1. 16 did not fit into any previously defined characterizations for various sources, and only two stations showed the effect of technical PCB mixtures as the source for PCN residues. However, more than 50 % of the stations showed values (1.5-2.4) approaching 2.5, possibly due to the influence of thermal sources. In Ulsan and Gwangyang Bays, all stations indicated the influence of thermal sources. In addition, combustion markers like CN52/60, CN66/67, and CN73 showed strong correlations with each other in all four bays (Table S11), providing further support for the main sources of PCNs in all four bays being combustion and thermal processes from industries. A recent study in Korea also reported thermal;; Bidleman;Therefore, the ratio of,2001
2. Emission profiles of polychlorinated dibenzodioxins, polychlorinated dibenzofurans (PCDD/Fs), dioxin-like PCBs and hexachlorobenzene (HCB) from secondary metallurgy industries in Portugal;P Antunes;Chemosphere,2012
3. Dioxin-like" PCB emissions from iron ore sintering plants in the UK;E Aries;Chemosphere,2006
4. Estimation and characterization of PCDD/Fs and dioxin-like PCBs from secondary copper and aluminum metallurgies in China;T Ba;Chemosphere,2009
5. Is combustion the major source of polychlorinated dibenzo-p-dioxins and dibenzofurans to the environment? A mass balance investigation;J I Baker;Environ. Sci. Technol,2000