Search results for "diquat"
showing 6 items of 6 documents
On the question of extracorporeal hemodialysis in diquat intoxication.
1975
Extracorporeal hemodialyses were carried out in a female patient with severe diquat intoxication. Diquat clearance was on average, 3.17 ml/min. Only 0.84 mg diquat could be eliminated from the blood serum by 11.5 hrs of dialysis. Hemodialysis is therefore not an efficient technique for removing amounts of diquat from the organism that are toxicologically relevant one day after ingestion.
Efficacy of gut lavage, hemodialysis, and hemoperfusion in the therapy of paraquat or diquat intoxication
1976
Clinical and in vitro investigations were carried out to test the efficacy of gut lavage, hemodialysis, and hemoperfusion in the treatment of poisoning with paraquat or diquat. In a patient suffering from diquat intoxication 130 times more diquat was removed by gut lavage 30 h after ingestion than was removed by complete aspiration of the gastric contents. Determination of in vitro clearances for paraquat and diquat by hemodialysis showed that, at serum concentrations of 1-2 ppm, such as are frequently encountered in poisoning in man, toxicologically relevant quantities of herbicide cannot be removed from the body. At a concentration of 20 ppm, on the other hand, hemodialysis proved to be e…
Improving the solid-phase extraction of “quat” pesticides from water samples
1998
A novel strategy, based on the addition of a cationic surfactant, for preventing the interferences associated with a diminution in the efficacy of solid-phase extraction (SPE) with silica cartridges of diquat, paraquat and difenzoquat in water is developed. Conditions for extraction are optimised with respect to pH, cationic surfactant and its concentration. Humic acids, anionic surfactants, inorganic salts and other organic contaminants like pesticides, phenols, polycyclic aromatic hydrocarbons and polychlorinated biphenyls produce the studied interferences. The best performance is shown in the improvement of the "quats" recovery from waters with high levels of humic acids and anionic surf…
Klinik und Morphologie der akuten peroralen Diquatintoxikation (Reglone)
1971
Klinische Daten, morphologische Befunde und quantitative Giftanalysen einer letal verlaufenden akuten Intoxikation durch Trinken von Reglone (Diquat) werden beschrieben, da ahnliche Falle aus der Literatur bisher nicht bekannt sind.
Synthesis, Optical Properties, and DNA Interaction of New Diquats Based on Triazolopyridines and Triazoloquinolines
2017
New diquat derivatives based on [1,2,3]triazolo[1,5-a]pyridine and [1,2,3]triazolo[1,5-a]quinoline have been synthesized in excellent yields. To evaluate the effect of the alkyl bridge length, ethane and propane dibromo alkane substrates were used for their synthesis. Theoretical calculations predicted a very small energetic barrier between the two possible enantiomers P (Ra ) and M (Sa ), which makes them very difficult to resolve. Thermal denaturation studies, UV/Visible spectroscopy, and fluorescence titrations with ct-DNA evidenced the intercalation of the quinoline derivatives in DNA.
Aplicación de Metodologías Actuales a la Síntesis de Moléculas de Interés Farmacológico y Estructuras Moleculares Complejas Basadas en Interacciones …
2018
La presente tesis doctoral titulada “Aplicación de Metodologías Actuales a la Síntesis de Moléculas de Interés Farmacológico y Estructuras Moleculares Complejas basadas en Interacciones Débiles” está centrada en el concepto de ‘Complejidad Molecular’, tanto en términos de composición, constitución, configuración o conformación. Tres han sido las entidades químicas que han supuesto la fuente de inspiración a la hora de afrontar esta tesis doctoral y que constituyen claros ejemplos de ‘Complejidad Molecular’: el glicoaldehído debido a su complejidad estructural (combinación de efecto electrónicos entre el grupo alcohol y el grupo aldehído; tautomería ceto-enólica…), el diquat debido a su comp…