Temporal trends of PCBs, PCDD/Fs and PBDEs in soils from an E-waste dismantling area in East ChinaShow others and affiliations
2013 (English)In: Environmental Science: Processes & Impacts, ISSN 2050-7887, E-ISSN 2050-7895, Vol. 15, no 10, p. 1897-1903Article in journal (Refereed) Published
Abstract [en]
The temporal trends of polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and polybrominated diphenyl ethers (PBDEs) were investigated in soils from an E-waste dismantling area in East China between 2005 and 2011. Isotope dilution high resolution gas chromatography/high resolution mass spectrometry (HRGC/HRMS) was employed for the sample analysis. PCB levels declined as expected, while PCDD/Fs generally remained at a constant level during the sampling period, and PBDE concentrations tended to be slightly lower after 2007 although the decline was not statistically significant. The congener profiles indicated that lowly-halogenated congeners of these persistent organic pollutants (POPs) accounted for the decreasing levels and relative proportions of the POPs, suggesting that they have been gradually eliminated from the field soil over the years. However, the concentration levels of some heavy congeners (e.g., CB-209, OCDD and OCDF) showed different trends from those of the lighter ones. The general tendencies of the three types of POPs in soils were consistent with those reported in other studies in this area. The results implied that the enhanced regulations and centralized dismantling action introduced in 2005 might exert a limited influence on these three types of POPs in soils during the sampling period.
Place, publisher, year, edition, pages
Royal Society of Chemistry , 2013. Vol. 15, no 10, p. 1897-1903
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:liu:diva-193821DOI: 10.1039/c3em00297gISI: 000324933000012PubMedID: 23989404Scopus ID: 2-s2.0-84884768496OAI: oai:DiVA.org:liu-193821DiVA, id: diva2:1757387
Note
Sponsors:
National Natural Science Foundation of China Grant(s): 21107121 21277165 21107122
National High Technology Research and Development Program of China Grant(s): 2011AA060604
2023-05-162023-05-162023-05-29