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

Wen, Shi Wu; Yang, Fangxing; Li, J.G.; Gong, Yan; Zhang, X.L.; Ye, Hui; Wu, Yongning; Zhao, Yuping; Xu, Ying

doi:10.1016/j.chemosphere.2008.10.002

Cited by 83 publications

(47 citation statements)

References 31 publications

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“…In comparison with other studies, the concentrations of PBDEs in wild plants were comparable to those in tree and shrub leaves (17.1e64.2 ng/g) (Ma et al, 2009), and bark sample of Cedrus deodara (25.3 ng/g) (Wen et al, 2009) around e-waste recycling sites, but lower than the metasequoia bark (244 ng/g) (Liu et al, 2008), and Cinnamomum camphora leaves (12.8e400 ng/g) collected from other e-waste recycling sites (Zhao et al, 2009c). However, the concentrations of PBDEs in vegetable were much higher than those collected from e-waste recycling site in Zhejiang Province (Zhao et al, 2009a), which may pose a potential risk to the consumers.…”

Section: Levels Of Pbdes In the Plant Samplesmentioning

confidence: 77%

Characterization of PBDEs in soils and vegetations near an e-waste recycling site in South China

Wang¹,

Luo²,

Li³

et al. 2011

Environmental Pollution

148

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Section: Levels Of Pbdes In the Plant Samplesmentioning

confidence: 77%

Characterization of PBDEs in soils and vegetations near an e-waste recycling site in South China

Wang¹,

Luo²,

Li³

et al. 2011

Environmental Pollution

148

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“…Table 1 listed PCDD/F contents (concentrations) in the feeding woodchips, bottom residues, cyclone ashes, bag filter ashes and stack flue gases of the wood-fuelled industrial boiler. The mean PCDD/F contents of the woodchips based on mass and toxicity were 8.38 ng/kg and 0.0730 ng I-TEQ/kg, respectively, which are close to that (2 ng/kg) in the tree barks sampled in urban area (Di Lella et al, 2006), but much lower than that (22.8 ng I-TEQ/kg) in the tree barks collected in the polluted area (Wen et al, 2009).…”

Section: Quality Assurance and Quality Control (Qa/qc)mentioning

confidence: 92%

Fate and Distribution of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in a Woodchip-fuelled Boiler

Chen

Shen

Hsieh

et al. 2011

Aerosol Air Qual. Res.

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As yet, very little is known about the PCDD/F fate and distribution in the woodchip-fuelled boilers. In this study, the feeding woodchips, stack flue gases and the ashes in different units of a woodchip-fuelled boiler are sampled to investigate their PCDD/F characteristics. The PCDD/F contents in the bottom residues and fly ashes ranged from 18.9 to 66.3 ng I-TEQ/kg, which are below the Taiwanese PCDD/F regulation for reutilization of bottom residues, but still higher than PCDD/F limitations on soils for agricultural use (10 ng I-TEQ/kg), which are adopted by several countries. From the PCDD/F output/input ratios, we found that combustion of woodchips in the boiler system is more favourable for the formations of PCDFs by de novo syntheses, especially for lower chlorinated PCDF congeners. Although about half of the input PCDD/Fs mass are destroyed in the combustion, the output PCDD/Fs toxicity are 6.9 times higher than the inputs. Fly ashes exhibited the highest PCDD/F distributions among the woodchip-fuelled boiler. Still 21.4% of total PCDD/F mass and 18.0% of total PCDD/F toxicity were emitted from the stack flue gases due to the lack of control devices for gaseous phase PCDD/Fs. Decreasing de novo syntheses among the boiler systems, deploying control devices for gaseous phase PCDD/Fs, and proper management on the reutilization of fly ashes will ensure woodchip-fuelled boilers as a sustainable and renewable biomass energy.

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“…이럴 때 유용하게 이용되는 것이 passive air sampler (PAS)이다. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] 지금까지 대기 중 PCBs 등 POPs의 PAS로는 나 뭇잎, 나무껍질, 이끼와 토양 등이 많이 이용되어 왔 다. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] …”

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Depositional Characteristics of Atmospheric PCBs in Several Media Used Passive Air Samplers

Chun¹

2013

Korean Journal of Environmental Health Sciences

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Objective: This study was carried out to determine the depositional characteristics of pine needles, pine tree bark, moss, and soil, which are used as a passive air sampler (PAS) of atmospheric polychlorinated biphenyls (PCBs).Methods: All four media were sampled from the same site. PCB concentrations were analyzed by GC/MSD, and the lipid contents were measured using the gravimetric method. Results:The total PCB concentration (IUPAC No. 28, 52, 101, 138, 153, 180) was the highest in soil (227.97 pg/g dry), followed by pine needles (71.36 pg/g dry), pine tree bark (44.58 pg/g dry), then moss (21.91 pg/g dry).Pine needles contained the highest lipid contents (21.31 mg/g dry), whereas soil (10.01 mg/g dry), pine tree bark (4.85 mg/g dry), and moss (1.92 mg/g dry) contained less. The concentration of lower-chlorinated PCBs was relatively high in pine needles, pine tree bark and moss, but not in soil. The PCB concentrations were proportional to their lipid contents in pine needles, pine tree bark and moss, but a different trend was revealed in soil. Conclusions:The PCBs concentrations in the media were affected by various factors including atmospheric PCB concentrations, lipid contents, and depositional pathways. However, each of these factors had a varying influence depending on the type of medium.

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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

Cited by 83 publications

References 31 publications

Characterization of PBDEs in soils and vegetations near an e-waste recycling site in South China

Characterization of PBDEs in soils and vegetations near an e-waste recycling site in South China

Fate and Distribution of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in a Woodchip-fuelled Boiler

Depositional Characteristics of Atmospheric PCBs in Several Media Used Passive Air Samplers

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