doi:

DOI: 10.3724/SP.J.1096.2013.30514

Chinese Journal of Analytical Chemistry (分析化学) 2013/41:12 PP.1862-1868

Simultaneous Determination of Polychlorinated Dibenzo-p-Dioxins/Furans, Polybrominated Dibenzo-p-Dioxins/Furans, Polychlorinated Biphenyls and Polybrominated Diphenyl Ethers by Isotope Dilution-High Resolution Gas Chromatography-High Resolution Mass Spectrometry in Ambient Air


Abstract:
A method for simultaneous determination of polychlorinated dibenzo-p-dioxins/furan (PCDD/Fs), polybrominated dibenzo-p-dioxins/furans (PBDD/Fs), polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) was established by using elution curve and fraction cut technology to eliminate the PCB and PBDE blank of interference and optimize the pre-treatment. The technology was developed using AutoSoxtec, acid silica gel column, multi-layered silica gel column and active carbon column. The sample recovery of sampling standards was in the range of 63%-100% and the recovery of internal standards was in the range of 52%-132%. The detection limits was between 6×10-4-1×10-2 pg/m3, dicabromodiphenyl ether (BDE-209) was 0.3 pg/m3, which reached the US Environmental Protection Agency (EPA) standards. Air sample toxic equivalent quantity (TEQ) (PCDD/Fs, dl-PCBs) was between 0.216-0.949 pg/L WHO-TEQ, TEQ(PBDD/Fs) was 0.0181-0.0462 pg/L WHO-TEQ, and PBDEs content was 105-132 pg/m3.

Key words:Dioxin,Simultaneous determination,Isotope dilution,High performance resolution gas chromatography-high resolution mass spectrometry

ReleaseDate:2015-04-19 11:08:05



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