Results 181 to 190 of about 25,941 (224)
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Photodegradation mechanism of deltamethrin and fenvalerate
Journal of Environmental Sciences, 2010To understand the degradation and environmental fate of pyrethroids, the process of their photodegradation under simulated natural conditions was investigated. The results showed that the degradation process follows first-order kinetics. The degradation intermediates were identified with gas chromatography-mass spectrometry.
Pengyan, Liu +3 more
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Deltamethrin: Uses and Environmental Safety
1992Deltamethrin is a photostable pyrethroid providing valuable insecticidal activity against a large number of pests. Since it has potential uses for crop, cattle, and human health protection, extensive research work was done to evaluate its safety. Protection against insect pests in agriculture requires safety not only for applicators, but also for honey
R, Mestres, G, Mestres
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Deltamethrin residues on Saskatoon berries
Journal of Agricultural and Food Chemistry, 1993Following four applications of deltamethrin [(S)-α-cyano-3- phenoxybenzyl (1R,3R)-cis-2,2-dimethyl-3-(2,2-dibromovinyl)cyclopropanecarboxylate], saskatoon berries were manually collected 1, 7, 14, 21, 28, and 39 days after the last application. Berries were stored frozen in foil-lined bags pending analysis.
Neil D. Westcott, Randy A. Reichle
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Locust control with deltamethrin
1997The brown locust, Locusiana pardalina (Walker), is a chronic pest problem and a potential threat to the food security of some nine countries in southern Africa (Lea 1964). Intervention relies mainly on nymphal band control in the Karoo outbreak region of this locust species and involves the detection and direct spraying of bands with ground-based ultra
H. D. Brown, M. E. Kieser
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Deltamethrin Impairs Honeybees (Apis mellifera) Dancing Communication
Archives of Environmental Contamination and Toxicology, 2019As a commonly used pyrethroid insecticide, deltamethrin is very toxic to honeybees, which seriously threatens the managed and feral honeybee population. Because deltamethrin is a nerve agent, it may interfere with the nervous system of honeybees, such as dance behavior and memory-related characteristics.
Zu Yun, Zhang +7 more
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Excretion of deltamethrin in lactating dairy cows
Food Additives and Contaminants, 1990A study was conducted to determine the metabolic fate of deltamethrin in lactating cows after a 'pour-on' application. Two cows were treated with 0.1 g deltamethrin and two with 1 g of the compound. Urine, faeces, milk and blood were collected over an 8-day period and analyzed for deltamethrin. This preliminary experiment has shown that it is necessary
A, Venant +3 more
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Deltamethrin: The Cream of the Crop
Journal of Agricultural and Food Chemistry, 2010Replacement of the pyrethronyl alcohol portion of the natural pyrethrins with the 5-benzyl-3-furylmethyl moiety gave bioresmethrin, a synthetic pyrethroid of high potency and safety but with limited photostability. Introduction of novel substituents at the 3-position of the cyclopropane ring then led to the discovery of insecticidally active compounds ...
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Fatal intoxication with hydrocarbons in deltamethrin preparation
Human & Experimental Toxicology, 2009Pyrethroid insecticides are very widely used in agriculture and household due to high effectiveness and low toxicity to humans. We have described a case of a fatal oral intoxication with decis, the insecticide containing pyrethroid (deltamethrin) in a hydrocarbon base.
Jan, Magdalan +2 more
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Biological monitoring of deltamethrin exposure in greenhouses
International Archives of Occupational and Environmental Health, 1996This study examined the possibility of using biological monitoring to assess deltamethrin exposure among greenhouse workers. The synthetic pyrethroid deltamethrin was sprayed in five greenhouses by cold for generators, and the exposure was biologically monitored by analysing the concentration of its metabolite, 3-phenoxybenzoic acid, by a gas chromato ...
A, Tuomainen +3 more
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Toxicological studies of deltamethrin.
International journal of tissue reactions, 1984Deltamethrin [( S]-alpha-cyano-3-phenoxybenzyl-cis-(1R,3R)-3-(2,2-dibromovinyl+ ++) (2,2-dimethyl-cyclopropane-carboxylate], is the most potent insecticide known at the present time. But it is also one of the most toxic pyrethroids for vertebrates.
H C, Pham +5 more
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