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Analysis and DNA interaction of the profluralin herbicide
Authors: Morawska Kamila | Jedlinska Katarzyna | Smarzewska Sylwia | Metelka Radovan | Ciesielski Witold | Guziejewski Dariusz
Year: 2019
Type of publication: článek v odborném periodiku
Name of source: Environmental Chemistry Letters
Publisher name: Springer
Place: Heidelberg
Page from-to: 1359-1365
Titles:
Language Name Abstract Keywords
cze Analýza herbicidu profluralin a jeho interakce s DNA Byla vyvinuta analytická metoda pro stanovení herbicidu profluralin cyklickou voltametrií, square wave voltametrií a adsorptivní square wave voltametrií v půdách a vodě. Byla také studována interakce mezi profluralinem a dvojřetězcovou DNA. Výsledky studie pomocí cyklické voltametrie ukazují, že redukce nitro skupin profluralinu má irreverzibilní charakter a je řízena adsorpcí. Adsorptivní square wave voltametrií byl zjištěn lineární rozsah stanovení od 60 nmol l-1 do 800 nmol l-1 a detekční limit 17 nmol l-1. Bylo zjištěno, že profluralin spontánně vytváří komplexy s dvouřetězcovou DNA z lososího sperma elektrostatickou vazbou. Profluralin; Cetylmethylammonium bromid; Dvojřetězcová DNA; Adsorptivní square wave voltametrie; Herbicid
eng Analysis and DNA interaction of the profluralin herbicide The increasing use of pesticides is a major health issue. There is therefore a need for improved analytical methods and more knowledge on the interaction of pesticides with living organisms. Here, we developed the analysis of profluralin in water and soils by cyclic voltammetry, square-wave voltammetry and square-wave adsorptive stripping voltammetry. We also studied the interaction between profluralin and double-stranded DNA. Results of cyclic voltammetric studies indicate that the reduction processes have an irreversible and adsorption-like character, as a possible consequence of the reduction of nitro groups of profluralin. Quantification was found linear from 60 to 800 nmol L-1 with a detection limit of 17 nmol L-1 using square-wave adsorptive stripping voltammetry. Results of interactions with double-stranded DNA from salmon sperm revealed that profluralin forms a complex with DNA by electrostatic binding. Values of Gibbs free energy confirmed that formation of profluralin-DNA complex is spontaneous and favourable. Profluralin; Cetyltrimethylammonium bromide; Double-stranded DNA; Square-wave adsorptive stripping voltammetry; Herbicide

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