ChemInform Abstract: COPPER(II) BINDING BY SUBSTITUTED 1,3,5‐TRIAZINE HERBICIDES

Decock, Patrick; Dubois, Bernard; Lerivrey, J.; Gessa, C.; Urbańska, Jadwiga; Kozłowski, Henryk

doi:10.1002/chin.198536079

Cited by 4 publications

(5 citation statements)

References 1 publication

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“…Displacement of the loosely bound water from the hydrophobic micropore space was believed to be the major mechanism of atrazine sorption on microporous minerals (Cheng and Reinhard, 2007;Hu et al, 2012;Hu and Cheng, 2013a). Due to the presence of heteroatom (N) with free electron pairs and aromatic ring with delocalized p electrons, atrazine molecules have relatively strong interactions with transition metals, such as copper, and form the corresponding complexes (Decock et al, 1985;Grabec et al, 1994). As a result, atrazine could adsorb more strongly on Cu/CBV-720 than on CBV-720.…”

Section: Sites Of Transition Metals In Zeolite Microporesmentioning

confidence: 99%

Catalytic effect of transition metals on microwave-induced degradation of atrazine in mineral micropores

Cheng

2014

Water Research

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Section: Sites Of Transition Metals In Zeolite Microporesmentioning

confidence: 99%

Catalytic effect of transition metals on microwave-induced degradation of atrazine in mineral micropores

Cheng

2014

Water Research

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“…Previous studies on interaction of metal ions with pesticides having metal binding sites have shown stable complexed species can be formed, and they may have relevance to metal ion distribution in soil (Decock et al, 1985;Lerivrey et al, 1986;Pusino et al, 1988). Metal ions forming neutral complexed species may be desorbed from clays and replaced by protons or protonated molecules as the saturating cations (Micera et al, 1988;Pusino et al, 1989).…”

Section: Introductionmentioning

confidence: 99%

Effect of metal-binding ability on the adsorption of acifluorfen on soil

Pusino¹,

Liu²,

Fang³

et al. 1993

J. Agric. Food Chem.

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The adsorption of acifluorfen, the sodium salt of 5-[2-chloro-4-(trifluoromethyI)phenoxy]-2-nitrobenzoic acid, on six soils of various physical and chemical properties as well as its dependence on the exchangeable cation (Ca2+ and Na+) and on soil pH was studied. Adsorption isotherms conformed to the Freundlich equation. Soil saturation by Na+ ions produced a strong decrease in acifluorfen adsorption, whereas the opposite finding was observed for Ca-saturated soils. Adsorption was found to be correlated with cation-exchange capacity (CEC) much better than with other soil properties and decreased with increasing pH. At comparable pH, variations of k¡ values after Ca saturation of soils indicated that complex formation reactions, leading to precipitation of insoluble complexes, contribute to simulate high adsorption.

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“…The degradation of atrazine for all treatments discussed previously is rapid (60 min); this may be related to the affinity of atrazine for the mineral surfaces 68 at circumneutral pH, followed by its degradation in the presence of H 2 O 2 . The rate of atrazine degradation (20 mg L −1 ) was examined over time (10–70 min at intervals of 10 min).…”

Section: Resultsmentioning

confidence: 90%

“…This was verified by an elution study, as mentioned in the UV spectrophotometric analysis section. For modified MK10 and sand, atrazine molecules can interact relatively strongly with copper, due to the presence of heteroatoms (N) with free electron pairs and aromatic rings with delocalized π electrons 68 . The unmodified MK10 shows only adsorption in the presence and absence of H 2 O 2 .…”

Section: Resultsmentioning

confidence: 99%

Atrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand

Kalidhasan

Dror

Berkowitz

2017

Sci Rep

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We present the synthesis of new composite materials based on copper nanoparticles (Cu NPs) deposited onto montmorillonite (MK10) and quartz sand, for degradation of atrazine, in the context of an advanced oxidation process (AOP). The synthesis involves a first step in which polyethylenimine (PEI) capped Cu NPs (PEI_Cu NPs) are prepared, and then deposited onto, separately, MK10 and sand, through a solvent impregnation method. The resulting products are characterized in detail; the copper is found to exist as a mixture of copper (I, II) oxide. The degradation of atrazine follows a second-order kinetic model with constant values of K2 = 1.7957 g mg−1 min−1 for MK10_PEI_Cu NPs and K2 = 0.8133 g mg−1 min−1 for sand_PEI_Cu NPs. The reaction rate is linked to Cu2O and CuO redox-active species within the layers, pores and surface of the host materials. A degradation mechanism is found with application of these composite materials in the presence of H2O2; adsorption occurs in the absence of H2O2. In contrast, the unmodified MK10 and sand exhibit adsorption in both of the above reaction conditions. Finally, the stability of the Cu NPs following degradation is evaluated, and no significant amount of copper leaching is found.

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ChemInform Abstract: COPPER(II) BINDING BY SUBSTITUTED 1,3,5‐TRIAZINE HERBICIDES

Abstract: Mittels potentiometrischer Messungen werden die Stabilitätskonstanten der Cu‐Komplexe mit den Triazinherbiziden (I) bestimmt.

Cited by 4 publications

References 1 publication

Catalytic effect of transition metals on microwave-induced degradation of atrazine in mineral micropores

Catalytic effect of transition metals on microwave-induced degradation of atrazine in mineral micropores

Effect of metal-binding ability on the adsorption of acifluorfen on soil

Atrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand

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