Environmental Test Chambers and Cells

Salthammer, Tunga

doi:10.1002/9783527628889.ch5

Cited by 17 publications

(12 citation statements)

References 34 publications

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“…Volatile organic compounds (VOCs) are a complex group of indoor air pollutants, being released for example by materials or during activities like cooking or smoking (Maroni et al, 1995;Salthammer, 1999). The indoor environment is characterized by a high surface (walls, furniture) to room volume ratio.…”

Section: Introductionmentioning

confidence: 99%

Diffusion studies of VOC mixtures in a building material

Meininghaus

Uhde

2002

Indoor Air

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Volatile organic compound (VOC) adsorption by indoor materials will reduce peak concentrations, and subsequent desorption will prolong the presence of a compound indoors. Diffusion within materials plays an important role in this context. The purpose of this paper is to present two experimental set-ups to study VOC diffusion, and to show corresponding experimental results. The Field and Laboratory Emission Cell (FLEC) is in both cases an integral part of the set-up. The mass flow of VOC mixtures across gypsum board is studied. Diffusion of less polar VOCs in gypsum board can be fast (diffusion coefficients of 0.001-0.003 m2/h). Diffusion coefficients of chlorinated compounds are correlated with boiling points and molecular areas. Different compounds show similar diffusion properties.

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Section: Introductionmentioning

confidence: 99%

Diffusion studies of VOC mixtures in a building material

Meininghaus

Uhde

2002

Indoor Air

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“…It describes the ability of components being emitted from a material -especially SVOCs -to be adsorbed within the emission test chamber. This effect is influenced by the construction materials of the test chambers or the air contact surfaces (Salthammer, 2009) and the polarity of the volatile compounds themselves. Furthermore, the samples in the emission test chambers also act as sinks (Zhao et al, 2002) however, this behavior cannot be easily controlled (Uhde and Salthammer, 2006).…”

Section: Influences On the Resultsmentioning

confidence: 99%

Investigations on the emissions of biocides and PCBs under low volume conditions

Mull¹,

Horn²,

Jann³

2015

Chemosphere

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“…The temperature was in all cases set to 23 AE 28C and the relative humidity to 50 AE 5%. Details are described elsewhere [43].…”

Section: Test Chambersmentioning

confidence: 99%

Catalyzed Reactions on Mineral Plaster Materials Used for Indoor Air Purification

Gunschera¹,

Markewitz²,

Koberski³

et al. 2013

CLEAN Soil Air Water

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Zeolites have been used for a long time for purification and catalytical purposes. Recently, first products appeared on the market using zeolites also for improving the indoor air quality so far volatile organic compounds (VOC) are concerned. However, porous compounds like zeolites can be found also in plaster material. Therefore, it was manifest to evaluate the capability of plaster with regard to air cleaning. In this article, the contribution of plaster compounds toward adsorption and catalytical decomposition of VOCs is evaluated using a-pinene, chlorobenzene, 2-ethoxyethylacetate, and pentanal as target substances under standard conditions (238C, 50% r.H.). These compounds were chosen because of their VOC typical physicochemical properties like molecular dimensions, density, boiling point, vapor pressure, and octanol-water distribution coefficient (logk ow ). Hydrated lime and metakaolin were found out to have good adsorption properties under these circumstances. Also natural zeolites showed good results especially on pentanal. By investigations in environmental chambers the reduction potential of test plasters on chlorobenzene and 2-ethoxyethylacetate concentrations could be shown. Application of coatings had no or only temporary influence on the performance of the plaster. Additional tests in small chambers demonstrated the possibility to improve the properties of plasters with help of FAU-or MFI-type zeolites but the experiments also showed that a-pinene and pentanal undergo chemical reactions. Further effort should be made on investigations also toward other compounds, especially more volatile ones like formaldehyde. Also additional building materials like insulation material or boards should be taken into account.

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Environmental Test Chambers and Cells

Cited by 17 publications

References 34 publications

Diffusion studies of VOC mixtures in a building material

Diffusion studies of VOC mixtures in a building material

Investigations on the emissions of biocides and PCBs under low volume conditions

Catalyzed Reactions on Mineral Plaster Materials Used for Indoor Air Purification

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