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Ex situ determination of freely dissolved concentrations of hydrophobic organic chemicals in sediments and soils: basis for interpreting toxicity and assessing bioavailability, risks and remediation necessity

MTO. Jonker, RM. Burgess, U. Ghosh, PM. Gschwend, SE. Hale, R. Lohmann, MJ. Lydy, KA. Maruya, D. Reible, F. Smedes,

. 2020 ; 15 (5) : 1800-1828. [pub] 20200420

Jazyk angličtina Země Velká Británie

Typ dokumentu hodnotící studie, časopisecké články, práce podpořená grantem, Research Support, U.S. Gov't, Non-P.H.S.

Perzistentní odkaz   https://www.medvik.cz/link/bmc20025057

Grantová podpora
EPA999999 Intramural EPA - United States

E-zdroje Online Plný text

NLK ProQuest Central od 2006-06-01 do Před 1 rokem
Health & Medicine (ProQuest) od 2006-06-01 do Před 1 rokem

Odkazy

PubMed 32313252
DOI 10.1038/s41596-020-0311-y
Knihovny.cz E-zdroje

The freely dissolved concentration (Cfree) of hydrophobic organic chemicals in sediments and soils is considered the driver behind chemical bioavailability and, ultimately, toxic effects in benthic organisms. Therefore, quantifying Cfree, although challenging, is critical when assessing risks of contamination in field and spiked sediments and soils (e.g., when judging remediation necessity or interpreting results of toxicity assays performed for chemical safety assessments). Here, we provide a state-of-the-art passive sampling protocol for determining Cfree in sediment and soil samples. It represents an international consensus procedure, developed during a recent interlaboratory comparison study. The protocol describes the selection and preconditioning of the passive sampling polymer, critical incubation system component dimensions, equilibration and equilibrium condition confirmation, quantitative sampler extraction, quality assurance/control issues and final calculations of Cfree. The full procedure requires several weeks (depending on the sampler used) because of prolonged equilibration times. However, hands-on time, excluding chemical analysis, is approximately 3 d for a set of about 15 replicated samples.

Citace poskytuje Crossref.org

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