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Photodegradation of carbofuran
Chemosphere, 1990Abstract Carbofuran (2,3-dihydro-2,2 dimethyl benzofuranyl-7-yl-methyl carbamate, I) when irradiated by sunlight in different solvents furnished several photoproducts. Eleven compounds have been characterized, out of which nine compounds (II to X) by GC/MS and two compounds (XI and XII) by direct comparison with authentic samples.
P. Raha, Asit K. Das
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Photodegradation of buprofezin
Toxicological & Environmental Chemistry, 1997Buprofezin, a new insecticide cum insect growth regulator, when subjected to UV ‐ photodegra‐dation in methanolic solution (1000 ppm) yielded seven photoproducts which on the basis of Chromatographic and spectroscopic evidences were characterised as (i) N‐tert‐butyl‐N'‐isopropyl thiourea, (ii) N‐ (N‐methyl carbamoyl) ‐N‐isopropyl‐N'‐tert‐butyl thiourea,
Subhendu Datta, Suresh Walia
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2015
Photodegradationconcerns the breaking of a molecule to smaller molecules (degradation and/or mineralization) by means of the absorption of photons of suitable wavelength such as that found in the infrared radiation, visible light and ultraviolet light of the solar spectrum.
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Photodegradationconcerns the breaking of a molecule to smaller molecules (degradation and/or mineralization) by means of the absorption of photons of suitable wavelength such as that found in the infrared radiation, visible light and ultraviolet light of the solar spectrum.
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Photodegradation of calixarenes
Dyes and Pigments, 1996Calixarenes are interesting compounds with respect to their high melting points and complexing properties. Spectroscopic characteristics and photochemical stability data are reported in these present studies of quantum yield of fluorescence, phosphorescence and photodegradation. The photodegradation occurs from the triplet state.
P. Méallier +3 more
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Photodegradation and photostabilization of polymers
Journal of Photochemistry, 1984L'origine des impuretes photosensibilisantes dans les polymeres. Photostabilisation des polymeres.
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Journal of Applied Polymer Science, 1975
AbstractPolymer photodegradation can be achieved by introducing carbonyl groups which absorb radiations above the 300 mμ wavelength and thus are sensitized by solar or atmospheric radiations.We introduced these groups in polyethylene by oximation of aliphatic chain with photoactivated NOCI and hydrolysis of the oxime.Modified polymers show, during ...
Vittorio Pozzi +3 more
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AbstractPolymer photodegradation can be achieved by introducing carbonyl groups which absorb radiations above the 300 mμ wavelength and thus are sensitized by solar or atmospheric radiations.We introduced these groups in polyethylene by oximation of aliphatic chain with photoactivated NOCI and hydrolysis of the oxime.Modified polymers show, during ...
Vittorio Pozzi +3 more
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Photodegradation of Benthiocarb
Chemistry and Ecology, 1996Abstract The photodegradation of 14C-benthiocarb in water, on a glass surface, on soil and silica gel TLC plates was studied. the study was designed to obtain some information of its dissipation and photodegradation under various laboratory conditions. Benthiocarb degrades readily when exposed to either sunlight or UV light (254 nm).
Hong-Ming Cheng, Deng-Fwu Hwang
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Pest Management Science, 2000
The photodegradation of aqueous alcoholic solutions of fenarimol at λ ≥ 250 nm has been examined. UV irradiation of an aqueous methanolic solution for 24 h yielded two photoproducts, identified as 2,4′-dichlorobenzil and p-chlorobenzoic acid, while irradiation of a solution in aqueous isopropanol yielded p-chlorobenzoic acid and two additional products
Nivedita Sur +4 more
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The photodegradation of aqueous alcoholic solutions of fenarimol at λ ≥ 250 nm has been examined. UV irradiation of an aqueous methanolic solution for 24 h yielded two photoproducts, identified as 2,4′-dichlorobenzil and p-chlorobenzoic acid, while irradiation of a solution in aqueous isopropanol yielded p-chlorobenzoic acid and two additional products
Nivedita Sur +4 more
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, 1996 In this book on physical characteristics and practical aspects of polymer photodegradation Rabek emphasizes the experimental work on the subject. The most important feature of the book is the physical interpretation of polymer degradation, e.g. mechanism
Jan F. Rabek, Rabek, Jan F
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Photodegradation of polyoxymethylene
Polymer Photochemistry, 1981Abstract The effect of photo-irradiation conditions on the photodegradation of polyoxymethylene is examined by the changes in mechanical property, weight loss, infra-red-, ultra-violet- and luminescence spectra and surface appearance of the polymer. The photodegradation of the polymer is extremely susceptible to the wavelength of the irradiated light.
O. Nishimura, Z. Osawa
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