Please use this identifier to cite or link to this item: https://doi.org/10.1021/es202078n
DC FieldValue
dc.titleNovel perspectives on the bioaccumulation of PFCs - The concentration dependency
dc.contributor.authorLiu, C.
dc.contributor.authorGin, K.Y.H.
dc.contributor.authorChang, V.W.C.
dc.contributor.authorGoh, B.P.L.
dc.contributor.authorReinhard, M.
dc.date.accessioned2014-10-09T07:38:01Z
dc.date.available2014-10-09T07:38:01Z
dc.date.issued2011-11-15
dc.identifier.citationLiu, C., Gin, K.Y.H., Chang, V.W.C., Goh, B.P.L., Reinhard, M. (2011-11-15). Novel perspectives on the bioaccumulation of PFCs - The concentration dependency. Environmental Science and Technology 45 (22) : 9758-9764. ScholarBank@NUS Repository. https://doi.org/10.1021/es202078n
dc.identifier.issn0013936X
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/91096
dc.description.abstractThe effects of exposure concentration on the bioaccumulation of four perfluorinated chemicals (PFCs): perfluorooctanesulfonate (PFOS), perfluoroocanoic acid (PFOA), perfluorononanoic acid (PFNA), and perfluorodecanoic acid (PFDA), was investigated using green mussels, Perna viridis. Mussels were exposed to concentrations of 1 μgL-1 and 10 μgL-1 of each PFC for 56 days, and the bioaccumulation factors (BAF) were found to range from 15 to 859 L/kg and from 12 to 473 L/kg at 1 μgL-1 and 10 μgL-1, respectively. For all compounds, the BAF was larger at the lower dosage. Results suggest that the bioaccumulation of PFCs is concentration dependent. This concentration dependency can be explained by a nonlinear adsorption mechanism, which was further supported by the experimental results. The sensitivity of BAF to exposure concentration was found to be positively related to perfluorinated chain length and the binding affinity of the compounds. Bioaccumulation of long chain carboxylates and sulfonates are more easily affected by concentration changes. The validity of the conventional kinetic method was examined by comparing the results with the fundamental steady-state method: in addition to the above-mentioned batch test, mussels were also subject to 24-day exposure (1 μgL-1 and 10 μgL-1) followed by 24-day depuration. Contradictions were found in the resulting kinetic BAF and model curving fittings. A new kinetic model based on adsorption mechanism was proposed, which potentially provide more accurate description of the bioaccumulation process of PFCs. © 2011 American Chemical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/es202078n
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCIVIL & ENVIRONMENTAL ENGINEERING
dc.description.doi10.1021/es202078n
dc.description.sourcetitleEnvironmental Science and Technology
dc.description.volume45
dc.description.issue22
dc.description.page9758-9764
dc.description.codenESTHA
dc.identifier.isiut000296756500039
Appears in Collections:Staff Publications

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