Inventories and Characteristics of BrominatedUP-POPs Emission from Industrial processes in China DU Bing（Environmental Science） Directed by Professor ZHENG Minghui Polychlorinated dibenzo-p-dioxins and dibenzofurans（PCDD/F） were under the control of the Stockholm Convention on persistent organic pollutants. Polybrominated dibenzo-p-dioxins and dibenzofurans（PBDD/F），mixed brominated and chlorinated dibenzo-p-dioxins and dibenzofurans（PBCDD/F） and polybrominated diphenyl ethers（PBDEs） were considered as candidate UP-POPs and received much attention in recent years. However, very littly is kown about the potential industrial emission sources for these “new” POPs, Further researches were expected to carry out. In this study, the occurrences and characteristics of PCDD/F, PBCDD/F, PBDD/F and PBDEs from various industrial thermal processes were investigated through selected typical facilities. In addition, the possible formation and sources of PCDD/F, PBDD/F, PBCDD/F and PBDEs in these industrial processes were discussed and presented. Further more, the emission rates and emission factors from each process was given based on measured value from selected facilities. Finally， the inventories of investigated Unintentional Produced Persistent Organic Pollutants (UP-POPs) were estimated.The main contents were list as below: The same-sample determination protocols including sampling, extraction, clean-up and instrument analysis of PCDD/F, PBDD/F, PBCDD/F and PBDEs based on Isotope dilution HRGC/HRMS methed were developed and validated. The occurrence and characteristics of 2,3,7,8 substituted polybrominated and polychlorinated dibenzo–p–dioxins and dibenzofurans（PBDD/F，PBCDD/F and PCDD/F） from various industrial thermal processes（HWI, MWI, Cremators, Sinter plant, EAF and secondary metallurgical industry including secondary copper, secondary aluminum, secondary zinc and secondary lead ） were investigated. The results indicated that metallurgic processes could be important sources of PBDD/F. Results indicated that PBDD/F formation was via a brominated precursor mechanism while PCDD/F and lower brominated PBCDD/F（mono and di，up to tri in some cases） were formed throμgh de novo mechanisms. For higher brominated PBCDD/F formation，both de novo mechanism and chlorine–bromine exchange might be involved. Finally，an approach to identify the PBDD/F sources in ambient air by the PBDD/F to PCDD/F ratio was developed. The emission level and characteristics of PBDD/F, PBDEs and some BFRs from sinter plants, electric arc furnaces for steel-making and secondary metallurgical industries were investigated comprehensively for the first time in China. In addition the emission factors from different industries of these UP-POPs were provied and the UP-POPs inventories for industrial sources were estimated with 2008 as reference year.