Bioconcentration and trophic transfer of polychlorinated biphenyls and polychlorinated dibenzo-p-dioxins and dibenzofurans in aquatic animals from an e-waste dismantling area in East China

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dc.contributor.authorZhu, Chaofei
dc.contributor.authorWang, Pu
dc.contributor.authorLi, Yingming
dc.contributor.authorChen, Zhaojing
dc.contributor.authorLi, Wenjuan
dc.contributor.authorSsebugere, Patrick
dc.contributor.authorZhang, Qinghua
dc.contributor.authorJianga, Guibin
dc.date.accessioned2022-11-13T19:46:30Z
dc.date.available2022-11-13T19:46:30Z
dc.date.issued2015
dc.description.abstractEight aquatic biota species were collected from an e-waste dismantling area in East China to investigate bioconcentration and trophic transfer of polychlorinated biphenyls (PCBs), polychlorinated dibenzo-pdioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). The mean concentrations of PCBs varied widely from 6.01 104 to 2.27 106 pg per g dry weight (dw). The P25PCB concentrations in eels were significantly higher than those in other species. The levels of PCDD/Fs changed from 8.13 pg per g dw in toads to 617 pg per g dw in stone snails. World Health Organization-toxic equivalents (WHO2005-TEQs) ranged from 2.57 to 2352 pg WHO-TEQ per g dw with a geometric mean value of 64.7 pg WHO-TEQ per g dw, which greatly exceeded the maximum levels of 4 pg per g ww set by the European Commission. The log-transferred bioconcentration factors (BCFs) of 25 PCB congeners ranged from 1.0 to 6.6, with the highest value for CB-205 in crucian carp and the lowest value for CB-11 in frog. A parabolic correlation was observed between log BCF and log Kow (R2 ¼ 0.53, p < 0.001), where the maximum value occurred at a log Kow of approximately 7. A similar correlation was also found in the plot of log BCF against the number of chlorine atoms of PCBs (R2 ¼ 0.57, p < 0.001), indicating that mediumhalogenated congeners of PCBs are more easily accumulated by aquatic biota species. There were no significant correlations between the log-transferred concentrations and trophic levels of aquatic species, suggesting that trophic magnification for PCBs and PCDD/Fs was not observed in this study.en_US
dc.identifier.citationZhu, C., Wang, P., Li, Y., Chen, Z., Li, W., Ssebugere, P., ... & Jiang, G. (2015). Bioconcentration and trophic transfer of polychlorinated biphenyls and polychlorinated dibenzo-p-dioxins and dibenzofurans in aquatic animals from an e-waste dismantling area in East China. Environmental Science: Processes & Impacts, DOI: 10.1039/c5em00028aen_US
dc.identifier.other10.1039/c5em00028a
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/5222
dc.language.isoenen_US
dc.publisherEnvironmental Science: Processes & Impactsen_US
dc.subjectBioconcentrationen_US
dc.subjectTrophic transferen_US
dc.subjectPolychlorinated biphenylsen_US
dc.subjectPolychlorinated dibenzo-p-dioxinsen_US
dc.titleBioconcentration and trophic transfer of polychlorinated biphenyls and polychlorinated dibenzo-p-dioxins and dibenzofurans in aquatic animals from an e-waste dismantling area in East Chinaen_US
dc.typeArticleen_US
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