Study on the initial evaporation rates of distilled sulphur mustard (HD) in concrete using wind tunnel and TD-GC/MSD: effect of drop size and temperature
| Autor: | Hae Wan Lee, Hyunsook Jung |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Drop size
Health Toxicology and Mutagenesis Drop (liquid) Public Health Environmental and Occupational Health Analytical chemistry Thermal desorption Soil Science chemistry.chemical_element Mass spectrometry Pollution Sulfur Analytical Chemistry chemistry Spreading factor Environmental Chemistry Gas chromatography Waste Management and Disposal Water Science and Technology Wind tunnel |
| Zdroj: | International Journal of Environmental Analytical Chemistry. 95:569-579 |
| ISSN: | 1029-0397 0306-7319 |
| Popis: | In this paper, we demonstrate a robust, analytical method for the study of the initial evaporation rates of distilled sulphur mustard (HD) in concrete at various drop sizes and temperatures. We used a 5-cm wind tunnel and thermal desorption (TD) in connection with gas chromatograph and mass spectrometry detection (GC/MSD). Drops of neat HD, ranging in sizes of 1, 3, 6 and 9 µL, were applied to small concrete coupons. The temperatures were either 18°C, 25°C, 35°C or 50°C. The drop of HD rapidly spread in concrete upon its release. The initial evaporation rates of the drop of HD were analysed by TD in conjunction with GC/MSD. The results showed that the initial evaporation rates increased while HD spread over the surface of concrete, then decreased as the contamination was over. We also found that the initial evaporation rates of the drop of HD in concrete are linearly proportional to drop size and temperature. In particular, drop size or spreading factor has a more pronounced effect on the initial evaporat... |
| Databáze: | OpenAIRE |
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