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@article{1408755,
author = {Smedes, Foppe and Rusina, Tatsiana and Beeltje, Henry and Mayer, Philipp},
article_location = {OXFORD},
article_number = {November},
doi = {http://dx.doi.org/10.1016/j.chemosphere.2017.08.044},
keywords = {Passive sampling; Partition coefficient; Lipid; Diffusion coefficient; Microplastic},
language = {eng},
issn = {0045-6535},
journal = {Chemosphere},
title = {Partitioning of hydrophobic organic contaminants between polymer and lipids for two silicones and low density polyethylene},
url = {https://www.sciencedirect.com/science/article/pii/S0045653517312675?via%3Dihub},
volume = {186},
year = {2017}
}
TY - JOUR
ID - 1408755
AU - Smedes, Foppe - Rusina, Tatsiana - Beeltje, Henry - Mayer, Philipp
PY - 2017
TI - Partitioning of hydrophobic organic contaminants between polymer and lipids for two silicones and low density polyethylene
JF - Chemosphere
VL - 186
IS - November
SP - 948-957
EP - 948-957
PB - PERGAMON-ELSEVIER SCIENCE LTD
SN - 00456535
KW - Passive sampling
KW - Partition coefficient
KW - Lipid
KW - Diffusion coefficient
KW - Microplastic
UR - https://www.sciencedirect.com/science/article/pii/S0045653517312675?via%3Dihub
L2 - https://www.sciencedirect.com/science/article/pii/S0045653517312675?via%3Dihub
N2 - 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.
ER -
SMEDES, Foppe, Tatsiana RUSINA, Henry BEELTJE and Philipp MAYER. Partitioning of hydrophobic organic contaminants between polymer and lipids for two silicones and low density polyethylene. \textit{Chemosphere}. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD, 2017, vol.~186, November, p.~948-957. ISSN~0045-6535. Available from: https://dx.doi.org/10.1016/j.chemosphere.2017.08.044.
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