Transport of bromide and pesticides through an undisturbed soil column: A modeling study with global optimization analysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00226119" target="_blank" >RIV/68407700:21110/15:00226119 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jconhyd.2015.02.002" target="_blank" >http://dx.doi.org/10.1016/j.jconhyd.2015.02.002</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jconhyd.2015.02.002" target="_blank" >10.1016/j.jconhyd.2015.02.002</a>

Result language
angličtina
Original language name
Transport of bromide and pesticides through an undisturbed soil column: A modeling study with global optimization analysis
Original language description
The fate of pesticides in tropical soils is still not understood as well as it is for soils in temperate regions. In this study, water flow and transport of bromide tracer and five pesticides (atrazine, imazaquin, sulfometuron methyl, S-metolachlor, andimidacloprid) through an undisturbed soil column of tropical Oxisol were analyzed using a one-dimensional numerical model. The numerical model is based on Richards' equation for solving water flow, and the advection?dispersion equation for solving solutetransport. Data from a laboratory column leaching experiment were used in the uncertainty analysis using a global optimization methodology to evaluate the model's sensitivity to transport parameters. All pesticides were found to be relatively mobile (sorption distribution coefficients lower than 2 cm3 g-1). Experimental data indicated significant non-conservative behavior of bromide tracer. All pesticides, with the exception of imidacloprid, were found less persistent (degradation half-
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DA - Hydrology and limnology
OECD FORD branch
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Project
<a href="/en/project/GA14-03691S" target="_blank" >GA14-03691S: Isothermal and non-isothermal water flow and solute transport in near-saturated porous media</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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