A chemosorptive cylindrical denuder designed for personal exposure measurements of isocyanates-evaluation on generated aerosols of 4,4 '-methylenediphenyl diisocyanate
(2005) In Journal of Environmental Monitoring 7(5). p.469-474- Abstract
- A denuder/filter system constructed for solvent-free personal exposure measurements was evaluated for separation of vapour and particulate 4,4'-methylenediphenyl diisocyanate (4,4'-MDI) generated from heated PUR-foam. The two different phases were collected in the denuder and on the filter, respectively, by chemosorption on a polydimethylsiloxane (SE-30)-dibutylamine (DBA) stationary phase. Both repeatability and the total mass concentration of 4,4'-MDI were similar to that obtained from the reference method, in this case an impinger/filter system. The penetration of particles through the denuder at 300 ml min(-1) was nearly 100% in the particle size range 25 to 700 nm, which fits well with the Gormley-Kennedy equation. Denuder/filter... (More)
- A denuder/filter system constructed for solvent-free personal exposure measurements was evaluated for separation of vapour and particulate 4,4'-methylenediphenyl diisocyanate (4,4'-MDI) generated from heated PUR-foam. The two different phases were collected in the denuder and on the filter, respectively, by chemosorption on a polydimethylsiloxane (SE-30)-dibutylamine (DBA) stationary phase. Both repeatability and the total mass concentration of 4,4'-MDI were similar to that obtained from the reference method, in this case an impinger/filter system. The penetration of particles through the denuder at 300 ml min(-1) was nearly 100% in the particle size range 25 to 700 nm, which fits well with the Gormley-Kennedy equation. Denuder/filter sampling of the 4,4'-MDI aerosol at 500 ml min(-1) yielded a phase distribution that was in accordance with the results from the reference method. The method limit of detection was 6 ng m(-3) and 4 ng m(-3) for the denuder and filter, respectively, when using an air sampling flow rate of 300 ml min(-1) and a sampling period of 15 min. This is well below the Swedish occupational exposure limit (OEL) of 50 and 100 μ g m(-3) for an 8-hour working day and a 5-min period, respectively. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/240513
- author
- Nordqvist, Y ; Nilsson, U ; Colmsjo, A ; Dahl, Andreas LU and Gudmundsson, Anders LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Environmental Monitoring
- volume
- 7
- issue
- 5
- pages
- 469 - 474
- publisher
- Royal Society of Chemistry
- external identifiers
-
- wos:000228932400012
- pmid:15877168
- scopus:19544388946
- pmid:15877168
- ISSN
- 1464-0325
- DOI
- 10.1039/b414047h
- language
- English
- LU publication?
- yes
- id
- 5f9a8421-c650-4d46-8c28-258883fdc664 (old id 240513)
- date added to LUP
- 2016-04-01 12:18:16
- date last changed
- 2022-03-28 23:02:30
@article{5f9a8421-c650-4d46-8c28-258883fdc664,
abstract = {{A denuder/filter system constructed for solvent-free personal exposure measurements was evaluated for separation of vapour and particulate 4,4'-methylenediphenyl diisocyanate (4,4'-MDI) generated from heated PUR-foam. The two different phases were collected in the denuder and on the filter, respectively, by chemosorption on a polydimethylsiloxane (SE-30)-dibutylamine (DBA) stationary phase. Both repeatability and the total mass concentration of 4,4'-MDI were similar to that obtained from the reference method, in this case an impinger/filter system. The penetration of particles through the denuder at 300 ml min(-1) was nearly 100% in the particle size range 25 to 700 nm, which fits well with the Gormley-Kennedy equation. Denuder/filter sampling of the 4,4'-MDI aerosol at 500 ml min(-1) yielded a phase distribution that was in accordance with the results from the reference method. The method limit of detection was 6 ng m(-3) and 4 ng m(-3) for the denuder and filter, respectively, when using an air sampling flow rate of 300 ml min(-1) and a sampling period of 15 min. This is well below the Swedish occupational exposure limit (OEL) of 50 and 100 μ g m(-3) for an 8-hour working day and a 5-min period, respectively.}},
author = {{Nordqvist, Y and Nilsson, U and Colmsjo, A and Dahl, Andreas and Gudmundsson, Anders}},
issn = {{1464-0325}},
language = {{eng}},
number = {{5}},
pages = {{469--474}},
publisher = {{Royal Society of Chemistry}},
series = {{Journal of Environmental Monitoring}},
title = {{A chemosorptive cylindrical denuder designed for personal exposure measurements of isocyanates-evaluation on generated aerosols of 4,4 '-methylenediphenyl diisocyanate}},
url = {{http://dx.doi.org/10.1039/b414047h}},
doi = {{10.1039/b414047h}},
volume = {{7}},
year = {{2005}},
}