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Multiple headspace extraction gas chromatography for quantification

Hjellström, Kristina LU ; Wadsö, Lars LU and Kristenson, J (2002) 9th International Conference on Indoor Air Quality and Climate - Indoor Air 2002, In Indoor Air 2002- 9th International Conference on Indoor Air Quality and Climate p.914-919
Abstract
Concrete itself is not a source of VOC emissions of any importance. However, humid concrete is very alkaline and may cause degradation of organic materials. Concrete can also adsorb considerable amounts of volatile compounds, e.g. from degrading flooring materials. This together with the present trends in cement and concrete production (alternative fuels, new organic additives, waste materials) has made it interesting to develop rapid methods for quantification of VOCs in concrete. We have tested a multiple headspace extraction gas chromatography method to determine the VOC content of cement bound materials. The total VOC content of a sample may be calculated from repeated headspace injections. The sample incubation time and temperature... (More)
Concrete itself is not a source of VOC emissions of any importance. However, humid concrete is very alkaline and may cause degradation of organic materials. Concrete can also adsorb considerable amounts of volatile compounds, e.g. from degrading flooring materials. This together with the present trends in cement and concrete production (alternative fuels, new organic additives, waste materials) has made it interesting to develop rapid methods for quantification of VOCs in concrete. We have tested a multiple headspace extraction gas chromatography method to determine the VOC content of cement bound materials. The total VOC content of a sample may be calculated from repeated headspace injections. The sample incubation time and temperature were optimized for six organic compounds with different boiling points and polarity. The method is tested on samples with known additions of these six organic compounds. The method works well on relatively dry samples, but there are problems with over-pressure in the headspace vial from water vapor in humid samples. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
concrete, gas chromatography, voc, headspace, water vapor
in
Indoor Air 2002- 9th International Conference on Indoor Air Quality and Climate
editor
Levin, Hal
pages
914 - 919
conference name
9th International Conference on Indoor Air Quality and Climate - Indoor Air 2002,
ISBN
0-9721832-0-5
language
English
LU publication?
yes
id
99696674-6135-4141-9630-1d1e1cd3b9ee (old id 3947259)
alternative location
http://www.irbnet.de/daten/iconda/CIB6907.pdf
date added to LUP
2013-07-17 19:20:59
date last changed
2016-04-16 12:24:43
@inproceedings{99696674-6135-4141-9630-1d1e1cd3b9ee,
  abstract     = {Concrete itself is not a source of VOC emissions of any importance. However, humid concrete is very alkaline and may cause degradation of organic materials. Concrete can also adsorb considerable amounts of volatile compounds, e.g. from degrading flooring materials. This together with the present trends in cement and concrete production (alternative fuels, new organic additives, waste materials) has made it interesting to develop rapid methods for quantification of VOCs in concrete. We have tested a multiple headspace extraction gas chromatography method to determine the VOC content of cement bound materials. The total VOC content of a sample may be calculated from repeated headspace injections. The sample incubation time and temperature were optimized for six organic compounds with different boiling points and polarity. The method is tested on samples with known additions of these six organic compounds. The method works well on relatively dry samples, but there are problems with over-pressure in the headspace vial from water vapor in humid samples.},
  author       = {Hjellström, Kristina and Wadsö, Lars and Kristenson, J},
  booktitle    = {Indoor Air 2002- 9th International Conference on Indoor Air Quality and Climate},
  editor       = {Levin, Hal},
  isbn         = {0-9721832-0-5},
  keyword      = {concrete,gas chromatography,voc,headspace,water vapor},
  language     = {eng},
  pages        = {914--919},
  title        = {Multiple headspace extraction gas chromatography for quantification},
  year         = {2002},
}