from vehicle fleet and implication on emission control DOI Creative Commons
Fuyang Zhang, Jianfei Peng, Jinsheng Zhang

et al.

Published: April 28, 2025

Abstract Particle size distribution (PSD) of vehicular emissions is crucial for assessing their impacts on air quality and human health. However, real-world PSD data from vehicle fleets scarce. Here, we conducted a two-week tunnel measurement fleet emission. The estimated fleet-average emission factor particle number (PN) was 2.6 × 10 14 kg-fuel −1 . peaked in nucleation mode, indicating significant role volatile particles likely formed outside exhaust pipes. Diurnal variations PN correlated with traffic flow; however, high-emitting diesel vehicles, particularly those other cities, caused notable spikes black carbon during off-peak hours. Positive matrix factorization analysis confirms this critical vehicles also reveals the dominance non-exhaust PM 2.5 This study highlights importance stricter regulations measures to mitigate mode particles.

Language: Английский

Citations

0
Emissions and potential tracer screening of semivolatile/intermediate-volatility organic compounds from urban vehicle fleets DOI Creative Commons
Yajun Wu, Jianfei Peng,

Xiaoguo Wang

et al.

npj Climate and Atmospheric Science, Journal Year: 2025, Volume and Issue: 8(1)

Published: May 17, 2025

Language: Английский

Citations

0
Microwave Plasma Torch Desorption Ionization Mass Spectrometry for Chemical Characterization of Aromatic Secondary Organic Aerosol DOI

Xihe Yang,

Fengjian Chu,

J.C. Flores Quan

et al.

Talanta, Journal Year: 2024, Volume and Issue: 283, P. 127155 - 127155

Published: Nov. 4, 2024

Language: Английский

Citations

1