title: Polycyclic aromatic hydrocarbons from wood pyrolyis in charcoal production furnaces.
abstract: Polycyclic aromatic hydrocarbons (PAH) were measured in smoke samples from wood carbonization during charcoal production, in both particulate matter (PM) and gaseous phases. Samples were acquired using a medium-volume air sampler at 1.5 m distance from the furnace. Particle-bound PAH were collected on Fluoropore polytetrafluoroethylene filters and gas-phase PAH were collected into sorbent tubes with XAD-2 resin. PAH were extracted with dichloromethane-methanol and analyzed using gas chromatography-mass spectrometry. The results showed total emission from the furnace of 26 microg/m3 for the 16 PAH and 2.8 microg/m3 for the 10 genotoxic PAH (from fluoranthene to benzo[g,h,i]perylene). High emission of 16 PAH in the first 8 h of wood carbonization was detected (64 microg/m3; 56% of the total emission). Associated with PM, 11% of the total emission of 16 PAH (in both phases) and 60% of 10 genotoxic PAH were found. Relative ratios (for example, [Phe]/[Phe]+[Ant]) for the PAH of the same molecular weight were obtained and compared with the published data. The concentrations of benzo[a]pyrene equivalent (BaP(eq)) were estimated using the list of toxic equivalent factors suggested by . The values of 0.30 and 0.06 mg/m3 were obtained for the total concentrations of BaP(eq) in PM and gaseous phase, respectively.
authors.affiliation: Departamento de Química, Centro de Ciências Exatas e Tecnologia, UFMS, CP 549, 79070-900, Campo Grande, MS, Brazil.
authors.forename: Joyce Mara dos Santos
authors.initials: JM
authors.lastname: Barbosa
authors.forename: Nilva
authors.initials: N
authors.lastname: Ré-Poppi
authors.forename: Mary
authors.initials: M
authors.lastname: Santiago-Silva
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002606:Charcoal / Q000737:chemistry*; D005052:Eucalyptus / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D007220:Industrial Waste / Q000032:analysis*; D010316:Particle Size; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D014934:Wood
chemical_list: D000393:Air Pollutants; D007220:Industrial Waste; D011084:Polycyclic Aromatic Hydrocarbons; D002606:Charcoal