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Simultaneous determination of chlorinated aromatic hydrocarbons in fly ashes discharged from the industrial thermal processes

Abstract

Chlorinated aromatic hydrocarbons (CAHs) have received increasing attention because of their environmental persistent, bioaccumulation potential and high toxicity. In this study, an analytical methodology based on high-resolution gas chromatography/high-resolution mass spectrometry for the simultaneous determination of four typical kinds of CAHs including polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polychlorinated biphenyls (PCBs), polychlorinated naphthalenes (PCNs) and chlorinated polycyclic aromatic hydrocarbons (ClPAHs) in fly ash was developed. Highly effective cleanup and separation procedures combined with optimum instrumental conditions provided a reliable method for the detection and quantification of CAHs. Meanwhile, the spike of 13C-labeled standards and deuterated phenanthrene achieved more accurate measurement. The method detection limits were determined to be in the ranges of 0.1−13.4 pg g−1 for 17 PCDD/F congeners, 0.04−11.1 pg g−1 for 18 PCB congeners, 0.2−48.5 pg g−1 for 16 PCN congeners and 3.5−9.5 pg g−1 for 9 ClPAH congeners, respectively. Good recoveries of CAHs (62%−136%) were achieved, except for PCN-2 and PCN-6. The developed analytical methodology was validated and then used to determine the levels of CAHs in fly ashes collected from the industrial thermal processes. All the target compounds were detected out and the CAH congener concentrations showed a wide variation in different fly ashes.

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Publication details

The article was received on 23 Jun 2017, accepted on 28 Jul 2017 and first published on 31 Jul 2017


Article type: Paper
DOI: 10.1039/C7AY01545C
Citation: Anal. Methods, 2017, Accepted Manuscript
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    Simultaneous determination of chlorinated aromatic hydrocarbons in fly ashes discharged from the industrial thermal processes

    Y. Fan, H. Zhang, D. Wang, M. Ren, X. Zhang, L. Wang and J. Chen, Anal. Methods, 2017, Accepted Manuscript , DOI: 10.1039/C7AY01545C

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