TY - CONF A1 - Mull, Birte A1 - Wilke, Olaf T1 - Photocatalytical degradation of selected volatile organic compounds in emission test chambers T2 - Indoor Air 2014 - 13th International conference on indoor air quality and climate (Proceedings) N2 - This work focuses on the photocatalytical degradation of selected volatile organic compounds (toluene, butyl acetate, phenol and limonene) under UV-light and blue LED-light (λ = 444 nm) at different relative humidities. Ceramic tiles coated with titanium dioxide were used as photocatalytical active material. The experiments were performed in 20 l emission test chambers with two different kinds of pollutant supply. Toluene was the compound with the highest degradation rate in all performed experiments. A degradation rate of 24 % was obtained under blue LED-light and a relative humidity of (50 ± 5)% and a degradation rate up to 80 % was obtained under UV-light in dry air. T2 - Indoor Air 2014 - 13th International conference on indoor air quality and climate CY - Hongkong, China DA - 07.07.2014 KW - Photocatalysis KW - Titanium dioxide KW - Volatile organic compounds KW - Emission test chamber KW - UV-light PY - 2014 SP - HP0549, 1 EP - 5 AN - OPUS4-31364 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf A1 - Pech, Anja A1 - Mull, Birte A1 - Horn, Wolfgang A1 - Jann, Oliver T1 - Determination of methanol and ethanol in test chamber air by using TDS-GC-FID T2 - Indoor Air 2014 - 13th International conference on indoor air quality and climate (Proceedings) N2 - A method for the determination of very volatile organic compounds (VVOC) in air was developed and successfully tested for methanol and ethanol. Carbotrap 300 (R) (a multi-bed tube using Carbopack C (R), Carbopack B (R) and Carbosive SIII (R)) was selected as sorption material for thermal desorption and tested for its suitability for emission test chamber measurements. The adsorption behaviour and the chromatographic results are influenced negatively by spiking aqueous solutions on the adsorption medium for calibration purposes. The latter effect can be reduced by blowing dry air across the adsorbent to remove the adsorbed water. Detection and quantification limits were determined for a GC-FID system and compared to GC-MS. The applicability of the method was tested with a methanol eliminating silane modified polymeric adhesive (SMP-adhesive for parquet) in an emission test chamber. T2 - Indoor Air 2014 - 13th International conference on indoor air quality and climate CY - Hong Kong, People's Republic of China DA - 07.07.2014 KW - Methanol KW - Ethanol KW - VVOC KW - Thermal desorption KW - Carbotrap 300 PY - 2014 SP - B6-HP0620, 1-2 AN - OPUS4-32323 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -