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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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-

Název v anglickém jazyce

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

Popis výsledku anglicky

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-

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DA - Hydrologie a limnologie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA14-03691S" target="_blank" >GA14-03691S: Izotermické a neizotermické proudění vody a transport látek v pórovitém prostředí v blízkosti nasycení</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Contaminant Hydrology

ISSN

0169-7722

e-ISSN

—

Svazek periodika

175-176

Číslo periodika v rámci svazku

APR-MAY

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

16

Strana od-do

1-16

Kód UT WoS článku

000353009900001

EID výsledku v databázi Scopus

2-s2.0-84923264398