Bioaccumulation and trophic transfer of PAEs and APs in aquatic organisms
In this study,7 phthalate esters(PAEs)and 13 alternative plasticizers(APs)in aquatic organisms from the disused e-waste dismantling site and freshwater fish in the Beijiang River in Qingyuan City,Guangdong Province were detected to investigate their bioaccumulation and trophic transfer.The total concentrations of PAEs and APs in aquatic organisms from the disused e-waste dismantling site and freshwater fish in the Beijiang River were 20～974ng/g ww and 1.25～181ng/g ww,264～370ng/g ww and 27～62ng/g ww,respectively.Di-butyl phthalate and di-(2-ethylhexyl)phthalate were dominant PAE pollutants,while bis(2-ethylhexyl)terephthalate was predominant AP pollutant.The concentrations and compositions of PAEs and APs significantly varied among different aquatic organisms in the e-waste dismantling site,which were closely related to their different feeding habits,growth stages,and metabolic capacity.There is no significant difference between the mud carp and tilapia in the Beijiang River,which were mainly related to their similar habitat environment,feeding behaviour,and lipid content.Both the concentrations based on wet weight and lipid weight for dimethyl phthalate were significantly and positively correlated with nitrogen isotope(δ15N)values,and trophic magnification factors(TMF)were 1.65 and 1.88,respectively.In addition,the concentration based on lipid weight for diphenyl phthalate was significantly and positively correlated with δ15N values,and TMF was 1.91.
PAEsAPsaquatic organismsbioaccumulationtrophic transfer
万方数据
维普
