Results 171 to 180 of about 16,614 (224)
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Diuron sorption isotherms in freshwater biofilms
Science of The Total Environment, 2019Biofilms are excellent bioindicators for water quality assessment because of their ability to integrate contamination, and their position at the base of the trophic chain in aquatic environments. Pesticides are ubiquitous in aquatic environments and can constantly interact with aquatic organisms, including those that make up biofilms, at fluctuating ...
Chaumet, Betty +3 more
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Pesticide Science, 1997
The major photoproducts observed in the photolysis of diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea] (2) in aqueous solution resulted from a heterolytic substitution of chlorine by OH (photohydrolysis). A wavelength effect was observed: at 254 nm the formation of 3-(4-chloro-3-hydroxyphenyl)-1,1-dimethylurea (3) accounted for more than 90% of the ...
Jaromír Jirkovský +2 more
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The major photoproducts observed in the photolysis of diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea] (2) in aqueous solution resulted from a heterolytic substitution of chlorine by OH (photohydrolysis). A wavelength effect was observed: at 254 nm the formation of 3-(4-chloro-3-hydroxyphenyl)-1,1-dimethylurea (3) accounted for more than 90% of the ...
Jaromír Jirkovský +2 more
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Toxicologie Analytique et Clinique, 2018
Objectif Presentation d’un cas d’intoxication mortelle au Diuron. Description Un homme d’une soixantaine d’annees est retrouve inconscient dans sa voiture a cote d’une ferme. Il est transporte rapidement a l’hopital. Selon le dossier medical du patient, il n’y a pas d’antecedents medicaux connus hormis une consommation excessive d’alcool.
C. Widmer, E. Descloux, M. Augsburger
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Objectif Presentation d’un cas d’intoxication mortelle au Diuron. Description Un homme d’une soixantaine d’annees est retrouve inconscient dans sa voiture a cote d’une ferme. Il est transporte rapidement a l’hopital. Selon le dossier medical du patient, il n’y a pas d’antecedents medicaux connus hormis une consommation excessive d’alcool.
C. Widmer, E. Descloux, M. Augsburger
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Titrimetric determination of diuron in herbicide formulations
The Analyst, 1969Diuron is extracted with chloroform from a dispersion of the sample in 4 N hydrochloric acid and, after evaporation of the solvent, is hydrolysed in boiling 24 N sulphuric acid. The liberated dimethylamine is distilled into 2 per cent. boric acid and titrated with 0·05 N hydrochloric acid with methylene blue-methyl red as indicator.
S H, Yuen, B, Milosevic
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Toxicity of diuron in human cancer cells
Toxicology in Vitro, 2015Diuron is a substituted phenylurea used as a herbicide to control broadleaf and grass weeds and as a biocidal antifouling agent. Diuron is carcinogenic in rat urinary bladder and toxic to the reproductive system of oysters, sea urchins and lizards. The few studies carried out in human cells do not include the genotoxicity of diuron.
Loikkanen Jarkko +3 more
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Kinetics of the chemical degradation of diuron
Chemosphere, 2002The influence of pH and buffer concentration on the chemical degradation of diuron in water has been analysed over a wide temperature range. The process irreversibly gives 3,4-dichloroaniline as the only product containing the phenyl ring. H+, OH- and phosphate buffer are efficient catalysts of the reaction. The rate constant first increases rapidly at
SALVESTRINI, Stefano +2 more
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Aerobic degradation of diuron by aquatic microorganisms
Journal of Environmental Science and Health, Part B, 1982Degradation of diuron [3-(3,4-dichlorophenyl)-1,1-dimethyl-urea] by microorganisms obtained from pond water and sediment was determined under aerobic conditions. Enrichment procedures were used to isolate cultures capable of degrading the herbicide. Several mixed fungal/bacterial and mixed bacterial cultures were isolated that could degrade diuron. The
P A, Ellis, N D, Camper
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Biotransformation and biomonitoring of phenylurea herbicide diuron
Bioresource Technology, 2011A Gram-positive, Micrococcus sp. strain PS-1 isolated from diuron storage site was studied for its capability of biotransformation of phenylurea herbicide diuron to a secondary metabolite, 1-(3,4-dichlorophenyl)urea (DCPU) for bioconjugation and antibody development applications.
Priyanka, Sharma, C Raman, Suri
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Detoxication of the herbicide diuron byPseudomonas sp.
Folia Microbiologica, 2000A strain of bacteria able to detoxicate the herbicide diuron in pure culture was isolated from sites contaminated with different urea herbicides. Diuron was used as a sole source of carbon and energy by this isolate which is a Gram-negative, aerobic, rod-shaped bacterium with a single polar flagellum, and grows at 40 degrees C.
B A, el-Deeb +3 more
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Behavioral Responses to Atrazine and Diuron in Goldfish
Archives of Environmental Contamination and Toxicology, 1998Experiments were performed in goldfish to determine the effects of a short-term exposure (24 h) to atrazine or diuron (0.5, 5, 50 microgram/L) on some behavior endpoints related to swimming and social activities. Observations were also made to assess the influence of such exposure on the behavioral responses of fish to the flow of a crude skin extract ...
Saglio, Philippe, Trijasse, S.
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