2018
Concentration/time-dependent dissipation, partitioning and plant accumulation of hazardous current-used pesticides and 2-hydroxyatrazine in sand and soil
NEUWIRTHOVÁ, Natália, Zuzana BÍLKOVÁ, Jana VAŠÍČKOVÁ, Jakub HOFMAN, Lucie BIELSKÁ et. al.Základní údaje
Originální název
Concentration/time-dependent dissipation, partitioning and plant accumulation of hazardous current-used pesticides and 2-hydroxyatrazine in sand and soil
Autoři
NEUWIRTHOVÁ, Natália (703 Slovensko, domácí), Zuzana BÍLKOVÁ (203 Česká republika, domácí), Jana VAŠÍČKOVÁ (203 Česká republika, domácí), Jakub HOFMAN (203 Česká republika, domácí) a Lucie BIELSKÁ (203 Česká republika, garant, domácí)
Vydání
Chemosphere, OXFORD, PERGAMON-ELSEVIER SCIENCE LTD, 2018, 0045-6535
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.108
Kód RIV
RIV/00216224:14310/18:00101613
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000432235000026
Klíčová slova anglicky
Current-used pesticides; 2-Hydroxyatrazine; Soil; Degradation; Plant uptake; Solid-phase microextraction
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 19. 1. 2019 21:35, Mgr. Michaela Hylsová, Ph.D.
Anotace
V originále
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.
Návaznosti
CZ.02.1.01/0.0/0.0/16_013/0001761, interní kód MU |
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GA15-20065S, projekt VaV |
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LM2015051, projekt VaV |
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