A Novel System for Source Characterization and Controlled Human Exposure to Nanoparticle Aggregates Generated During Gas–Metal Arc Welding
(2013) In Aerosol Science and Technology 47(1). p.52-59- Abstract
- Abstract in Undetermined
The aim of this study was to achieve a method to perform detailed characterization and human exposure studies of nanosized and nanostructured aerosol particles. The source chosen was mild steel, active gas, arc welding fume. The setup consisted of a generation chamber, where welding can be performed, connected to an airtight stainless steel 22 m(3) exposure chamber. Instrumentation, consisting of a tapered element oscillating microbalance, a scanning mobility particle sizer, and a sampler for electron microscopy and particle-induced X-ray emission analysis was connected to the stainless steel chamber. The feasibility of the system for human exposure studies was evaluated by exposing 31 human volunteers, in... (More) - Abstract in Undetermined
The aim of this study was to achieve a method to perform detailed characterization and human exposure studies of nanosized and nanostructured aerosol particles. The source chosen was mild steel, active gas, arc welding fume. The setup consisted of a generation chamber, where welding can be performed, connected to an airtight stainless steel 22 m(3) exposure chamber. Instrumentation, consisting of a tapered element oscillating microbalance, a scanning mobility particle sizer, and a sampler for electron microscopy and particle-induced X-ray emission analysis was connected to the stainless steel chamber. The feasibility of the system for human exposure studies was evaluated by exposing 31 human volunteers, in groups of three, to a test aerosol containing 1 mg/m(3) welding fumes and to conditioned, filtered air. The results show that an aerosol that accurately represents dilute welding fume exposures that occur in workplaces can be produced in a controlled manner, and that the experimental setup can be used for 6 h, double-blind, exposures of human subjects. Particle mass concentration levels could be varied from <5 mu g/m(3) to more than 1000 mu g/m(3). Fumes from metal active gas welding showed a unimodal size distribution with a mean mobility diameter of 160 nm, transmission electron microscopy showed aggregates with a clearly nanosized structure. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1973392
- author
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Aerosol Science and Technology
- volume
- 47
- issue
- 1
- pages
- 52 - 59
- publisher
- Taylor & Francis
- external identifiers
-
- wos:000309965000007
- scopus:84867164104
- ISSN
- 1521-7388
- DOI
- 10.1080/02786826.2012.724733
- language
- English
- LU publication?
- yes
- id
- 4d929004-d00e-48c2-83ab-746b97adacea (old id 1973392)
- date added to LUP
- 2016-04-01 11:04:13
- date last changed
- 2023-11-10 11:44:49
@article{4d929004-d00e-48c2-83ab-746b97adacea, abstract = {{Abstract in Undetermined<br> The aim of this study was to achieve a method to perform detailed characterization and human exposure studies of nanosized and nanostructured aerosol particles. The source chosen was mild steel, active gas, arc welding fume. The setup consisted of a generation chamber, where welding can be performed, connected to an airtight stainless steel 22 m(3) exposure chamber. Instrumentation, consisting of a tapered element oscillating microbalance, a scanning mobility particle sizer, and a sampler for electron microscopy and particle-induced X-ray emission analysis was connected to the stainless steel chamber. The feasibility of the system for human exposure studies was evaluated by exposing 31 human volunteers, in groups of three, to a test aerosol containing 1 mg/m(3) welding fumes and to conditioned, filtered air. The results show that an aerosol that accurately represents dilute welding fume exposures that occur in workplaces can be produced in a controlled manner, and that the experimental setup can be used for 6 h, double-blind, exposures of human subjects. Particle mass concentration levels could be varied from <5 mu g/m(3) to more than 1000 mu g/m(3). Fumes from metal active gas welding showed a unimodal size distribution with a mean mobility diameter of 160 nm, transmission electron microscopy showed aggregates with a clearly nanosized structure.}}, author = {{Isaxon, Christina and Dierschke, Katrin and Pagels, Joakim and Löndahl, Jakob and Gudmundsson, Anders and Hagerman, Inger and Berglund, Margareta and Wierzbicka, Aneta and Assarsson, Eva and Andersson, Ulla B and Jönsson, Bo A and Nielsen, Jörn and Bohgard, Mats}}, issn = {{1521-7388}}, language = {{eng}}, number = {{1}}, pages = {{52--59}}, publisher = {{Taylor & Francis}}, series = {{Aerosol Science and Technology}}, title = {{A Novel System for Source Characterization and Controlled Human Exposure to Nanoparticle Aggregates Generated During Gas–Metal Arc Welding}}, url = {{http://dx.doi.org/10.1080/02786826.2012.724733}}, doi = {{10.1080/02786826.2012.724733}}, volume = {{47}}, year = {{2013}}, }