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Exposure and Emission Measurements During Production, Purification, and Functionalization of Arc-Discharge-Produced Multi-walled Carbon Nanotubes.

Hedmer, Maria LU ; Isaxon, Christina LU ; Nilsson, Patrik LU ; Ludvigsson, Linus LU ; Messing, Maria LU ; Genberg, Johan LU ; Skaug, Vidar; Bohgard, Mats LU ; Tinnerberg, Håkan LU and Pagels, Joakim LU (2014) In Annals of Occupational Hygiene 58(3). p.355-379
Abstract
Background: The production and use of carbon nanotubes (CNTs) is rapidly growing. With increased production, there is potential that the number of occupational exposed workers will rapidly increase. Toxicological studies on rats have shown effects in the lungs, e.g. inflammation, granuloma formation, and fibrosis after repeated inhalation exposure to some forms of multi-walled CNTs (MWCNTs). Still, when it comes to health effects, it is unknown which dose metric is most relevant. Limited exposure data for CNTs exist today and no legally enforced occupational exposure limits are yet established. The aim of this work was to quantify the occupational exposures and emissions during arc discharge production, purification, and functionalization... (More)
Background: The production and use of carbon nanotubes (CNTs) is rapidly growing. With increased production, there is potential that the number of occupational exposed workers will rapidly increase. Toxicological studies on rats have shown effects in the lungs, e.g. inflammation, granuloma formation, and fibrosis after repeated inhalation exposure to some forms of multi-walled CNTs (MWCNTs). Still, when it comes to health effects, it is unknown which dose metric is most relevant. Limited exposure data for CNTs exist today and no legally enforced occupational exposure limits are yet established. The aim of this work was to quantify the occupational exposures and emissions during arc discharge production, purification, and functionalization of MWCNTs. The CNT material handled typically had a mean length <5 μm. Since most of the collected airborne CNTs did not fulfil the World Health Organization fibre dimensions (79% of the counted CNT-containing particles) and since no microscopy-based method for counting of CNTs exists, we decided to count all particle that contained CNTs. To investigate correlations between the used exposure metrics, Pearson correlation coefficient was used. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
in
Annals of Occupational Hygiene
volume
58
issue
3
pages
355 - 379
publisher
Oxford University Press
external identifiers
  • pmid:24389082
  • wos:000333046700008
  • scopus:84896367811
ISSN
1475-3162
DOI
10.1093/annhyg/met072
language
English
LU publication?
yes
id
44f68f72-9399-421b-84dc-14cb9f2fb42f (old id 4292026)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/24389082?dopt=Abstract
date added to LUP
2014-02-06 21:08:00
date last changed
2017-11-05 03:14:03
@article{44f68f72-9399-421b-84dc-14cb9f2fb42f,
  abstract     = {Background: The production and use of carbon nanotubes (CNTs) is rapidly growing. With increased production, there is potential that the number of occupational exposed workers will rapidly increase. Toxicological studies on rats have shown effects in the lungs, e.g. inflammation, granuloma formation, and fibrosis after repeated inhalation exposure to some forms of multi-walled CNTs (MWCNTs). Still, when it comes to health effects, it is unknown which dose metric is most relevant. Limited exposure data for CNTs exist today and no legally enforced occupational exposure limits are yet established. The aim of this work was to quantify the occupational exposures and emissions during arc discharge production, purification, and functionalization of MWCNTs. The CNT material handled typically had a mean length &lt;5 μm. Since most of the collected airborne CNTs did not fulfil the World Health Organization fibre dimensions (79% of the counted CNT-containing particles) and since no microscopy-based method for counting of CNTs exists, we decided to count all particle that contained CNTs. To investigate correlations between the used exposure metrics, Pearson correlation coefficient was used.},
  author       = {Hedmer, Maria and Isaxon, Christina and Nilsson, Patrik and Ludvigsson, Linus and Messing, Maria and Genberg, Johan and Skaug, Vidar and Bohgard, Mats and Tinnerberg, Håkan and Pagels, Joakim},
  issn         = {1475-3162},
  language     = {eng},
  number       = {3},
  pages        = {355--379},
  publisher    = {Oxford University Press},
  series       = {Annals of Occupational Hygiene},
  title        = {Exposure and Emission Measurements During Production, Purification, and Functionalization of Arc-Discharge-Produced Multi-walled Carbon Nanotubes.},
  url          = {http://dx.doi.org/10.1093/annhyg/met072},
  volume       = {58},
  year         = {2014},
}