Polycyclic aromatic hydrocarbons (PAHs) in indoor emission from decorative candles
- Authors: Orecchio, S.
- Publication year: 2011
- Type: Articolo in rivista (Articolo in rivista)
- OA Link: http://hdl.handle.net/10447/53492
This study investigates PAHs indoor emissions from burning decorative candle in an indoor environment because emissions from burning wax in home have rarely been addressed. A total of 12 air samples were collected during the entire burning period of the decorative candles. Particulate and gaseous PAHs emissions were simultaneously measured by passing effluent through a filter (to collect particulatephase PAHs), a cold trap and ORBO 43 tubes (to capture gaseous-phase PAHs). Analysis involved ultrasound extraction, followed by gas chromatographyemass spectrometry (GCeMS). The measured total PAHs concentration (particulate þ aqueous phase þ gas phases) for the candles, reported as mass of PAHs emitted/mass of candle burning, was between 2.3 and 49.8 mg kg 1 and mean 15 mg kg 1. Considering the volume of sampled air, the concentrations of total PAHs ranged from 7 ngm 3 to 267 ng m 3. Concentrations of B[a]P emitted by candles ranged from 0.1 to 7.5 ng m 3, while total carcinogenic PAHs, expressed as B[a]eq, ranged from 0.2 to 10.7 ng m 3. The values of all the isomeric indices calculated in this research are in good agreement to literature data for emissions from high temperature processes.