Photochemical behaviour of carbendazim in aqueous solution

Boudina, A.; Emmelin, Corinne; Baâliouamer, Aoumeur; Grenier‐Loustalot, Marie‐Florence; Chovelon, J. M.

doi:10.1016/s0045-6535(02)00620-3

Cited by 80 publications

(36 citation statements)

References 14 publications

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“…In neutral solutions the absorption and fluorescence maxima of benzimidazole and its two derivatives occurs in the UV range between 280 and 350 nm (Boudina A., et al, ;Yousef Y.A, et al, 2001). The main objectives of the project are: 1.…”

Section: H-benzimidazole 2(-4-thiazolyl)mentioning

confidence: 99%

Photolysis of Some Benzimidazole Based Pesticides

Yousef¹,

Akasheh²

2011

Pesticides in the Modern World - Trends in Pesticides Analysis

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Section: H-benzimidazole 2(-4-thiazolyl)mentioning

confidence: 99%

Photolysis of Some Benzimidazole Based Pesticides

Yousef¹,

Akasheh²

2011

Pesticides in the Modern World - Trends in Pesticides Analysis

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“…The fungicide may additionally be found as a potential pollutant of water where it can accumulate, which justifies the great interest to study its presence in natural water. In consequence, it will be interesting to assay the 2-aminobenzimidazole (2-AB) which is a photoproduct of MBC in water [7]. The 2-AB molecule is also a substructure of chemosensor receptors used for selective recognition of anions with an important role in a variety of biological activities [8].…”

Section: Introductionmentioning

confidence: 99%

Spectrofluorimetric Analysis of the Fungicide Carbendazim and Its Metabolite 2-Aminobenzimidazole in Natural Water

Thiaré¹,

Khonté²,

Diop³

et al. 2015

AJAC

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A spectrofluorimetric method for the direct analysis of carbendazim [methyl 2-benzimidazole carbamate (MBC)] fungicide and its metabolite 2-aminobenzimidazole (2-AB) in natural waters is described. Very low limit of detection (LOD) and limit of quantification (LOQ) values of 0.002 -0.06 ng/mL and 0.006 -0.2 ng/mL, respectively, were determined by spectrofluorimetric method with small relative standard deviation (RSD) values < 1%. This spectrofluorimetric method was applied to the determination of MBC and 2-AB residues in natural waters, with satisfactory recovery values of (88.5% -119.2%).

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“…40,41 The reaction of 1 with photogenerated hydroxyl radicals affords mainly photoproducts hydroxylated in the benzene ring. 39 As regards the photophysical characterization of 1, the emission spectrum has been registered, and the energies of the first singlet (S1) and triplet (T1) excited states have been determined as 99.7 and 79.7 kcal mol -1 respectively.…”

Section: Introductionmentioning

confidence: 99%

Photodegradation of carbendazim sensitized by aromatic ketones

Jornet

Castillo

Sabater

et al. 2013

Journal of Photochemistry and Photobiology A: Chemistry

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it was assigned to the triplet excited state ( 3 1*) on the basis of energy transfer to oxygen and β-carotene. The photodegradation of 1 was achieved using XA and AQ as electron acceptors in a solar-simulator, in aerated aqueous medium; the reaction was faster with XA. Formation of a new photoproduct was initially observed; its structure was assigned as carbendazim N-C5 dimer (2). A balance of the total organic carbon (TOC) after prolonged irradiation indicated that mineralization does not occur to a significant extent, pointing to oxidative fragmentation of 1 and 2 to give a variety of low molecular weight products. To check whether the observed photodegradation of 1 results in a decreased toxicity, biological assays were performed using an established model based on the inhibition of mobility of Daphnia magna. The results demonstrate that photodegradation leads to in a diminished toxicity, indicating that the photoproducts are less toxic than the parent compound.

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Photochemical behaviour of carbendazim in aqueous solution

Cited by 80 publications

References 14 publications

Photolysis of Some Benzimidazole Based Pesticides

Photolysis of Some Benzimidazole Based Pesticides

Spectrofluorimetric Analysis of the Fungicide Carbendazim and Its Metabolite 2-Aminobenzimidazole in Natural Water

Photodegradation of carbendazim sensitized by aromatic ketones

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