| Autor: |
Bernd Seifert, Heinz-Jörn Moriske, Detlef Ullrich, Wolfgang Mailahn |
| Rok vydání: |
1989 |
| Předmět: |
|
| Zdroj: |
Environment International, Vol 15, Iss 1, Pp 537-544 (1989) |
| ISSN: |
0160-4120 |
| DOI: |
10.1016/0160-4120(89)90073-1 |
| Popis: |
When interpreting seasonal variations of indoor concentrations of volatile organic compounds (VOC), the ventilation rate must be known. Therefore, a method has been developed which permits the simultaneous determination of the average ventilation rate and the concentration of VOC in a room over an integration period of two weeks with the same passive sampler. Hexafluorobenzene (HFB), a non-toxic substance, was chosen as the tracer so as not to interfere in the gas chromatographic analysis of VOC in indoor air. Emission rates of HFB sources were determined at various temperatures from 15 to 30°C. After a test of the procedure for sampling periods of one and two weeks in an experimental chamber at ventilation rates between 0.5 and 2 h−1, the procedure was successfully applied under field conditions. Good agreement was obtained when comparing the HFB method with a perfluorocarbon technique. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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