Characteristics of Scanning Flow Condensation Particle Counter (SFCPC): A rapid approach for retrieving hygroscopicity and chemical composition of sub-10 nm aerosol particles DOI
Kewei Zhang,

Zhengning Xu,

Xiangyu Pei

et al.

Aerosol Science and Technology, Journal Year: 2023, Volume and Issue: 57(10), P. 1031 - 1043

Published: Aug. 10, 2023

AbstractChemical composition of sub-10 nm particles is crucial for understanding the atmospheric new particle formation (NPF) and subsequent growth. However, very limited chemical information available in this diameter range due to high technical requirements. In work, we proposed a operation mode water-based condensation counter, which was termed as Scanning Flow Condensation Particle Counter (SFCPC). By altering aerosol flow rate (Qa), method could change supersaturation (S) rapidly. The inner S SFCPC evaluated by ammonium sulfate (AS) tungsten oxide particles. It decreased more sharp when Qa varied from 400 80 cm3 min−1, corresponding 14.02%–26.39%, activate AS 3.6–5.4 nm. Hygroscopicity parameter κ obtained directly selected measured counting efficiency. For AS-levoglucosan/sucrose mixtures, linear relationship between organic mass fraction forg successfully established down 3.5 We also several NPF relevant organics 5–8 (0.121 ± 0.055, 0.123 0.035, 0.132 0.032, 0.129 0.023 0.142 cis-pinonic acid, benzoic malonic succinic glutaric respectively). This has been lab capability measuring κ. size-resolved indicated that be used infer forg. rapid activated make suitable field measurements. provided an important complement formation.Copyright © 2023 American Association Aerosol Research Disclosure statementNo potential conflict interest reported authors.Additional informationFundingThis work supported National Natural Science Foundation China (41805100, 91844301, 42005086), Fundamental Funds Central Universities (2018QNA6008), Key Development Program Zhejiang Province (2021C03165 2022C03084).

Language: Английский

Advances in analysis of atmospheric ultrafine particles and application in air quality, climate, and health research DOI
Ting Lei, Xiang Wang, Bin Zhao

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 949, P. 175045 - 175045

Published: July 26, 2024

Language: Английский

Citations

3
Quantitative description of surface tension for nanodroplets containing ammonium sulfate and its application to the particle hygroscopicity prediction DOI
Chao Zhang, Hsin-Hung Lin, Zhichao Zhang

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(1)

Published: Jan. 1, 2025

Surface tension is critically important in the hygroscopicity prediction of nano-aerosols, but experimental measurements suspended nanodroplet surface are currently unattainable. In this study, effect size and solute concentration on aqueous ammonium sulfate (AS) droplet smaller than 10 nm investigated based molecular dynamics simulations. A formula proposed applied theoretical model for particle hygroscopicity, compared with models using traditional methods description. Results show that increase AS concentration, decreases first then increases, correlation between changes from positive to negative. Compared considering only effect, including both corrections enables obtain a hygroscopic growth factor, which closer results. The improvement new accuracy increases decreasing size. Additionally, leads an critical supersaturation particles 5 decrease larger particles. present study highlights importance investigation nanodroplets comprising complex ingredients.

Language: Английский

Citations

0
How the understanding of atmospheric new particle formation has evolved along with the development of measurement and analysis methods DOI Creative Commons
Katrianne Lehtipalo, Tiina M. Nieminen,

S Schobesberger

et al.

Journal of Aerosol Science, Journal Year: 2024, Volume and Issue: unknown, P. 106494 - 106494

Published: Nov. 1, 2024

Language: Английский

Citations

1
Characterization of the planar differential mobility analyzer (DMA P5): resolving power, transmission efficiency and its application to atmospheric relevant cluster measurements DOI Creative Commons

Zhengning Xu,

Jian Gao,

Zhuanghao Xu

et al.

Atmospheric measurement techniques, Journal Year: 2023, Volume and Issue: 16(24), P. 5995 - 6006

Published: Dec. 15, 2023

Abstract. The planar differential mobility analyzer (DMA), functioning as a particle sizer, exhibits superior transmission and selection accuracy at ambient pressure relative to its cylindrical counterparts. It also presents integration potential with atmospheric interface mass spectrometry (API-MS) for enhanced cluster detection an additional ion dimension. In this study, the performance of commercially available DMA (DMA P5) was evaluated. device is capable sizing particles below 3.9 nm, larger sizes measurable through sheath gas flow restrictor. resolving power appraised under various recirculation arrangements, including suction counterflow modes along different rates, using electrosprayed tetra-alkyl ammonium salts. peak powers tetrahexylammonium (THA+) achieved in were 61.6 84.6, respectively. P5 offers resolution that 5 16 times greater than DMAs. Resolving displayed near-linear relationship square root applied voltage (VDMA) mode. Conversely, THA+ ceased linear enhancement VDMA beyond 3554.3 V, entering plateau which ascribed perturbations sample impacting laminar nature flow. efficiency reaches 54.3 %, markedly surpassing conventional DMAs by nearly 1 order magnitude. Moreover, spectrum salts mass-to-charge versus 2D sulfuric acid clusters characterized MS system.

Language: Английский

Citations

1
Characteristics of Scanning Flow Condensation Particle Counter (SFCPC): A rapid approach for retrieving hygroscopicity and chemical composition of sub-10 nm aerosol particles DOI
Kewei Zhang,

Zhengning Xu,

Xiangyu Pei

et al.

Aerosol Science and Technology, Journal Year: 2023, Volume and Issue: 57(10), P. 1031 - 1043

Published: Aug. 10, 2023

AbstractChemical composition of sub-10 nm particles is crucial for understanding the atmospheric new particle formation (NPF) and subsequent growth. However, very limited chemical information available in this diameter range due to high technical requirements. In work, we proposed a operation mode water-based condensation counter, which was termed as Scanning Flow Condensation Particle Counter (SFCPC). By altering aerosol flow rate (Qa), method could change supersaturation (S) rapidly. The inner S SFCPC evaluated by ammonium sulfate (AS) tungsten oxide particles. It decreased more sharp when Qa varied from 400 80 cm3 min−1, corresponding 14.02%–26.39%, activate AS 3.6–5.4 nm. Hygroscopicity parameter κ obtained directly selected measured counting efficiency. For AS-levoglucosan/sucrose mixtures, linear relationship between organic mass fraction forg successfully established down 3.5 We also several NPF relevant organics 5–8 (0.121 ± 0.055, 0.123 0.035, 0.132 0.032, 0.129 0.023 0.142 cis-pinonic acid, benzoic malonic succinic glutaric respectively). This has been lab capability measuring κ. size-resolved indicated that be used infer forg. rapid activated make suitable field measurements. provided an important complement formation.Copyright © 2023 American Association Aerosol Research Disclosure statementNo potential conflict interest reported authors.Additional informationFundingThis work supported National Natural Science Foundation China (41805100, 91844301, 42005086), Fundamental Funds Central Universities (2018QNA6008), Key Development Program Zhejiang Province (2021C03165 2022C03084).

Language: Английский

Citations

0