Article ID Journal Published Year Pages File Type
9451855 Chemosphere 2005 6 Pages PDF
Abstract
Newspapers impregnated with NaCl mixed with various chloride metals (CuCl2, MgCl2, MnCl2, FeCl3, NiCl2, and CoCl2) and electric wire coated with polyvinyl chloride (PVC) were combusted in a well-controlled incinerator. Exhaust gas samples collected at the outlet of the incinerator were analyzed for dioxins (PCDDs, PCDFs, and coplanar PCBs) by gas chromatography/mass spectrometry. The amount of total dioxins formed from newspaper samples ranged from 34.2 ng/g (with NaCl + CoCl2) to 67.0 ng/g (with NaCl + CuCl2). PCDFs composed 88-94% of the total dioxins formed in the exhaust gases. The highest levels of PCDF isomers obtained were Cl3-CDF from the sample with NaCl + CuCl2 (14.8 ng/g), Cl2-CDF from the sample with NaCl + MgCl2 (12.3 ng/g), and Cl1-CDF from samples with NaCl + MnCl2 (12.6 ng/g), with NaCl + FeCl3 (11.8 ng/g), and with NaCl + NiCl2 (13.3 ng/g), and with NaCl + CoCl2 (8.62 ng/g). The total of Cl4-8-CDDs comprised 76-88% of the total Cl1-8-CDDs. In particular, Cl7-CDDs had the highest levels except for the sample with NaCl + NiCl2. Total dioxins formed from samples of electric wire coated with PVC and PVC alone were 38.3 ng/g and 112 ng/g, respectively, suggesting that the presence of copper reduced dioxin formation.
Related Topics
Life Sciences Environmental Science Environmental Chemistry
Authors
, , , ,