Separation of volatile and non-volatile aerosol fractions by thermodesorption. instrumental development and applications

Type
01A - Journal article
Editors
Editor (Corporation)
Supervisor
Parent work
Journal of Aerosol Science
Special issue
DOI of the original publication
Link
Series
Series number
Volume
32
Issue / Number
4
Pages / Duration
427-442
Patent number
Publisher / Publishing institution
Elsevier
Place of publication / Event location
Amsterdam
Edition
Version
Programming language
Assignee
Practice partner / Client
Abstract
An instrument to remove volatile material from aerosol particles by thermal desorption is presented. The thermodesorber consists of a heated tube, where volatile material is desorbed from the particles, and a water- or air-cooled tube, consisting of activated charcoal. This last tube removes desorbed material and thus prevents it from re-adsorbing onto particles. Although designed for measuring particulate emissions from combustion processes it can also be applied to atmospheric aerosols. After theoretical and experimental determination of thermodesorber operating characteristics (temperature profile, losses, removal of desorbed material), examples of applications in several fields are given. Examples of atmospheric measurements at several remote and urban sites are presented. In combustion technology, the thermodesorber is applied to remove all volatile materials, allowing separation of volatile species and the non-volatile core (mainly elemental carbon) of combustion particles. Finally, the thermodesorber is used to study adsorption and desorption processes of polycyclic aromatic hydrocarbons on particles.
Keywords
Subject (DDC)
550 - Geowissenschaften
620 - Ingenieurwissenschaften und Maschinenbau
Project
Event
Exhibition start date
Exhibition end date
Conference start date
Conference end date
Date of the last check
ISBN
ISSN
0021-8502
Language
English
Created during FHNW affiliation
No
Strategic action fields FHNW
Publication status
Published
Review
Peer review of the complete publication
Open access category
Closed
License
Citation
BURTSCHER, Heinz, Urs BALTENSPERGER, Nicolas BUKOWIECKI, P. COHN, Christoph HÜGLIN, Martin MOHR, Urs MATTER, Stephan NYEKI, Volker SCHMATLOCH, Niklaus STREIT und Ernest WEINGARTNER, 2001. Separation of volatile and non-volatile aerosol fractions by thermodesorption. instrumental development and applications. Journal of Aerosol Science. April 2001. Bd. 32, Nr. 4, S. 427–442. DOI 10.1016/s0021-8502(00)00089-6. Verfügbar unter: https://irf.fhnw.ch/handle/11654/46845