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@article{1488445,
author = {Neuwirthová, Natália and Bílková, Zuzana and Vašíčková, Jana and Hofman, Jakub and Bielská, Lucie},
article_location = {OXFORD},
article_number = {July},
doi = {http://dx.doi.org/10.1016/j.chemosphere.2018.03.177},
keywords = {Current-used pesticides; 2-Hydroxyatrazine; Soil; Degradation; Plant uptake; Solid-phase microextraction},
language = {eng},
issn = {0045-6535},
journal = {Chemosphere},
title = {Concentration/time-dependent dissipation, partitioning and plant accumulation of hazardous current-used pesticides and 2-hydroxyatrazine in sand and soil},
url = {https://www.sciencedirect.com/science/article/pii/S0045653518306040?via%3Dihub},
volume = {203},
year = {2018}
}
TY - JOUR
ID - 1488445
AU - Neuwirthová, Natália - Bílková, Zuzana - Vašíčková, Jana - Hofman, Jakub - Bielská, Lucie
PY - 2018
TI - Concentration/time-dependent dissipation, partitioning and plant accumulation of hazardous current-used pesticides and 2-hydroxyatrazine in sand and soil
JF - Chemosphere
VL - 203
IS - July
SP - 219-227
EP - 219-227
PB - PERGAMON-ELSEVIER SCIENCE LTD
SN - 00456535
KW - Current-used pesticides
KW - 2-Hydroxyatrazine
KW - Soil
KW - Degradation
KW - Plant uptake
KW - Solid-phase microextraction
UR - https://www.sciencedirect.com/science/article/pii/S0045653518306040?via%3Dihub
L2 - https://www.sciencedirect.com/science/article/pii/S0045653518306040?via%3Dihub
N2 - The dissipation, partitioning dynamics and biouptake was measured for selected hazardous current-used pesticides (conazole fungicides: epoxiconazole, flusilazole, tebuconazole; prochloraz, chlorpyrifos, pendimethalin) and for a transformation product (2-hydroxyatrazine) in agricultural soil and quartz sand as representatives of a real and a worst-case scenario. Dissipation, uptake to Lactuca sativa and the freely dissolved concentration along with the organic carbon-normalized sorption coefficients (K-oc) were determined on days 12, 40, and 90 following the application of compounds at three fortification levels (0.1-1.0-10 mg/kg). Conazole fungicides showed similar dissipation patterns and were more persistent in soil than prochloraz, chlorpyrifos and pendimethalin. 2-Hydroxyatrazine showed a concentration-depended decrease in persistency in soil. Lettuce roots were shown to accumulate higher amounts than shoots where the extent of root uptake was driven by compound partitioning. This was evidenced by the ability of freely dissolved concentration (C-free) to reliably (r(2) = 0.94) predict root uptake. Concentration in leaves did not exceed the maximum residue levels (MRLs) for lettuce, which was likely given by the low root-to-shoot translocation factors (TFs) of the tested compounds varying between 0.007 and 0.14. K-oc values were in the range of literature values. Sorption to soil was higher than to sand for all compounds, yet following the K-oc dynamics compounds did not appear to be sequestered in soil with increasing residence time. From these results, it follows that the tested compounds may persist in soil but since they did not accumulate in lettuce above MRLs, contamination of the food web is unlikely.
ER -
NEUWIRTHOVÁ, Natália, Zuzana BÍLKOVÁ, Jana VAŠÍČKOVÁ, Jakub HOFMAN and Lucie BIELSKÁ. Concentration/time-dependent dissipation, partitioning and plant accumulation of hazardous current-used pesticides and 2-hydroxyatrazine in sand and soil. \textit{Chemosphere}. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD, 2018, vol.~203, July, p.~219-227. ISSN~0045-6535. Available from: https://dx.doi.org/10.1016/j.chemosphere.2018.03.177.
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