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@ARTICLE{Klauth:51203,
author = {Klauth, P. and Bauer, R. and Ralfs, C. and Ustohal, P. and
Vanderborght, J. and Vereecken, H. and Klumpp, E.},
title = {{F}luorescence macrophotography as a tool to visualise and
quantify spatial distribution of deposited colloid tracers
in porous media},
journal = {Colloids and surfaces / A},
volume = {306},
issn = {0927-7757},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-51203},
pages = {118 - 125},
year = {2007},
note = {Record converted from VDB: 12.11.2012},
abstract = {Fluorescence macrophotography was used for the evaluation
of colloidal transport and deposition in silica sand and
sandy soil packed columns. With the fluorescence
macrophotography technique, the number of microspheres and
its macroscopic distribution on a column cross section is
derived from an image of the fluorescence intensity of the
surface. Column experiments with varying flow velocity and
input concentration of microspheres lead to conditions with
high deposition or high breakthrough of the colloids. In
comparison with established microscopic fluorescent
techniques the presented novel methodology was found to
deliver similar estimates of particle concentrations and
similar detection limits. Moreover, unlike with fluorescent
microscopic method, the fluorescent macrophotography
technique provides valuable information about the spatial
distribution of microspheres. The Sulforhodamine-B, a
frequently applied organic dye to label the microspheres,
limits the applicability of fluorescence macrophotography
technique due to self-quenching effects which occur at high
particle concentration. At high proximity of the fluorescent
microspheres self-quenching effects led to underestimation
of microsphere concentration as well as incorrect depth
profiles. Very recent developed microspheres, labelled with
rare-earth-ion-chelate-complexes overcome this limitation.
(C) 2007 Elsevier B.V.. All rights reserved.},
keywords = {J (WoSType)},
cin = {ICG-1 / ICG-4 / JARA-ENERGY / JARA-SIM},
ddc = {540},
cid = {I:(DE-Juel1)VDB790 / I:(DE-Juel1)VDB793 /
$I:(DE-82)080011_20140620$ / I:(DE-Juel1)VDB1045},
pnm = {Atmosphäre und Klima},
pid = {G:(DE-Juel1)FUEK406},
shelfmark = {Chemistry, Physical},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000249231200016},
doi = {10.1016/j.colsurfa.2007.03.058},
url = {https://juser.fz-juelich.de/record/51203},
}