Development of an instrument for the dynamic generation of test gases

Weber, H.; Stenner, H.; Kettrup, A.

doi:10.1007/bf00983404

Cited by 6 publications

(1 citation statement)

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“…The apparatus was laboratory-made. Regarding details about the operation principle of the test gas generators see earlier publications [11,[16][17][18][19]. For this study, the flows of the four gas generators were combined and mixed-up with the humidified gas stream.…”

Section: Resultsmentioning

confidence: 99%

Determination of aromatic hydrocarbons in air using diffusion denuders

Risse

Flammenkamp

Kettrup

1996

Fresenius J Anal Chem

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The results of a study to evaluate a recently developed denuder sampling system for the determination of aromatic hydrocarbons in air are presented. Denuders of different lengths were tested in laboratory experiments by means of dynamically generated test gases at conditions similar to those at workplaces. Uptake rates, adsorption capacities as well as desorption efficiencies were measured at different sampling parameters. The influence of air humidity on the adsorption behaviour was determined. Finally, the suitability of the system for outdoor air investigations was checked. The denuders were very suitable for the determination of aromatic hydrocarbons in workplace air; the general feasibility to investigate outdoor air samples was demonstrated.

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Section: Resultsmentioning

confidence: 99%