{"refrec":{"BRefID":230946,"RR":"<b>Smedes, F.; van Vliet, L.A.; Booij, K.</b> (2013). Multi-Ratio Equilibrium Passive Sampling Method to Estimate Accessible and Pore Water Concentrations of Polycyclic Aromatic Hydrocarbons and Polychlorinated Biphenyls in Sediment. <i>Environ. Sci. Technol. 47(1)</i>: 510-517","BEntID":222658,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Environ. Sci. Technol. 47(1)</i>: 510-517. <a href=\"https://dx.doi.org/10.1021/es3040945\" target=\"_blank\">https://dx.doi.org/10.1021/es3040945</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Smedes, F.; van Vliet, L.A.; Booij, K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Smedes, F. <i>et al.</i>","Englishabstract":"The freely dissolved concentration (C-w,C-0) in the pore water and the accessible (releasable) concentration in the sediment (C-as,C-0) are important parameters for risk assessment. These parameters were determined by equilibrating contaminated sediments and passive samplers using largely differing sampler-sediment ratios. This method is based on the principle that incubations at low sampler/sediment ratios yield the concentration in the pore water (minor depletion of the sediment phase) and incubations at high sampler/sediment ratios yield the accessible concentration in the sediment (maximum depletion of the sediment phase). It is shown that equilibration was faster in dense suspensions and at high sampler/sediment ratios when compared to low sampler/sediment ratios. An equilibrium distribution model was used to estimate C-w,C-0 and C-as,C-0 by nonlinear least-squares regression. The method was evaluated three sediments (harbor, estuarine, marine). Accessible concentrations of 13 PAHs were 2 (low K-ow) to 10 (high K-ow) times lower than the total concentrations (three sediments). By contrast, the accessible concentrations of 15 PCBs were about 1.2 times lower than the total concentrations and displayed no trend with K-ow (one sediment). Implications for risk assessment and considerations for application of multi-ratio equilibrium passive sampling with other sediments are discussed.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Multi-Ratio Equilibrium Passive Sampling Method to Estimate Accessible and Pore Water Concentrations of Polycyclic Aromatic Hydrocarbons and Polychlorinated Biphenyls in Sediment","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2013,"MonPub":null,"DateUpdate":"2014-06-20","DateCreate":"2013-12-01","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000313220300065","VABBcode":null,"OpenAcc":0,"DOI":"10.1021/es3040945"},"refs":null,"anarec":{"AnaID":230946,"PubliDate":2013,"Pagination":"510-517","XtraPublOfAnaID":null,"ISBN":null,"Volume":"47","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42837,"SerRR":"Environmental Science and Technology. 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