Exploring condensable organic vapors and their co-occurrence with PM<sub>2.5</sub>and O<sub>3</sub>in winter in Eastern China

Liu, Yuliang; Liu, Chong; Nie, Wei; Li, Yuanyuan; Ge, Dafeng; Chen, Liangduo; Zhu, Congzhi; Wang, Lei; Zhang, Yuxuan; Liu, Tengyu; Qi, Ximeng; Wang, Jiaping; Huang, Dandan; Wang, Zhe; Yan, Chao; Chi, Xuguang; Ding, Aijun

doi:10.1039/d2ea00143h

Cited by 6 publications

(2 citation statements)

References 101 publications

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“…Most of the data were measured at the Station for Observing Regional Processes of the Earth System (SORPES) in Nanjing or indirectly calculated from observations at that site. A detailed description of the station can be found in previous studies. − At this station, VOC precursors were measured by a proton transfer reaction time-of-flight mass spectrometer (PTR-ToF-MS). ,,, H 2 SO 4 and OOMs were measured by the nitrate-CIMS . The PNSDs were measured by a scanning mobility particle sizers spectrometer (SMPS), covering particle sizes in the range of 4–500 nm .…”

Section: Methods and Datamentioning

confidence: 99%

“…58−60 At this station, VOC precursors were measured by a proton transfer reaction time-of-flight mass spectrometer (PTR-ToF-MS). 21,27,61,62 H 2 SO 4 and OOMs were measured by the nitrate-CIMS. 27 The PNSDs were measured by a scanning mobility particle sizers spectrometer (SMPS), covering particle sizes in the range of 4−500 nm.…”

Section: Data Sets and Model Evaluation Protocolsmentioning

confidence: 99%

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Modeling the Formation of Organic Compounds across Full Volatility Ranges and Their Contribution to Nanoparticle Growth in a Polluted Atmosphere

Li,

Zhao,

Yin

et al. 2023

Environ. Sci. Technol.

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Nanoparticle growth influences atmospheric particles' climatic effects, and it is largely driven by low-volatility organic vapors. However, the magnitude and mechanism of organics' contribution to nanoparticle growth in polluted environments remain unclear because current observations and models cannot capture organics across full volatility ranges or track their formation chemistry. Here, we develop a mechanistic model that characterizes the full volatility spectrum of organic vapors and their contributions to nanoparticle growth by coupling advanced organic oxidation modeling and kinetic gas-particle partitioning. The model is applied to Nanjing, a typical polluted city, and it effectively captures the volatility distribution of low-volatility organics (with saturation vapor concentrations <0.3 μg/m 3 ), thus accurately reproducing growth rates (GRs), with a 4.91% normalized mean bias. Simulations indicate that as particles grow from 4 to 40 nm, the relative fractions of GRs attributable to organics increase from 59 to 86%, with the remaining contribution from H 2 SO 4 and its clusters. Aromatics contribute much to condensable organic vapors (∼37%), especially low-volatility vapors (∼61%), thus contributing the most to GRs (32−46%) as 4−40 nm particles grow. Alkanes also contribute 19−35% of GRs, while biogenic volatile organic compounds contribute minimally (<13%). Our model helps assess the climatic impacts of particles and predict future changes.

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Section: Methods and Datamentioning

confidence: 99%

Section: Data Sets and Model Evaluation Protocolsmentioning

confidence: 99%

Modeling the Formation of Organic Compounds across Full Volatility Ranges and Their Contribution to Nanoparticle Growth in a Polluted Atmosphere

Li,

Zhao,

Yin

et al. 2023

Environ. Sci. Technol.

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Seasonal distributions and possible sources of low molecular weight organic acids in PM2.5 from a typical mining city after decade green mining developing in Southeastern Hubei, Central China

Liu,

Kawamura,

Kunwar

et al. 2024

Atmospheric Environment

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The Pivotal Role of Heavy Terpenes and Anthropogenic Interactions in New Particle Formation on the Southeastern Qinghai-Tibet Plateau

Liu,

Nie,

et al. 2024

Environ. Sci. Technol.

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Aerosol particles originating from the Qinghai-Tibet Plateau (QTP) readily reach the free troposphere, potentially affecting global radiation and climate. Although new particle formation (NPF) is frequently observed at such high altitudes, its precursors and their underlying chemistry remain poorly understood. This study presents direct observational evidence of anthropogenic influences on biogenic NPF on the southeastern QTP, near the Himalayas. The mean particle nucleation rate (J 1.7 ) is 2.6 cm −3 s −1 , exceeding the kinetic limit of sulfuric acid (SA) nucleation (mean SA: 2.4 × 10 5 cm −3 ). NPF is predominantly driven by highly oxygenated organic molecules (HOMs), possibly facilitated by low SA levels. We identified 1538 ultralow-volatility HOMs driving particle nucleation and 764 extremely low-volatility HOMs powering initial particle growth, with mean total concentrations of 1.5 × 10 6 and 3.7 × 10 6 cm −3 , respectively. These HOMs are formed by atmospheric oxidation of biogenic precursors, unexpectedly including sesquiterpenes and diterpenes alongside the commonly recognized monoterpenes. Counterintuitively, over half of HOMs are organic nitrates, mainly produced by interacting with anthropogenic NO x via RO 2 +NO terminations or NO 3 -initiated oxidations. These findings advance our understanding of NPF mechanisms in this climatesensitive region and underscore the importance of heavy terpene and NO x -influenced chemistry in assessing anthropogenic-biogenic interactions with climate feedbacks.

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Exploring condensable organic vapors and their co-occurrence with PM_2.5and O₃in winter in Eastern China

Abstract: Oxygenated organic molecules (OOMs) are important oxidation products of volatile organic compounds (VOCs) and act as key condensable vapors for new particle formation (NPF) and secondary organic aerosol (SOA) in...

Cited by 6 publications

References 101 publications

Modeling the Formation of Organic Compounds across Full Volatility Ranges and Their Contribution to Nanoparticle Growth in a Polluted Atmosphere

Modeling the Formation of Organic Compounds across Full Volatility Ranges and Their Contribution to Nanoparticle Growth in a Polluted Atmosphere

Seasonal distributions and possible sources of low molecular weight organic acids in PM2.5 from a typical mining city after decade green mining developing in Southeastern Hubei, Central China

The Pivotal Role of Heavy Terpenes and Anthropogenic Interactions in New Particle Formation on the Southeastern Qinghai-Tibet Plateau

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Exploring condensable organic vapors and their co-occurrence with PM2.5and O3in winter in Eastern China

Abstract: Oxygenated organic molecules (OOMs) are important oxidation products of volatile organic compounds (VOCs) and act as key condensable vapors for new particle formation (NPF) and secondary organic aerosol (SOA) in...

Cited by 6 publications

References 101 publications

Modeling the Formation of Organic Compounds across Full Volatility Ranges and Their Contribution to Nanoparticle Growth in a Polluted Atmosphere

Modeling the Formation of Organic Compounds across Full Volatility Ranges and Their Contribution to Nanoparticle Growth in a Polluted Atmosphere

Seasonal distributions and possible sources of low molecular weight organic acids in PM2.5 from a typical mining city after decade green mining developing in Southeastern Hubei, Central China

The Pivotal Role of Heavy Terpenes and Anthropogenic Interactions in New Particle Formation on the Southeastern Qinghai-Tibet Plateau

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Product

Resources

About

Exploring condensable organic vapors and their co-occurrence with PM_2.5and O₃in winter in Eastern China