Photodegradation study for assessing the environmental fate of some triazine-, urea- and thiolcarbamate-type herbicides

Lányi, Katalin; Dinya, Zoltán

doi:10.1016/j.microc.2004.12.001

Cited by 37 publications

(23 citation statements)

References 8 publications

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“…Novelty: In contrast to other studies 20-hour-long UV-irradiation did not lead to the formation of cyanuric acid as the end-product. Under natural conditions this compound is not likely to be formed; it could only be obtained by TiO 2 /Na 2 S 2 O 8 catalyzed degradation (Lányi andDinya, 2005, Pérez et al 2006). In comparison with the results of previous studies it might be established that dechlorination, hydroxylation and scission of methyl-and ethyl groups are regarded as major steps of the photodegradation of atrazine.…”

Section: Photodegradation Of Atrazinementioning

confidence: 99%

“…Studies aiming at investigating the photolytic degradation of simazine so far have only pointed out the fact of degradation and the factors influencing it (Mansour et al 1993, Hequet et al, 2001, Bianchi et al, 2006. Previously efforts were made to propose a reaction pathway for the decomposition (Pelizzetti et al, 1990), and to detect the loss of side-chains and their substitution with OH-group (Lányi et al, 2005), however identification of all the major degradates ( …”

Section: Photodegradation Of Simazinementioning

confidence: 99%

“…Hydroxy, 2-H and 2-methoxy derivatives of the parent compound were identified. TiO 2 catalysed mineralization of atrazine was also studied along with other triazines (Konstantinou et al 2001;Parra et al 2004;Lányi and Dinya, 2005;Pérez et al 2006). Products formed by oxidation, ring opening, decarboxylation, isomerization, hydroxilation and cyclization were found to be the main degradates.…”

Section: Introductionmentioning

confidence: 99%

“…It was shown that some triazine herbicides undergo photodegradation to form deaminated derivatives (Mansour et al 1993). The photodegradation products of some commonly used N-containing herbicides were detected however entire mechanisms have not been revealed (Lányi and Dinya, 2005). High-pressure mercury vapour lamp (254 nm, 125 W) and GC/MS technique were used during the examinations.…”

Section: Introductionmentioning

confidence: 99%

“…Formation of several photoproducts and the cleavage of C-S and C-N bonds were observed but no reaction pathway was revealed. The kinetics of photodegradation of EPTC was studied by Dinya and Lányi (2005.). In summary it might be stated that huge efforts have been made to characterise both the chemical and environmental behaviour of pesticides, however the precise reaction mechanisms of photodegradation have not been revealed, and in some cases controversial results have been obtained.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Interpretation and Modelling of Environmental Behaviour of Diverse Pesticides by Revealing Photodecomposition Mechanisms

Kiss¹,

Virg²

2011

Pesticides - Formulations, Effects, Fate

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This book provides an overview on a large variety of pesticide-related topics, organized in three sections. The first part is dedicated to the "safer" pesticides derived from natural materials, the design and the optimization of pesticides formulations, and the techniques for pesticides application. The second part is intended to demonstrate the agricultural products, environmental and biota pesticides contamination and the impacts of the pesticides presence on the ecosystems. The third part presents current investigations of the naturally occurring pesticides degradation phenomena, the environmental effects of the break down products, and different approaches to pesticides residues treatment. Written by leading experts in their respective areas, the book is highly recommended to the professionals, interested in pesticides issues.

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Section: Photodegradation Of Atrazinementioning

confidence: 99%

Section: Photodegradation Of Simazinementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Interpretation and Modelling of Environmental Behaviour of Diverse Pesticides by Revealing Photodecomposition Mechanisms

Kiss¹,

Virg²

2011

Pesticides - Formulations, Effects, Fate

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Monitoring of Photocatalytic Degradation of Selected Neonicotinoid Insecticides by Cathodic Voltammetry with a Bismuth Film Electrode

et al. 2008

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An electroanalytical method has been developed for the determination of two water soluble pyridine based neonicotinoid insecticides (imidacloprid and acetamiprid) by differential pulse voltammetry with a bismuth film electrode in aqueous Britton -Robinson buffer solution as supporting electrolyte. The bismuth film electrode preparation was optimized for cathodic voltammetric application. The reduction peaks of the neonicotionids appeared at potentials more negative than À 0.5 V (BiFE vs. Ag/AgCl/3.0 M KCl) and the signal characteristics depended on the pH of the supporting electrolyte. The best analysis conditions were found to be pH 8.0 for imidacloprid and pH 3.0 for acetamiprid at the following measurement parameters: pulse amplitude 50 mV, pulse width 50 ms and scan rate 25 mV. Calibration curves were linear in the concentration range of 2.43 -51.1 mg/cm 3 for imidacloprid and 2.95 -47.3 mg/cm 3 for acetamiprid, while the detection limits were 0.73 mg/cm 3 and 0.88 mg/cm 3 for imidacloprid and acetamiprid, respectively. The electroanalytical method has allowed monitoring the heterogeneous photocatalytic (O 2 /TiO 2 /UV) degradation of the two insecticides via their disappearance. The dynamics and the reaction rate determined on the basis of the electrochemical data were validated with HPLC/DAD and FTIR measurements.

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Cycloate, an inhibitor of fatty acid elongase, modulates the metabolism of very‐long‐side‐chain alkylresorcinols in rye seedlings

Magnucka

Suzuki

Pietr

et al. 2009

Pest Management Science

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This study extends present understanding of the mode of action of thiocarbamate herbicides. Cycloate markedly affected the biosynthesis of very-long-side-chain resorcinolic lipids in rye seedlings, confirming the existence of parallels in both fatty acid and alkylresorcinol biosynthetic pathways. The observed cycloate-driven accumulation of 5-n-alkylresorcinols may improve the resistance of cereals to infections caused by microbial pathogens.

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Photodegradation study for assessing the environmental fate of some triazine-, urea- and thiolcarbamate-type herbicides

Cited by 37 publications

References 8 publications

Interpretation and Modelling of Environmental Behaviour of Diverse Pesticides by Revealing Photodecomposition Mechanisms

Interpretation and Modelling of Environmental Behaviour of Diverse Pesticides by Revealing Photodecomposition Mechanisms

Monitoring of Photocatalytic Degradation of Selected Neonicotinoid Insecticides by Cathodic Voltammetry with a Bismuth Film Electrode

Cycloate, an inhibitor of fatty acid elongase, modulates the metabolism of very‐long‐side‐chain alkylresorcinols in rye seedlings

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