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Sulfur dioxide measurements using an ultraviolet light-emitting diode in combination with gas correlation techniques

Lou, X. T.; Somesfalean, Gabriel LU ; Zhang, Z. G. and Svanberg, Sune LU (2009) In Applied Physics B 94(4). p.699-704
Abstract
The important air pollutant sulfur dioxide has a strong structured absorption band in the ultraviolet (UV) region around 300 nm. Recently, light-emitting diodes (LEDs) with structureless emission in a band about 15-nm wide in the UV region have become available. We demonstrate that they can be ideal sources for gas absorption measurements combined with the gas correlation technique, where an absorption cell with an optically thick column of the gas under investigation is used for analysing the target gas contents in a path between the LED and the measurement device. A sensitivity of 0.4 ppm sulfur dioxide was obtained with a 19-cm optical path length and 60-s integration time. Particularly compact and cost-effective monitors especially for... (More)
The important air pollutant sulfur dioxide has a strong structured absorption band in the ultraviolet (UV) region around 300 nm. Recently, light-emitting diodes (LEDs) with structureless emission in a band about 15-nm wide in the UV region have become available. We demonstrate that they can be ideal sources for gas absorption measurements combined with the gas correlation technique, where an absorption cell with an optically thick column of the gas under investigation is used for analysing the target gas contents in a path between the LED and the measurement device. A sensitivity of 0.4 ppm sulfur dioxide was obtained with a 19-cm optical path length and 60-s integration time. Particularly compact and cost-effective monitors especially for industrial emissions can be envisaged. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics B
volume
94
issue
4
pages
699 - 704
publisher
Springer
external identifiers
  • wos:000263976500020
  • scopus:62349124418
ISSN
0946-2171
DOI
10.1007/s00340-009-3399-x
language
English
LU publication?
yes
id
bcb94ced-d578-4b02-bf5a-534a228a46e5 (old id 1405038)
date added to LUP
2009-06-10 15:34:34
date last changed
2017-09-24 03:38:37
@article{bcb94ced-d578-4b02-bf5a-534a228a46e5,
  abstract     = {The important air pollutant sulfur dioxide has a strong structured absorption band in the ultraviolet (UV) region around 300 nm. Recently, light-emitting diodes (LEDs) with structureless emission in a band about 15-nm wide in the UV region have become available. We demonstrate that they can be ideal sources for gas absorption measurements combined with the gas correlation technique, where an absorption cell with an optically thick column of the gas under investigation is used for analysing the target gas contents in a path between the LED and the measurement device. A sensitivity of 0.4 ppm sulfur dioxide was obtained with a 19-cm optical path length and 60-s integration time. Particularly compact and cost-effective monitors especially for industrial emissions can be envisaged.},
  author       = {Lou, X. T. and Somesfalean, Gabriel and Zhang, Z. G. and Svanberg, Sune},
  issn         = {0946-2171},
  language     = {eng},
  number       = {4},
  pages        = {699--704},
  publisher    = {Springer},
  series       = {Applied Physics B},
  title        = {Sulfur dioxide measurements using an ultraviolet light-emitting diode in combination with gas correlation techniques},
  url          = {http://dx.doi.org/10.1007/s00340-009-3399-x},
  volume       = {94},
  year         = {2009},
}