This study investigates PAHs indoor emissions from burning decorative candle in an indoor environmentbecause emissions from burning wax in home have rarely been addressed. A total of 12 air samples werecollected during the entire burning period of the decorative candles. Particulate and gaseous PAHsemissions were simultaneously measured by passing effluent through a filter (to collect particulatephasePAHs), a cold trap and ORBO 43 tubes (to capture gaseous-phase PAHs). Analysis involvedultrasound 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 mean15 mg kg 1. Considering the volume of sampled air, the concentrations of total PAHs ranged from 7 ngm 3 to267 ng m 3. Concentrations of B[a]P emitted by candles ranged from 0.1 to 7.5 ng m 3, while total carcinogenicPAHs, expressed as B[a]eq, ranged from 0.2 to 10.7 ng m 3. The values of all the isomeric indicescalculated in this research are in good agreement to literature data for emissions from high temperatureprocesses.
|Numero di pagine||8|
|Stato di pubblicazione||Published - 2011|
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