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Aqueous Photolysis of Niclosamide
Journal of Agricultural and Food Chemistry, 2004The photodegradation of [(14)C]niclosamide was studied in sterile, pH 5, 7, and 9 buffered aqueous solutions under artificial sunlight at 25.0 +/- 1.0 degrees C. Photolysis in pH 5 buffer is 4.3 times faster than in pH 9 buffer and 1.5 times faster than in pH 7 buffer. In the dark controls, niclosamide degraded only in the pH 5 buffer.
Phillip W, Graebing +3 more
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Journal of Organometallic Chemistry, 1978
Abstract The synthesis and photochemistry of 1-silyl- and 1-disilanyl-3-trimethylsilyl-3-phenylpropynes, and 1-silyl- and 1-disilanyl-1,3-bis(trimethylsilyl)-3-phenylpropadienes is described. The UV-irradiation of the 1-silyl- and 1-disilanyl-3-trimethylsilyl-3-phenylpropynes with a high-pressure mercury lamp resulted in formation of equilibrium ...
Mitsuo Ishikawa +3 more
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Abstract The synthesis and photochemistry of 1-silyl- and 1-disilanyl-3-trimethylsilyl-3-phenylpropynes, and 1-silyl- and 1-disilanyl-1,3-bis(trimethylsilyl)-3-phenylpropadienes is described. The UV-irradiation of the 1-silyl- and 1-disilanyl-3-trimethylsilyl-3-phenylpropynes with a high-pressure mercury lamp resulted in formation of equilibrium ...
Mitsuo Ishikawa +3 more
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PHOTOLYSIS OF POLYRIBOBROMOURIDYLIC ACID
Photochemistry and Photobiology, 1972Abstract—Photolysis of polyribobromouridylic acid with 313 nm light at neutral pH caused extensive debromination and a loss of A280(280–nm absorbance) without comparable increase in A260. At an exposure of 190μE/cm2, strand breakage occurred on the average of one break every 170 BrU residues. Little if any pyrimidine hydrate was produced.
M, Ehrlich, M, Riley
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THE AQUEOUS PHOTOLYSIS OF TRICLOPYR
Environmental Toxicology and Chemistry, 1993Abstract The aqueous photolysis of triclopyr was examined in both pH 7-buffered water and natural river water under artificial lights and midsummer sunlight (40°N latitude). The pseudo-first-order half-lives in pH 7-buffered water and natural river water averaged 0.5 and 1.3 d, respectively, at 25°C.
Kent B. Woodburn +3 more
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TECHNIQUES OF FLASH PHOTOLYSIS*
Photochemistry and Photobiology, 1968Abstract— The design of a typical flash photolysis equipment is considered in detail and the factors limiting the time resolution and the sensitivity are analyzed. The characteristics of low pressure discharge lamps are compared with those of high pressure arcs, of exploding foils and of the electromagnetic ‘pinch’ discharge.
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Hydrolysis and Photolysis of Hexachlorocyclopentadiene
Archives of Environmental Contamination and Toxicology, 1996The radioactivity on adding 14C-Hexachlorocyclopentadiene (Hex) to water (7 7gmg/L) decreased by 18% on Day 2 and by 31 to 55% by Day 42. On Day 42, the radioactivity remaining in water consisted of apolar (petroleum ether-extractable), polar (ethyl acetate-extractable), and hydrophilic hydrolysis products with Hex amounting to only 8% of the total ...
A. A. Podowski, M. A. Q. Khan
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Science, 1970
Photolysis of mixtures of certain alkyl halides and aromatic amines produces dehalogenation of the halide. These reactions involve a photoinduced charge transfer from the amine to the halide. Photolysis of tritolylamine and carbon tetrachloride produces tritolylaminium chloride. Photolysis of 1,1,1-trichloro-2,2-bis( p
L L, Miller, R S, Narang
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Photolysis of mixtures of certain alkyl halides and aromatic amines produces dehalogenation of the halide. These reactions involve a photoinduced charge transfer from the amine to the halide. Photolysis of tritolylamine and carbon tetrachloride produces tritolylaminium chloride. Photolysis of 1,1,1-trichloro-2,2-bis( p
L L, Miller, R S, Narang
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A photolysis coefficient for characterizing the response of aqueous constituents to photolysis
Frontiers of Environmental Science & Engineering, 2015UV photolysis and UV based advanced oxidation processes (AOPs) are gaining more and more attention for drinking water treatment. Quantum yield (o) and molar absorption coefficient (e) are the two critical parameters measuring the effectiveness of photolysis of a compound.
David R. Hokanson +2 more
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Photolysis of polyvinylbenzophenone
Polymer, 1969Abstract Photoreduction occurs when polyvinylbenzophenone (PVB) is irradiated at 3 650 A. Recombination of the formed radicals leads to cyclization when polymer is irradiated in dilute solutions and to crosslinking in concentrated solutions and solid films.
C David, W Demarteau, G Geuskens
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2015
Solar light is able to photoinduce the phototransformation of a lot of pesticides. In this chapter, we describe some of the most important photochemical processes leading to the chemical transformation of pesticides, in particular photodehalogenation, photoisomerization, photo-Fries and photo-Claisen.
Richard, Claire, Hoffmann, Norbert
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Solar light is able to photoinduce the phototransformation of a lot of pesticides. In this chapter, we describe some of the most important photochemical processes leading to the chemical transformation of pesticides, in particular photodehalogenation, photoisomerization, photo-Fries and photo-Claisen.
Richard, Claire, Hoffmann, Norbert
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