DIOXIN AND FURAN EMISSION EVALUATION IN AUTOMOTIVE DIESEL ENGINES
Dioxins and furans were measured in particulate matter and gases from the exhaust of new heavy-duty diesel engines that comply with the EURO 3 emission limits and are representative of those used to equip new buses and trucks in Brazil at the time of the experiment. The tests were performed in a bench dynamometer using the ESC test. The analyses were performed by HRGC/HRMS in accordance with the USEPA Method 8290. The results indicated emissions generally below or near the detection limit. In one sample it was verified that octachlorodibenzo-p-dioxin (OCDD) was above but near the limit of detection, while in another sample, the same was found for octachlorodibenzofuran (OCDF) and pentachlorodibenzofuran (1,2,3,7,8-PeCDF). The results showed that emission of PCDD/Fs from diesel engines may not be so significant, for the level of technology of the engines tested and composition of the fuel used. The average emission factor obtained in this study (1.95 μg TEQ.t-1 of fuel) is higher than the emission factor recommended by UNEP in the Standardized Toolkit for Identification and Quantification of Dioxin and Furan Releases 2005 (0.1 μg TEQ.t-1 of fuel).
Raimundo P Nóbrega Joao V de Assuncao Célia R Pesquero Rui de Abrantes
Department of Environmental Health,School of Public Health,University of S(a)o Paulo,Av. Dr. Arnaldo Vehicular Emission Laboratory,S(a)o Paulo State Environment Agency (Cetesb),S(a)o Paulo,Brazil
国际会议
北京
英文
1-6
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）