Interactions of Long-Chain Perfluorotelomer Alcohol
and Perfluorinated Hydrocarbons with Model Decomposer Membranes
Version 2 2018-07-13, 17:59
Version 1 2018-07-13, 17:49
Posted on 2018-07-13 - 17:59
Perfluorinated
hydrocarbons and their polar derivatives are produced
annually in high quantities and find multiple industrial and technological
applications due to their chemical and physical durability, significant
hydro- and lipophobicity and excellent surface activity. Unfortunately,
multiple perfluorinated compounds are recognized as persistent organic
pollutants as they are completely nonbiodegradable and accumulate
in soils and sediments. In our studies, we applied Langmuir monolayers
formed by different structural phospholipids as models of soil bacteria
and fungi membranes and investigated the effects exerted by long-chain
perfluorinated pollutants, perfluorotelomer alcohol and two structurally
different perfluorinated hydrocarbons, on the artificial membranes.
Various mutually complemental methods such as surface pressuremean
molecular area isotherm registration, Brewster angle microscopy (BAM),
and grazing incidence X-ray diffraction (GIXD) were applied. It turned
out that the presence of the perfluorinated chemicals profoundly affected
the phospholipid monolayers. The miscibility of the phospholipid with
the perfluorotelomer alcohol depended strongly on the size and charge
of the polar headgroup. Additionally, it was observed by BAM that
the presence of the perfluorinated molecules significantly changed
the texture of all the investigated phospholipid monolayers. On the
basis of the BAM and GIXD results and other studies described in the
scientific literature, we postulated that the perfluorinated hydrocarbons
form an additional monolayer anchored on top of the phospholipid film.
Our studies prove that both polar and nonpolar perfluorinated pollutants
can be toxic to decomposer organisms and that their toxicity is strictly
correlated with the phospholipid composition of the cellular membrane.
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Wójcik, Aneta; Perczyk, Paulina; Wydro, Paweł; Flasiński, Michał; Broniatowski, Marcin (2018). Interactions of Long-Chain Perfluorotelomer Alcohol
and Perfluorinated Hydrocarbons with Model Decomposer Membranes. ACS Publications. Collection. https://doi.org/10.1021/acs.jpcb.8b05194
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AUTHORS (5)
AW
Aneta Wójcik
PP
Paulina Perczyk
PW
Paweł Wydro
MF
Michał Flasiński
MB
Marcin Broniatowski
KEYWORDS
Model Decomposer Membranes Perfluorinated hydrocarbonsperfluorinated hydrocarbons formperfluorotelomer alcoholnonpolar perfluorinated pollutantsmembranephospholipid monolayersLong-Chain Perfluorotelomer Alcoholincidence X-ray diffractionBrewster angle microscopyarea isotherm registrationBAMlong-chain perfluorinated pollutantsGIXD