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.
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 microg 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.
Wen
Sheng
S
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China.
Yang
F
F
Li
J G
JG
Gong
Yan
Y
Zhang
X L
XL
Hui
Y
Y
Wu
Y N
YN
Zhao
Y F
YF
Xu
Ying
Y
D001572:Benzofurans / Q000032:analysis*; D003247:Conservation of Natural Resources; D000072338:Dibenzofurans, Polychlorinated; D004581:Electronics; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000032:analysis*; D055768:Halogenated Diphenyl Ethers / Q000032:analysis*; D007220:Industrial Waste; D024301:Plant Bark / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis
D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D004785:Environmental Pollutants; D055768:Halogenated Diphenyl Ethers; D007220:Industrial Waste; D000072317:Polychlorinated Dibenzodioxins; D011078:Polychlorinated Biphenyls