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Quantitative detection of aerial suspension of particles with a full-frame visual camera for atmospheric wind tunnel studies

Title data

Esders, Eike ; Georgi, Christoph ; Babel, Wolfgang ; Thomas, Christoph:
Quantitative detection of aerial suspension of particles with a full-frame visual camera for atmospheric wind tunnel studies.
In: Aerosol Science and Technology. (16 March 2022) . - pp. 1-15.
ISSN 0278-6826
DOI: https://doi.org/10.1080/02786826.2022.2048789

Project information

Project title:
Project's official titleProject's id
SFB 1357 Mikroplastik391977956

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Aerial suspension is an important process to link potential sources of particles to atmospheric transport. For contaminants like radioactive particles, pesticides or spores aerial suspension is especially relevant. We present a method that can visually quantify the suspension potential of particles in an idealized surface atmosphere system. The suspension potential of an airflow was assessed by quantifying fluorescent microplastic particles on a glass plate and exposing them to an incrementally increasing erosive wind force. In this first application of the method, we demonstrate its utility across a range of microplastic particles with regard to shape, size and polymer composition, and to detect two distinct regimes with different suspension rates. It can yield statistically robust estimates for the suspension potential of suspended fractions of up to 2500 particles at a mean areal number density of 2.6 particles per mm2. The mean wind speed at 2.7 cm height reached up to 5.2 ms−1 with a corresponding friction velocity of 0.51 ms−1.Copyright © 2021 American Association for Aerosol Research

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professor Micrometeorology > Professor Micrometeorology - Univ.-Prof. Dr. Christoph K. Thomas
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Research Institutions > Collaborative Research Centers, Research Unit > SFB 1357 - MIKROPLASTIK
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 550 Earth sciences, geology
Date Deposited: 23 Mar 2022 12:58
Last Modified: 23 Mar 2022 12:58
URI: https://eref.uni-bayreuth.de/id/eprint/68994