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@ARTICLE{Wolters:30355,
author = {Wolters, A. and Linnemann, V. and Herbst, M. and Klein, M.
and Schäffer, A. and Vereecken, H.},
title = {{P}esticide {V}olatilization from {S}oil: {F}ield-like
{M}easurements vs. {P}redictions of {E}uropean
{R}egistration {M}odels},
journal = {Journal of environmental quality},
volume = {32},
issn = {0047-2425},
address = {Madison, Wis.},
publisher = {ASA [u.a.]},
reportid = {PreJuSER-30355},
pages = {1183 - 1193},
year = {2003},
note = {Record converted from VDB: 12.11.2012},
abstract = {A comparison was drawn between model predictions and
experimentally determined volatilization rates to evaluate
the volatilization approaches of European registration
models. Volatilization rates of pesticides (C-14-labeled
parathion-methyl, fenpropimorph, and terbuthylazine and
nonlabeled chlorpyrifos) were determined in a wind-tunnel
experiment after simultaneous soil surface application on
Gleyic Cambisol. Both continuous air sampling, which
quantifies volatile losses of C-14-organic compounds and
(CO2)-C-14 separately, and the detection of soil residues
allow for a mass balance of radioactivity of the
C-14-labeled pesticides. Recoveries were found to be $>94\%$
of the applied radioactivity. The following descending order
of cumulative volatilization was observed: chlorpyrifos >
parathion-methyl > terbuthylazine > fenpropimorph. Due to
its high air-water partitioning coefficient, nonlabeled
chlorpyrifos was found to have the highest cumulative
volatilization $(44.4\%)$ over the course of the experiment.
Volatilization flux rates were measured up to 993 mug m(-2)
h(-1) during the first hours after application.
Parameterization of the Pesticide Emission Assessment at
Regional and Local Scales (PEARL) model and the Pesticide
Leaching Model (PELMO) was performed to mirror the
experimental boundary conditions. In general, model
predictions deviated markedly from measured volatilization
rates and showed limitations of current volatilization
models, such as the uppermost compartment thickness, making
an enormous influence on predicted volatilization losses.
Experimental findings revealed soil moisture to be an
important factor influencing volatilization from soil, yet
its influence was not reflected by the model calculations.
Future versions of PEARL and PELMO ought to include improved
descriptions of aerodynamic resistances and soil moisture
dependent soil-air partitioning coefficients.},
keywords = {J (WoSType)},
cin = {ICG-IV},
ddc = {333.7},
cid = {I:(DE-Juel1)VDB50},
pnm = {Chemie und Dynamik der Geo-Biosphäre},
pid = {G:(DE-Juel1)FUEK257},
shelfmark = {Environmental Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000184099800002},
url = {https://juser.fz-juelich.de/record/30355},
}