Results 121 to 130 of about 2,159 (178)

Photolysis of Diuron

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, Valérie Faure, Pierre Boule   +2 more
openaire   +1 more source

Diuron sorption isotherms in freshwater biofilms

Science of The Total Environment, 2019
Biofilms 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, Morin, Soizic, Boutry, Sébastien, Mazzella, Nicolas   +3 more
openaire   +3 more sources

Behavioral Responses to Atrazine and Diuron in Goldfish

Archives of Environmental Contamination and Toxicology, 1998
Experiments 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.
openaire   +3 more sources

Titrimetric determination of diuron in herbicide formulations

The Analyst, 1969
Diuron 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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Degradation of diuron in aqueous solution by ozonation

Journal of Environmental Science and Health, Part B, 2008
Degradation of diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea] in aqueous solution and the proposed degradation mechanism of diuron by ozonation were investigated. The factors that affect the degradation efficiency of diuron were examined. The generated inorganic ions and organic acids during the ozonation process were detected.
Jingwei, Feng, Zheng, Zheng, Jingfei, Luan, Jibiao, Zhang, Lianhong, Wang   +4 more
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Aerobic degradation of diuron by aquatic microorganisms

Journal of Environmental Science and Health, Part B, 1982
Degradation 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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Toxicity of diuron in human cancer cells

Toxicology in Vitro, 2015
Diuron 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, Naarala Jonne Tapio, Vähäkangas Kirsi, Huovinen Marjo   +3 more
openaire   +2 more sources

Biotransformation and biomonitoring of phenylurea herbicide diuron

Bioresource Technology, 2011
A 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
openaire   +2 more sources

The metabolic effects of diuron in the rat liver

Environmental Toxicology and Pharmacology, 2017
A systematic study on the effects of diuron on the hepatic metabolism was conducted with emphasis on parameters linked to energy metabolism. The experimental system was the isolated perfused rat liver. The results demonstrate that diuron inhibited biosynthesis (gluconeogenesis) and ammonia detoxification, which are dependent of ATP generated within the
Mellina, da Silva Simões, Lívia, Bracht, Angela Valderrama, Parizotto, Jurandir Fernando, Comar, Rosane Marina, Peralta, Adelar, Bracht   +5 more
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Detoxication of the herbicide diuron byPseudomonas sp.

Folia Microbiologica, 2000
A 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, S M, Soltan, A M, Ali, K A, Ali   +3 more
openaire   +2 more sources