Reply on RC1 DOI Creative Commons
Mengying Bao

Опубликована: Май 12, 2023

Abstract. Atmospheric humic-like substances (HULIS) affect global radiation balance due to its strong light absorption at the ultraviolet wavelength. The potential sources and molecular compositions of water soluble HULIS a suburb site Yangtze River Delta from 2017 2018 were discussed based on radiocarbon (14C) analysis combining Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS) technique in this study. 14C results showed that averaged non-fossil source contributions 39 ± 8 % 36 6 summer winter, respectively, indicating both fossil played important roles formation HULIS. Van Krevelen diagrams obtained FT-ICR MS proportions tannins-like carbohydrates-like groups higher summer, suggesting significant contribution biogenic secondary organic aerosols (SOA). condensed aromatic structures winter suggested increasing anthropogenic emissions. Molecular composition CHO, CHON, CHOS, CHONS subgroups relatively intensities high O-containing macromolecular oligomers CHO compounds further stronger SOA summer. High-intensity phenolic flavonoids which related biomass burning polycyclic hydrocarbons (PAHs) derivatives fuel combustion emissions found compounds. Besides, two high-intensity containing ring (C9H6O7 C10H5O8) identified samples similar those off-road engine samples, traffic emission was one study site. CHON mainly composed organonitrates or nitro with associated enhanced NOx winter. However, formulas referring N-heterocyclic compounds, produced atmospheric processes involving reduced N species (e.g., ammonium). S-containing organosulfates (OSs) derived precursors, long-chain alkane hydrocarbon, illustrating mixed These findings add our understanding interaction between

Язык: Английский

Impact of fossil and non-fossil fuel sources on the molecular compositions of water-soluble humic-like substances in PM2.5 at a suburban site of Yangtze River Delta, China DOI Creative Commons
Mengying Bao, Yanlin Zhang, Fang Cao

и другие.

Atmospheric chemistry and physics, Год журнала: 2023, Номер 23(14), С. 8305 - 8324

Опубликована: Июль 25, 2023

Abstract. Atmospheric humic-like substances (HULIS) affect the global radiation balance due to their strong light absorption at ultraviolet wavelength. The potential sources and molecular compositions of water-soluble HULIS a suburban site in Yangtze River Delta from 2017 2018 were discussed, based on results radiocarbon (14C) analysis combining Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) technique this study. 14C showed that averaged non-fossil-fuel source contributions 39 ± 8 % 36 6 summer winter, respectively, indicating significant fossil fuel HULIS. Van Krevelen diagrams obtained FT-ICR-MS proportions tannin-like carbohydrate-like groups higher summer, suggesting contribution biogenic secondary organic aerosols (SOAs). condensed aromatic structures winter suggested increasing anthropogenic emissions. Molecular composition CHO, CHON, CHOS, CHONS subgroups relatively intensities high O-containing macromolecular oligomers CHO compounds further stronger SOA formation summer. High-intensity phenolic flavonoids, which related biomass burning polycyclic hydrocarbon (PAH) derivatives combustion emissions, found compounds. Besides, two high-intensity containing ring (C9H6O7 C10H5O8) identified samples similar those off-road engine samples, traffic emissions one important study site. CHON mainly composed nitro or organonitrates with significantly associated addition enhanced NOx winter. However, formulas referring N-heterocyclic compounds, produced atmospheric processes involving reduced N species (e.g., ammonium). S-containing organosulfates (OSs) derived precursors, namely long-chain alkane hydrocarbon, illustrate mixed Generally, different policies need be considered for each season seasonal (i.e., sources, both seasons, additional coal winter). Measures control motor vehicles industrial Additional measures power plants should applied These findings add our understanding interaction between

Язык: Английский

Процитировано

13

Probing Atmospheric Aerosols by Multimodal Mass Spectrometry Techniques: Revealing Aging Characteristics of Its Individual Molecular Components DOI
Kyla Siemens, Demetrios Pagonis, Hongyu Guo

и другие.

ACS Earth and Space Chemistry, Год журнала: 2023, Номер 7(12), С. 2498 - 2510

Опубликована: Дек. 11, 2023

Detailed chemical characterization of biomass burning organic aerosol (OA) was performed using a synergistic combination multimodal mass spectrometry techniques. OA analyzed in situ high-resolution time-of-flight spectrometer (HR-ToF-AMS) and an extractive electrospray ionization (EESI-MS) deployed onboard the NASA DC-8 research aircraft. Additionally, complementary filter samples were collected for offline laboratory analysis high-performance liquid chromatography interfaced with photodiode array (HPLC-PDA-HRMS). During flight on August 3, 2019, which focused Williams Flats Fire, WA, HR-ToF-AMS data revealed abundant presence sulfur (OS) species as prominent components OA. These OS identified based their unique fragmentation. Further investigation HPLC-PDA-HRMS MSn fragmentation allowed us to identify molecular characteristics these unusual species. The dominant compounds detected during found be alkylbenzene sulfonates. Organosulfate, nitroaromatic, oxygenated aromatic also identified. Guided by HRMS results, time-resolved aging profiles selected individual retrieved from real-time EESI-MS sets evaluate evolution emission plume. Notably, sulfonate showed remarkable stability over 8 h atmospheric transport. In contrast, common organosulfates displayed short apparent half-life times that low 1.2 h, indicating susceptibility aging. nitroaromatic exhibited relatively slower aging, average 1.8 2.2 respectively.

Язык: Английский

Процитировано

12

PM2.5-bound organosulfates in two Eastern Mediterranean cities: The dominance of isoprene organosulfates DOI

Panagiotis Georgios Kanellopoulos,

Sevasti Panagiota Kotsaki, Eirini Chrysochou

и другие.

Chemosphere, Год журнала: 2022, Номер 297, С. 134103 - 134103

Опубликована: Фев. 24, 2022

Язык: Английский

Процитировано

16

Field observations of C2 and C3 organosulfates and insights into their formation mechanisms at a suburban site in Hong Kong DOI
Yuchen Wang,

Shumin Liang,

Michael Le Breton

и другие.

The Science of The Total Environment, Год журнала: 2023, Номер 904, С. 166851 - 166851

Опубликована: Сен. 8, 2023

Язык: Английский

Процитировано

9

Chemical Diversity of Organosulfur Species in Various Atmospheric Environments Over the Guanzhong Basin of Northwest China DOI Creative Commons
Xin Zhang, Lijuan Li, Yue Lin

и другие.

Journal of Geophysical Research Atmospheres, Год журнала: 2025, Номер 130(7)

Опубликована: Март 28, 2025

Abstract Atmospheric organosulfur species (OrgS) were investigated at four different sites (urban, rural, forest, and remote mountain) in the Guanzhong basin of northwest China to probe their chemical diversity distribution profiles. The organic molecular composition ambient PM 2.5 samples was measured using an ultrahigh performance liquid chromatograph coupled with electrospray ionization Orbitrap high‐resolution mass spectrometer. We found that OrgS (including CHOS CHONS herein) ubiquitously present across these environments predominated number assigned negative mode. fractions (mean 41%–45%) total over upper range compared those worldwide areas (12%–37%), primarily attributing high levels anthropogenic pollutants (SO 2 , NO x sulfate, etc.) this region. Organosulfates nitrooxy‐organosulfates aliphatic‐like structures from long‐chain alkanes biogenic precursors constituted a majority OrgS, yet distinct characteristics each environment. carbon atoms molecules revealed mainly originated complex mixed sources urban site, whereas more prevalent non‐urban sites. production resulted synergistic interactions multiple influencing factors conditions. Our results highlight importance pollution modifying aerosol under various atmospheric environments.

Язык: Английский

Процитировано

0

Unveiling a large fraction of hidden organosulfates in ambient organic aerosol DOI Creative Commons

Jialiang Ma,

Natalie Reininger,

Cunliang Zhao

и другие.

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Май 1, 2025

Organosulfates are key compounds driving the anthropogenic enhancement of ambient organic aerosol, however, total organosulfate quantification remains elusive due to their molecular diversity and scarcity authentic standards. Here, we present a solid-phase extraction method that isolates organosulfates from aerosol samples enables identification using mass spectrometry charged detector, respectively. We investigate urban China rural Germany quantify ~130 ~65 chromatographically resolved organosulfates, respectively, contributing less than ~2% matter. find significantly larger fraction appearing as broad peak in chromatograms detector. Confirming its origin non-resolved an all-ion fragmentation experiment reveals specific sulfate-related ions. Integrating this peak, contribution is 12-17% ~21% Germany, These findings emphasise potential sulfur emission reduction for mitigating both pollution.

Язык: Английский

Процитировано

0

Characterization of organic aerosols at the Natura 2000 remote environment of Sanabria Lake (Spain): Evaluating the influence of African dust and regional biomass burning smoke DOI Creative Commons
Rosa María Pérez-Pastor, Pedro Salvador, Héctor García-Gómez

и другие.

Atmospheric Environment, Год журнала: 2023, Номер 298, С. 119634 - 119634

Опубликована: Фев. 2, 2023

This work presents a thorough analysis of PM10 speciated organic composition at Sanabria Lake Natural Park, rural remote area in NW-Spain, including diacids, hydroxy and poliacids, fatty acids, alkenoic sugars, sugar alcohols, n-alkanes, PAHs, quinones, hopanes, tracers biomass burning, biogenic secondary aerosol (BSOA) from isoprene α-pinene. ambient concentrations (mean value 12.2 μg m−3) were within the typical range registered regional-background air quality monitoring stations Spain. However, occurrence African dust outbreaks burning events produced significant increases levels this site (daily mean 29.2 m−3 13.7 m−3, respectively). Major compounds levoglucosan, sacharides 2-methyltetrols, markers for soil BSOA respectively. SOA contributed more than 53% total measured organics summer Samples with high include most events, suggesting that might promote formation oxygenated species such as derivatives area. contribution decreased to 14% winter. Biomass represented 37% analysed pollutants winter, indicating is main source colder seasons, mainly due influence regional use fuel domestic heating. Hence, fact are likely become increasingly frequent context climate change makes type particularly relevant assessing their impact on natural protected areas.

Язык: Английский

Процитировано

5

Molecular-scale investigation on the composition, sources and secondary generation of organic aerosols in polluted central China DOI
Zhe Dong, Xiao Li, Fangcheng Su

и другие.

Journal of Cleaner Production, Год журнала: 2023, Номер 434, С. 139830 - 139830

Опубликована: Ноя. 23, 2023

Язык: Английский

Процитировано

5

Molecular Characterization of Atmospheric Organic Aerosols: Contemporary Applications of High-resolution Mass Spectrometry DOI
Qiaorong Xie, Alexander Laskin

TrAC Trends in Analytical Chemistry, Год журнала: 2024, Номер 181, С. 117986 - 117986

Опубликована: Сен. 25, 2024

Язык: Английский

Процитировано

1

Distribution characteristics of organosulfates (OSs) in PM2.5 in Tianjin, Northern China: Quantitative analysis of total and three OS species DOI
Shiyuan Ding, Yingying Chen, Subba Rao Devineni

и другие.

The Science of The Total Environment, Год журнала: 2022, Номер 834, С. 155314 - 155314

Опубликована: Апрель 18, 2022

Язык: Английский

Процитировано

6