Title: Comparison and relationship of polychlorinated dibenzo-p-dioxins and dibenzofuran levels between stack gas and fly ash samples from waste incinerators

Authors: Rong Jin; Yuyang Zhao; Guorui Liu

Addresses: State Key Laboratory of Environmental, Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China ' State Key Laboratory of Environmental, Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China ' State Key Laboratory of Environmental, Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China

Abstract: In this study, the relationship between polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in stack gas and fly ash phases was investigated to evaluate if the exchange of PCDD/F congeners between the two media would affect PCDD/Fs characteristics. The concentration, congener profile of PCDD/Fs and ratios of PCDDs to PCDFs in stack gas and fly ash were compared. Spearman correlations between lower chlorinated congeners in fly ash and congeners in stack gas were significant, suggesting that lower chlorinated congeners were prone to exchange between the two phases. However, Spearman correlations of the other PCDD/F congeners between stack gas and fly ash were not significant, indicating exchange of these PCDD/F congeners between the two phases was minimal.

Keywords: polychlorinated dibenzo-p-dioxins and dibenzofuran; waste incinerator; correlation analysis; congener profile; stack gas; fly ash.

DOI: 10.1504/IJEP.2017.087771

International Journal of Environment and Pollution, 2017 Vol.61 No.3/4, pp.197 - 207

Available online: 27 Oct 2017 *

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