Evaluation of PBDD/Fs and PCDD/Fs emissions from metallurgical processes：A case study for fly ash sample from the EAF facility
Various industrial thermal sources involved in incinerators, crematories and metallurgic facilities were investigated for the occurrence and characteristic of 2,3,7,8-substituted polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) and polybrominated dibenzo-p-dioxins and furans (PBDD/Fs) in a forthcoming submitted work. The ranges of PBDD/Fs I-TEQ concentrations from the incinerators, crematories, and metallurgic facilities were found to be 12-54,10-23 and 140-1500 pg/Nm3, respectively. The concentration of PBDD/Fs from the metallurgical processes was considerable and such processes might act as potential important PBDD/Fs emission sources. In this study, fly ash sample collected from an electric arc furnace (EAF) was analyzed f as a case to evaluate PCDD/Fs and PBDD/Fs emission from metallurgical sources. The I-TEQ concentrations of PCDD/Fs and PBDD/Fs are 1.6 and 0.29 ng/g respectively while the total concentrations are 97 and 23 ng/g respectively in the fly ash sample. The difference existed in PBDD/Fs and PCDD/Fs congener and homologue profiles might be caused by the vibration of bromine inputs, stereo-structure of PBDD/Fs or different formation pathway and further researches are expected to carry out.
DU B LI LL LIU SF XU PJ TIAN HH LIU AM ZHENG MH
State Environmental Protection Key Laboratory of Dioxin Pollution Control,National Research Center f State Environmental Protection Key Laboratory of Dioxin Pollution Control,National Research Center f State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-Environmen
国际会议
北京
英文
1-3
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）