Soot particle mobility-mass relationship measurement
SND-ID: snd1057-1. Version: 1.0. DOI: https://doi.org/10.5878/mc9m-j176
Citation
Creator/Principal investigator(s)
Ravi Kant Pathak
- University of Gothenburg
Research principal
Description
The morphological transformation of soot particles via condensation of low-volatility materials constitutes a dominant atmospheric process with serious implications for the optical and hygroscopic properties, and atmospheric lifetime of the soot. We consider the morphological transformation of soot aggregates under the influence of condensation of vapors of sulfuric acid, and/or limonene ozonolysis products. This influence was systematically investigated using a Differential Mobility Analyzer-Aerosol Particle Mass Analyzer (DMA-APM) and the Tandem DMA techniques integrated with a laminar flow-tube system. We hypothesize that the morphology transformation of soot results (in general) from a two-step process, i.e., (i) filling of void space within the aggregate; (ii) growth of the particle diameter. Initially, the transformation was dominated by the filling process followed by growth, which led to the accumulation of sufficient material that exerted surface forces, which eventually facilitating further filling. The filling of void space was constrained by the initial morphology of the fresh soot
... Show more..Purpose:
Study of morphological transformation of soot particles
Data is collected by instrument Differential Mobility Analyzer-Aerosol Particle Mass Analyzer (DMA-APM), program based on LabVIEW is used to control the instrument and log the data. Show less..
Data contains personal data
No
Language
Data format / data structure
Geographic spread
Geographic location: Sweden
Research area
Environmental sciences (Standard för svensk indelning av forskningsämnen 2011)
Natural sciences (Standard för svensk indelning av forskningsämnen 2011)
Keywords
Wu, C., Wu, D., and Yu, J. Z.: Quantifying black carbon light absorption enhancement with a novel statistical approach, Atmos. Chem. Phys., 18, 289–309, https://doi.org/10.5194/acp-18-289-2018, 2018.
DOI:
https://doi.org/10.5194/acp-18-289-2018
Kanngiesser, F., & Kahnert, M. (2018). Calculation of optical properties of light-absorbing carbon with weakly absorbing coating: A model with tunable transition from film-coating to spherical-shell coating. In Journal of Quantitative Spectroscopy and Radiative Transfer (Vol. 216, pp. 17–36). https://doi.org/10.1016/j.jqsrt.2018.05.014
DOI:
https://doi.org/10.1016/j.jqsrt.2018.05.014
SwePub:
oai:research.chalmers.se:22212523-2d7f-4518-b46d-5e88f10ffa9b