Contribution of reaction of atmospheric amine with sulfuric acid to mixing particle formation from clay mineral DOI
Weina Zhang,

Zhenhao Guo,

Weiping Zhang

и другие.

The Science of The Total Environment, Год журнала: 2022, Номер 821, С. 153336 - 153336

Опубликована: Янв. 22, 2022

Язык: Английский

A new advance in the pollution profile, transformation process, and contribution to aerosol formation and aging of atmospheric amines DOI Creative Commons

Xinlin Shen,

Jiangyao Chen, Guiying Li

и другие.

Environmental Science Atmospheres, Год журнала: 2023, Номер 3(3), С. 444 - 473

Опубликована: Янв. 1, 2023

Atmospheric amines from various sources undergo a variety of homogeneous and heterogeneous reactions to contribute the overall process aerosol particle formation further affect climate.

Язык: Английский

Процитировано

21

Sources, Variations, and Effects on Air Quality of Atmospheric Ammonia DOI
Ziru Lan, Weili Lin, Gang Zhao

и другие.

Current Pollution Reports, Год журнала: 2024, Номер 10(1), С. 40 - 53

Опубликована: Янв. 19, 2024

Язык: Английский

Процитировано

8

A dynamic parameterization of sulfuric acid–dimethylamine nucleation and its application in three-dimensional modeling DOI Creative Commons
Yuyang Li,

Jiewen Shen,

Bin Zhao

и другие.

Atmospheric chemistry and physics, Год журнала: 2023, Номер 23(15), С. 8789 - 8804

Опубликована: Авг. 9, 2023

Abstract. Sulfuric acid (SA) is a governing gaseous precursor for atmospheric new particle formation (NPF), major source of global ultrafine particles, in environments studied around the world. In polluted urban atmospheres with high condensation sinks (CSs), stable SA–amine clusters, such as SA–dimethylamine (DMA) usually initializes intense NPF events. Coagulation scavenging and cluster evaporation are dominant sink processes clusters atmospheres, yet these loss not quantitatively included present parameterizations nucleation. We herein report parameterization SA–DMA nucleation, based on dynamic simulations quantum chemistry calculations, certain simplifications to greatly reduce computational costs. Compared previous nucleation parameterizations, this was able reproduce dependences rates temperature CSs. then incorporated it three-dimensional (3-D) chemical transport model simulate evolution number size distributions. Simulation results showed good consistency observations occurrence events distributions wintertime Beijing represented significant improvement compared that using without coagulation scavenging. Quantitative analysis shows contributes significantly aerosol population during 3-D (>99 % >60 %, respectively). These broaden understanding stress necessity including effects stability simulating simulations. Representing thus likely improve performance apportionment quantification air quality, human health, climate.

Язык: Английский

Процитировано

15

Outbreaks of Ethyl-Amines during Haze Episodes in North China Plain: A Potential Source of Amines from Ethanol Gasoline Vehicle Emission DOI
Xinxin Feng, Cancan Wang,

Yanli Feng

и другие.

Environmental Science & Technology Letters, Год журнала: 2022, Номер 9(4), С. 306 - 311

Опубликована: Март 22, 2022

Amines, as the vital precursors of new particle formation (NPF), have received considerable attention because their outbreak characteristics and sources haze episodes. During hourly resolution observations conducted in Hebei Province, a significant amine concentrations, four times higher burst periods (BPs, 625 ± 383 ng m–3) than that nonburst (NBPs, 164 62.1 m–3), was observed. Especially for ethyl-amines (sum diethylamine triethylamine), its ratio to methyl-amines monomethylamine, dimethylamine, trimethylamine) increased from 0.62 0.35 (NBPs) 3.28 2.04 (BPs). This is first study determine composition profiles three types sources, namely, mobile residential solid fuel combustion (RSFC), biological (BS), exploring ethyl-amines. The widely used ethanol gasoline vehicles (EGVs) Province were found primarily emit ethyl-amines, methyl-amine emitted EGVs (2.82 1.1) much larger RSFC (0.94 0.4) BS (0.87 0.4). Considering widespread application China, role EGV emissions outbreaks requires urgent attention.

Язык: Английский

Процитировано

23

Amine-Enhanced Methanesulfonic Acid-Driven Nucleation: Predictive Model and Cluster Formation Mechanism DOI
Yu Liu, Hong‐Bin Xie, Fangfang Ma

и другие.

Environmental Science & Technology, Год журнала: 2022, Номер 56(12), С. 7751 - 7760

Опубликована: Май 20, 2022

Atmospheric amines are considered to be an effective enhancer for methanesulfonic acid (MSA)-driven nucleation. However, out of the 195 detected atmospheric amines, enhancing potential (EP) has so far only been studied five amines. This severely hinders understanding contribution MSA-driven Herein, a two-step procedure was employed probe EP various on Initially, formation free energies (ΔG) 50 MSA-amine dimer clusters were calculated. Based calculated ΔG values, robust quantitative structure-activity relationship (QSAR) model built and utilized predict values remaining 145 The QSAR identified two guanidino-containing compounds as potentially strongest Second, by employing larger selecting guanidine (Gud) representative. results indicate that Gud indeed EP. Gud-MSA system presents unique clustering mechanism, proceeding via initial (Gud)1(MSA)1 cluster, subsequently cluster collisions with either or (Gud)2(MSA)2 cluster. developed identification provide foundation comprehensively evaluating

Язык: Английский

Процитировано

23

The effect of COVID-19 restrictions on atmospheric new particle formation in Beijing DOI Creative Commons
Chao Yan, Yicheng Shen, Dominik Stolzenburg

и другие.

Atmospheric chemistry and physics, Год журнала: 2022, Номер 22(18), С. 12207 - 12220

Опубликована: Сен. 19, 2022

Abstract. During the COVID-19 lockdown, dramatic reduction of anthropogenic emissions provided a unique opportunity to investigate effects reduced activity and primary on atmospheric chemical processes consequent formation secondary pollutants. Here, we utilize comprehensive observations examine response new particle (NPF) changes in cocktail. We find that main clustering process was unaffected by drastically traffic emissions, rate 1.5 nm particles remained unaltered. However, survival probability enhanced due an increased growth (GR) during lockdown period, explaining NPF earlier studies. For GR at 1.5–3 nm, sulfuric acid (SA) contributor high temperatures, whilst there were unaccounted contributing vapors low temperatures. 3–7 7–15 oxygenated organic molecules (OOMs) played major role. Surprisingly, OOM composition volatility insensitive large change NOx concentration; instead associated rates concentration period mostly caused oxidative capacity. Overall, our findings suggest limited role NPF.

Язык: Английский

Процитировано

22

Biomass Burning Is a Non‐Negligible Source for Ammonium During Winter Haze Episodes in Rural North China: Evidence From High Time Resolution 15N‐Stable Isotope DOI
Xinxin Feng, Yingjun Chen, Huiyun Du

и другие.

Journal of Geophysical Research Atmospheres, Год журнала: 2023, Номер 128(3)

Опубликована: Янв. 26, 2023

Abstract The refined source apportionment of ammonium (NH 4 + ), especially for biomass burning emissions, is unclear. Hourly resolution δ 15 N‐NH values three winter haze episodes (EP1–EP3) were determined in the North China Plain (NCP) 2019 to identify and quantify contribution burning. A reasonable source‐resolved structure NH was obtained after using corrected signatures N considering emissions. time‐series variation vehicle sources identified by more matched better with their tracers (e.g., levoglucosan). non‐negligible NCP found contributed 13.0% ± 11.4% episodes, but special stages as high 29% 11% local emission EP1 23% 15% southwest transportation EP2. redistribution further emphasize its PM 2.5 increased up 5% (without SO 2− NO 3 − ). Considering uniqueness formation new particles, role during should be considered. This study indicates that studies need conducted reduce emissions NCP.

Язык: Английский

Процитировано

12

Measurement of atmospheric nanoparticles: Bridging the gap between gas-phase molecules and larger particles DOI Open Access
Chao Peng,

Chenjuan Deng,

Ting Lei

и другие.

Journal of Environmental Sciences, Год журнала: 2022, Номер 123, С. 183 - 202

Опубликована: Март 11, 2022

Язык: Английский

Процитировано

17

Nanocluster aerosol formation via ozone chemistry on worn clothing: Influence of environmental parameters DOI Creative Commons
Yang Shen, Dusan Licina

Building and Environment, Год журнала: 2024, Номер 256, С. 111474 - 111474

Опубликована: Март 31, 2024

Nanocluster aerosols (NCA, particles <3 nm) are associated with climate feedbacks and potentially human health. Recent studies have revealed the formation of NCA through ozone reaction surfaces, primarily skin lipids, in indoor environments. However, via chemistry on worn clothing, acting as a reservoir for remains unexplored, along influence various environmental factors that may play role subsequent growth. To bridge this knowledge gap, our study experimentally investigated generation from ozone-worn clothing climate-controlled chamber. We examined dependence levels (30 vs. 80 ppb), ammonia (NH3, 300 <150 relative humidity (RH, 40 65%), background air condition (filtered unfiltered air). found ozonolysis contributes to at rate ranging 1010 1011 per hour. Elevated caused threefold increase generation, whereas reduced NH3 were small decrease larger-sized formation. RH total NCA, especially 1.27–1.55 nm. The was inconsistent, probably owing dynamic behavior influenced by two opposing forces: enhanced synergic reactions ozone, chemicals, increased loss coagulation condensation. This highlights nuanced driving ozone-clothing chemistry.

Язык: Английский

Процитировано

3

Theoretical Study of the Synergistic Effect of Hydroxymethanesulfonic Acid With Ammonia/Methylamine/Dimethylamine/Water in the Clustering DOI
Dong‐Ping Chen, Wen Ma, Chunhong Yang

и другие.

International Journal of Quantum Chemistry, Год журнала: 2025, Номер 125(8)

Опубликована: Апрель 10, 2025

ABSTRACT The study investigated the contribution of hydroxymethanesulfonic acid (HMSA) to formation new particles in presence atmospheric bases such as ammonia (A), methylamine (MA), dimethylamine (DMA) and water (W) by DLPNO‐CCSD(T)/aug‐cc‐pVTZ//B3LYP‐D3/aug‐cc‐pVTZ(aug‐cc‐pV(T+d)Z for sulfur) level. Clusters containing HMSA were found easily form six− or eight−membered ring structures via SO—H⋯O (HMSA donor), O—H⋯O/N (W N—H⋯O/N (A/MA/DMA C—H⋯O (MA/DMA donor) hydrogen bonds. Due synergistic interaction between X Y molecules, stability HMSA−X−Y trimers is thermodynamically more favorable than HMSA−X dimers, proton transfer was be exothermic barrier−free trimers. Moreover, increased with higher alkalinity Y, leading decreased evaporation rates. highlights significance HMSA−containing nucleation processes particle formation, suggesting their potential role centers conditions.

Язык: Английский

Процитировано

0