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@ARTICLE{BamannSchnitzler:45862,
author = {Baßmann-Schnitzler, F. and Séquaris, J.-M.},
title = {{S}orption properties of hydrophobically modified
poly(acrylic acids) as natural organic matter model
substances to pyrene},
journal = {Colloids and surfaces / A},
volume = {260},
issn = {0927-7757},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-45862},
pages = {119 - 128},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {Amphiphilic natural organic matter (NOM) in soil, water and
sediments plays an important role in the fate of low-soluble
hydrophobic organic compounds (HOC) in the environment.
Scaling NOM structural factors, which affect the transport
and immobilization of HOC, is rather involved due to the
complexity of the NOM materials. Sorption properties of
hydrophobically modified polyacrylic (HMPA) polymers as NOM
model substances for pyrene were investigated and discussed
with regard to reported NOM results. Emission fluorescence
spectroscopic properties of pyrene and potentiometric
titrations were used to characterize the hydrophobic and
acidic properties of HMPA samples. Excitation fluorescence
spectroscopy allowed a speciation of pyrene molecules.
Overall complexation constants, beta(1) and beta(2) of
pyrene with hydrophobic moieties (-C8H17) and (-C16H33) were
calculated depending on the pH and electrolyte cation nature
at an ionic strength of 10 mM, typical of soil solution
conditions. Aggregation of HMPA molecules was detected by
photon correlation spectroscopy. Normalized sorption
constant K-oc values for pyrene with HMPA samples similar to
reported values with NOM support recent observations on the
contribution of aliphatic moieties to the binding of
polyaromatic hydrocarbons (PAH). The HMPA samples also model
the partitioning behavior of hydrophobic micelle-like
structures of NOM. (c) 2005 Elsevier B.V. All rights
reserved.},
keywords = {J (WoSType)},
cin = {ICG-IV},
ddc = {540},
cid = {I:(DE-Juel1)VDB50},
pnm = {Chemie und Dynamik der Geo-Biosphäre},
pid = {G:(DE-Juel1)FUEK257},
shelfmark = {Chemistry, Physical},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000230714500015},
doi = {10.1016/j.colsurfa.2005.04.001},
url = {https://juser.fz-juelich.de/record/45862},
}