Partitioning of hydrophobic organic contaminants between polymer and lipids for two silicones and low density polyethylene

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F17%3A00095512" target="_blank" >RIV/00216224:14310/17:00095512 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0045653517312675?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0045653517312675?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.chemosphere.2017.08.044" target="_blank" >10.1016/j.chemosphere.2017.08.044</a>

Result language

angličtina

Original language name

Partitioning of hydrophobic organic contaminants between polymer and lipids for two silicones and low density polyethylene

Original language description

Polymers are increasingly used for passive sampling of neutral hydrophobic organic substances (HOC) in environmental media including water, air, soil, sediment and even biological tissue. The equilibrium concentration of HOC in the polymer can be measured and then converted into equilibrium concentrations in other (defined) media, which however requires appropriate polymer to media partition coefficients. We determined thus polymer-lipid partition coefficients (K-PL) of various PCB, PAH and organochlorine pesticides by equilibration of two silicones and low density polyethylene (LDPE) with fish oil and Triolein at 4 degrees C and 20 degrees C. We observed (i) that K-PL was largely independent of lipid type and temperature, (ii) that lipid diffusion rates in the polymers were higher compared to predictions based on their molecular volume, (iii) that silicones showed higher lipid diffusion and lower lipid sorption compared to LDPE and (iv) that absorbed lipid behaved like a co-solute and did not affect the partitioning of HOC at least for the smaller molecular size HOC. The obtained K-PL can convert measured equilibrium concentrations in passive sampling polymers into equilibrium concentrations in lipid, which then can be used (1) for environmental quality monitoring and assessment, (2) for thermodynamic exposure assessment and (3) for assessing the linkage between passive sampling and the traditionally measured lipid-normalized concentrations in biota. LDPE-lipid partition coefficients may also be of use for a thermodynamically sound risk assessment of HOC contained in microplastics.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/GA15-16512S" target="_blank" >GA15-16512S: Investigation of accumulation of persistent bioaccumulative toxic organic substances into aquatic organisms</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chemosphere

ISSN

0045-6535

e-ISSN

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Volume of the periodical

186

Issue of the periodical within the volume

November

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

948-957

UT code for WoS article

000411846900110

EID of the result in the Scopus database

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