I found this:
Emission products of petroleum-based candles
Ruhullah Massoudi, firstname.lastname@example.org
and Amid Hamidi, email@example.com
, Department of Biological and Physical Sciences, South Carolina State University, 300 College Street NE, Orangeburg, SC 29117
This brief reports the summary of our investigation of the emission products concerning paraffin wax compositions obtained from different candle manufacturers. The composition of emission products were identified by a Perkin-Elmer TurboMass GC/MS system equipped with a NIST Library of compounds. The experiment was carried out by burning the candles in a chamber (8 x 8 x 26) connected to a pump on the top, where the mixture of gases passed through an ampoule containing activated coconut charcoal at 0.20 L/min. Normal burning patterns were constantly monitored. After five to six hours of burning, the contents of the ampoule were transferred into spectroscopic grade of carbon disulfide to dissolve adsorbed materials then injected in the GC/MS to be analyzed. Paraffin-based candles produced clear sharp peaks for presence of many products such as toluene, alkanes, alkenes, as well as some ketones and aldeydes. Results proved largely reproducible.