Surrogate atmospheric dust particles generated from dune soils in laboratory: Comparison with field measurement--颗粒学报PARTICUOLOGY

Wu, F., Song, N., Hu, T., Ho, S. S. H., Cao, J., & Zhang, D. (2023). Surrogate atmospheric dust particles generated from dune soils in laboratory: Comparison with field measurement. Particuology, 72, 29-36. https://doi.org/10.1016/j.partic.2022.02.007

Surrogate atmospheric dust particles generated from dune soils in laboratory: Comparison with field measurement

Feng Wu ^{a b c *}, Na Song ^b, Tafeng Hu^{a b c}, Steven Sai Hang Ho ^f, Junji Cao ^d, Daizhou Zhang ^e

a State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China
b Key Laboratory of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China
c CAS Center for Excellence in Quaternary Science and Global Change, Xi’an, 710061, China
d Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China
e Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, Kumamoto 862-8502, Japan
f Division of Atmospheric Sciences, Desert Research Institute, Reno, NV 89512, United States

10.1016/j.partic.2022.02.007

Volume 72, January 2023, Pages 29-36

Received 5 January 2022, Revised 23 February 2022, Accepted 24 February 2022, Available online 21 March 2022, Version of Record 21 March 2022.

E-mail: kurt_wf@ieecas.cn

Highlights

• A laboratory dust simulation system was set up with simulated natural wind erosion processes.

• Aerosol dust was generated from surface sand samples and collected using the dust simulation system.

• The laboratory-generated dust was an ideal surrogate for soil-emitted dust in the desert areas.

Abstract

Desert dust strongly influences the climate and the environment by altering the radiation budget, participating in atmospheric chemical reactions, and engaging the biogeochemical cycle. Studying its impacts requires knowledge of the physical and chemical properties of the original particles from the source origin. Unfortunately, the field collection of atmospheric samples in the desert is impractical. Fine surface soil is thus considered an alternative material from which to obtain the information applicable to dust particles from the desert soil. In this study, a laboratory system was set up to generate dust particles with simulated natural wind erosion processes from surface soils or directly from desert surfaces. Surface soils and field dust were simultaneously collected during a local blowing dust event. The comparison between the laboratory-generated dust and the field dust showed a consistent trend in particle size distribution and chemical composition. The chemical compositions were found to have explainable differences with the Certified Reference Materials for Asian dust (CJ-2). The laboratory-generated dust particles with the system could be applied as surrogates for soil-emitted dust in desert areas.

Graphical abstract

Keywords

Laboratory dust simulation system; Asian dust; Source profiles; Particle sizes; Chemical compositions

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