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Same-sample determination of ultratrace levels of polybromodiphenylethers, polybromodibenzo-p-dioxins/furans, and polychlorodibenzo-p-dioxins/furans from combustion flue gas
Citation:
Wyrzykowska, B., D. G. TABOR, AND B. K. GULLETT. Same-sample determination of ultratrace levels of polybromodiphenylethers, polybromodibenzo-p-dioxins/furans, and polychlorodibenzo-p-dioxins/furans from combustion flue gas. Analytical Chemistry. American Chemical Society, Washington, DC, 81(11):4434-4440, (2009).
Impact/Purpose:
Journal article
Description:
The analytical method used for determination of polychlorinated dibenzo-p-dioxins and -furans (PCDDs/Fs) emissions from municipal waste combustors and other stationary sources was modified and validated to enable simultaneous analysis of ultra trace levels of polybrominated diphenylethers (PBDEs) and polybrominated dibenzo-p-dioxins and -furans (PBDDs/Fs). Potential methodological problems related to physico-chemical properties of brominated compounds, including UV and temperature-induced debromination and degradation, were addressed. The selection of solvents, optimization of extraction time, and adaptation of the clean-up and fractionation steps increased mean recoveries of 13C12-labeled PBDEs and PBDDs/Fs isotope dilution surrogates about 18% and 25%, respectively. The customary liquid chromatography isolation of PBDEs and PBDDs/Fs was replaced by optimization of high resolution gas chromatography to separate target PBDFs (2,3,7,8-Br-substituted) from potentially interfering PBDEs before mass spectroscopic identification. The optimized method allowed quantitative determination of 56 mono- through deca-bromodiphenylether congeners; 15 congeners of 2,3,7- and 2,3,7,8-Br-substituted tri- to octa-bromodibenzo-p-dioxins and -furans; and all 210 polychlorinated dibenzo-p-dioxins and -furans present in the flue gas at levels of picogram to microgram per normalized cubic meter.
URLs/Downloads:
NRMRL RTP P 1022.PDF (PDF, NA pp, 375 KB, about PDF)SAME-SAMPLE DETERMINATION OF ULTRATRACE LEVELS OF POLYBROMODIPHENYLETHERS, POLYBROMODIBENZO-P-DIOXINS/FURANS, AND POLYCHLORODIBENZO-P-DIOXINS/FURANS FROM COMBUSTION FLUE GAS
