{"refrec":{"BRefID":6390,"RR":"<b>Traas, T.P.; Luttik, R.; Klepper, O.; Beurskens, J.E.M.; Smit, M.D.; Leonards, P.E.G.; Van Hattum, A.G.M.; Aldenberg, T.</b> (2001). Congener-specific model for polychlorinated biphenyl effects on otter <i>(Lutra lutra)</i> and associated sediment quality criteria. <i>Environ. Toxicol. Chem. 20(1)</i>: 205-212. <a href=\"https://dx.doi.org/10.1002/etc.5620200124\" target=\"_blank\">https://dx.doi.org/10.1002/etc.5620200124</a>","BEntID":6390,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Environ. Toxicol. Chem. 20(1)</i>: 205-212. <a href=\"https://dx.doi.org/10.1002/etc.5620200124\" target=\"_blank\">https://dx.doi.org/10.1002/etc.5620200124</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Traas, T.P.; Luttik, R.; Klepper, O.; Beurskens, J.E.M.; Smit, M.D.; Leonards, P.E.G.; Van Hattum, A.G.M.; Aldenberg, T.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Traas, T.P. <i>et al.</i>","Englishabstract":"A model for risk assessment was built for simultaneous, congener-specific PCB bioaccumulation from sediment to fish to otters (Lutra lutra). Toxic equivalence factors (TEFs) were used to sum individual congeners in otters to a toxic equivalent concentration (TEQ) relative to 2,3,7 ,8-tetrachlorodibenzo-p-dioxin. Microbial dechlorination and burial in sediments and bioaccumulation are modeled to predict time trends of PCB concentrations in otters. Effects of accumulated PCBs on otters were assessed for vitamin A metabolism and reproduction, taking model uncertainty into account. Three locations in The Netherlands were modeled with PCB levels in sediment of I to 171 pg TEQ/g organic carbon (OC). Almost 100% reduction in litter size was predicted for the most polluted area in 1996. Due to large associated uncertainty, a period of 25 to 80 years may be needed for recovery of otter vitamin A levels and litter size at this site. Calculated median sediment quality criteria (SQC) range between I and 12 pg TEQ/g OC, depending on the chosen effect criterion. Uncertainty in calculated effects and SQCs is substantial and is mainly caused by uncertainty in PCB congener 126 accumulation.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Congener-specific model for polychlorinated biphenyl effects on otter <i>(Lutra lutra)</i> and associated sediment quality criteria","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-10 01:31:16.643902","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2001,"MonPub":null,"DateUpdate":"2023-02-16","DateCreate":"2001-02-28","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000165937700024","VABBcode":null,"OpenAcc":0,"DOI":"10.1002/etc.5620200124"},"refs":null,"anarec":{"AnaID":6390,"PubliDate":2001,"Pagination":"205-212","XtraPublOfAnaID":null,"ISBN":null,"Volume":"20","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42839,"SerRR":"Environmental Toxicology and Chemistry. 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