Effect of reaction time on PCDD and PCDF formation by de novo synthetic reactions under oxygen deficient and rich atmosphere |
| |
| Authors: | Grabic R Pekárek V Ullrich J Puncochár M Fiserová E Karban J Sebestová M |
| |
| Institution: | National Reference Laboratory for POPs, The District Public Health Department, Frydek Místek, Czech Republic. |
| |
| Abstract: | The effect of reaction time on formation of polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) was studied under laboratory conditions in the system containing municipal waste incineration fly ash, activated carbon and copper chloride dihydrate at 300 degrees C in 99.999% N2 and N2 + 10% O2 atmosphere. The concentrations of tetra- to octa-chlorinated isomers as well as I-TEQ concentrations of toxic congeners are reported. The mechanism of PCDD and PCDF formation from chlorophenols and chlorinated biphenyls is discussed in the light of the time changes of PCDD/PCDF ratios. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
