Płonące na cmentarzach znicze - zrobione z parafiny - wydzielają cały szereg szkodliwych substancji dla zdrowia. Ich kumulacja na cmentarzach w weekendzie zaduszkowym prowadzi do wielokrotnego przyrostu szkodliwych dla zdrowia substancji na cmentarzach oraz w ich okolicy w tym rakotwórczego benzenu i toluenu. Zainteresowanych problemem odsyłam do podlinkowanych materiałów - w tym badań przeprowadzonych przez polskich naukowców na cmentarzach w Opolu i Grodkowie. "Research findings concerning benzene, toluene, ethylobenzene, meta-, para- and ortho-xylene as well as styrene (BTEXS) emission at public cemeteries during All Saints’ Day are presented here. Tests were carried out at town-located cemeteries in Opole and Grodków (southern Poland) and, as a benchmark, at the centres of those same towns. The purpose of the study was to estimate BTEXS emissions caused by the candle burning and, equally important to examine, whether emissions generated by the tested sources were similar to the BTEXS emissions generated by road transport. During the festive period, significant increases in benzene concentrations, by 200 % and 144 %, were noted at the cemeteries in Opole and Grodków, as well as in toluene, by 366 % and 342 %, respectively. Styrene concentrations also increased. It was demonstrated that the ratio of toluene to benzene concentrations from emissions caused by the burning candles are comparable to the ratio established for transportation emissions." www.ncbi.nlm.nih.gov/pmc/articles/PMC3824304/www.ehso.com/ehshome/candles2.htm | 
