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Polychlorinated dibenzo-p-dioxin and dibenzofurans (PCDD/Fs), polybrominated diphenyl ethers (PBDEs), and polychlorinated biphenyls(PCBs) monitored by tree bark in an E-waste recycling area
作者: Sheng WEN, F. YANG, J. G. LI, Yan GONG, X. L. ZHANG, Y. HUI, Y. N. WU, Y. F. ZHAO, Ying XU
通讯作者: Ying XU
摘要:

To investigate the environmental levels and profiles of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polybrominated diphenyl ethers (PBDEs), and polychlorinated biphenyls (PCBs), tree bark samples (n = 22) were collected from Luqiao, an E-waste recycling area, in east China in July 11–13, 2006. The average concentrations of PCDD/Fs, PBDEs, and PCBs determined by isotope dilution-high resolution gas chromatography (HRGC) coupled with high resolution mass spectrometer (HRMS) were 0.1 ± 0.0, 1.4 ± 0.2, and 6.5 ± 0.8 μg g−1 lipid weight, respectively. PCDD/F-toxic equivalent (TEQ, WHO-1998), PCB-TEQs, and total dioxin-like TEQs were 1.3 ± 0.1, 0.5 ± 0.0, and 1.8 ± 0.2 ng g−1 lipid weight, respectively. The profiles of these pollutants in the tree bark were also discussed. Tetra-CDFs, deca-BDE and tri-CBs were the main homologues and accounted for 47% of total PCDD/Fs, 79.3% of total PBDEs, and 33.2% of total PCBs, respectively; As for TEQs, 2,3,4,7,8-PeCDF and PCB126 were the main contributors and accounted for 36% of the total PCDD/F-TEQs and 81.2% of the total PCB-TEQs, respectively. High accumulation of PCDD/Fs, PBDEs, and PCBs detected in the tree bark indicated heavy contaminations of these pollutants in Luqiao area.

卷: 74
期: 7
页码: 981-987
发表时间: 2008-11-31
刊物名称: CHEMOSPHERE
全文链接: http://dx.doi.org/10.1016/j.chemosphere.2008.10.002

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