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@ARTICLE{Wolters:40455,
author = {Wolters, A. and Klein, M. and Vereecken, H.},
title = {{A}n improved description of the pesticide volatilization
from soil: refinement of the {P}esticide {L}eaching {M}odel
({PELMO})},
journal = {Journal of environmental quality},
volume = {33},
issn = {0047-2425},
address = {Madison, Wis.},
publisher = {ASA [u.a.]},
reportid = {PreJuSER-40455},
pages = {1629 - 1637},
year = {2004},
note = {Record converted from VDB: 12.11.2012},
abstract = {The consideration of pesticide volatilization from soil
surfaces as an integral component of pesticide fate models
is of importance, especially as part of the Predicted
Environmental Concentrations (PEC) models used in the
registration procedures for pesticides. The Pesticide
Leaching Model (PELMO), which is used in the European
registration process, was modified to allow for a reliable
prediction of volatilization from soil. The previous PELMO
version was upgraded by improving the spatiotemporal
discretization at the soil surface, improving the empirical
description of temperature dependence of Henry's law
constants and including increased sorption of pesticides in
dry soils. Comparison of predictions with experimental
findings revealed the improvements of PELMO to contribute to
a more realistic reflection of measurements, particularly at
initial stages of the studies. The broad range of literature
values of Henry's law constants was shown to have a
significant effect on predicted volatilization fluxes. As a
main refinement, the tendency of pesticides toward enhanced
volatilization under moist conditions was correctly
calculated by the improved model. Variations between model
predictions and measurements were due to a lack of
experimental data on soil sorption under dry conditions and
indicated the need for further calibration of the model. The
description of water content in the top layer was subject to
uncertainty, which was exemplified by an overestimation of
soil moisture during the last days of the field study. Thus,
future model improvement will be dependent on experimental
support to obtain more detailed information on
soil-air-water partitioning of pesticides in the top soil
layer.},
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:000223987000004},
url = {https://juser.fz-juelich.de/record/40455},
}