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- W339724891 abstract "This study describes the fingerprints of chlorinated, brominated and brominated-chlorinated dibenzofurans and dibenzodioxins at two e-waste open burning/smouldering sites in Guiyu, China. The total concentrations of PXDD/PXDF in the soils were in ppm range. The total furan (PXDF) to dioxin (PXDD) ratios were around 100 revealing that PBDEs A as direct furan precursors were responsible for the formation of most of the dioxin-like compounds at the sites. The high levels of mixed chlorinated-brominated dibenzofurans and dibenzodioxins present as main contaminants at the open burning site reveal a significant bromine-chlorine exchange in PBDE A /PBDF most probably from PVC and chlorine containing additives (e-g. chlorinated paraffins, tetrachlorobisphenol A, etc.). The comparable concentrations of halogenated PXDF and precursor PBDEs at both sites indicate that a significant share of PBDEs was converted into PBDF/PXDF. When considering that several thousand tons of PBDE A are present in the 20 to 50 million tons of e-waste reaching the waste recycling sector every year, and that developing countries process a significant amount of e-waste utilizing rudimentary thermal processes, the load of halogenated PXDD/PXDF formed and released can be expected on the scale of tons and therefore possibly higher than all current inventoried PCDD/PCDF sources combined." @default.
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- W339724891 date "2009-01-01" @default.
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- W339724891 title "FINGERPRINTS of CHLORINATED, BROMINATED AND MIXED HALOGENATED DIOXINS AT TWO E-WASTE RECYCLING SITES IN GUIYU/CHINA" @default.
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