Results 271 to 280 of about 103,942 (331)
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Insight into the Photodegradation of Microplastics Boosted by Iron (Hydr)oxides.
Environmental Science and Technology, 2022Iron (hydr)oxides as a kind of natural mineral actively participate in the transformation of organic pollutants, but there is a large knowledge gap in their impacts on photochemical processes of microplastics (MPs). This study is the first to examine the
L. Ding +8 more
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Bulletin of Environmental Contamination and Toxicology, 1987
Bulletin of Environmental Contamination and Toxicology ; 38 ; 5 ; 820-826 ...
Mok, C.Y. +3 more
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Bulletin of Environmental Contamination and Toxicology ; 38 ; 5 ; 820-826 ...
Mok, C.Y. +3 more
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Photodegradation of Imidacloprid
Journal of Agricultural and Food Chemistry, 1999The photolytic decomposition of the insecticide imidacloprid (1) in HPLC grade water and of imidacloprid as the formulated product Confidor insecticide in tap water was studied using HPLC methodology. The structures of several degradates have been determined in aquatic medium, and the DT(50) values of imidacloprid and Confidor have been measured.
H, Wamhoff, V, Schneider
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Photodegradation of Penoxsulam
Journal of Agricultural and Food Chemistry, 2006This study was carried out to characterize the photodegradation of penoxsulam and to evaluate the significance of photolysis for its fate and dissipation. Degradation studies of (14)C-labeled isotopes of penoxsulam in a "merry-go-round" reactor suggest that aqueous photodegradation proceeds via three possible pathways: cleavage of the sulfonamide ...
Thomas W, Jabusch, Ronald S, Tjeerdema
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Journal of Polymer Science Part A-1: Polymer Chemistry, 1972
AbstractUnique photodegradable polyamides have been prepared by solution polymerization of diphenyl α‐truxillate or δ‐truxinate with hexamethylene or nonamethylenediamine, followed by melt polymerization. Photochemical properties of resulted polyamides were studied spectroscopically and are discussed in terms of photoreversibility and monomeric ...
Hiroshi Takahashi +3 more
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AbstractUnique photodegradable polyamides have been prepared by solution polymerization of diphenyl α‐truxillate or δ‐truxinate with hexamethylene or nonamethylenediamine, followed by melt polymerization. Photochemical properties of resulted polyamides were studied spectroscopically and are discussed in terms of photoreversibility and monomeric ...
Hiroshi Takahashi +3 more
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, 2021
The photocatalytic degradation of antibiotics is a very promising technique to solve the pollution issues of antibiotics in water. Furthermore, catalysts play a critical role in the photocatalytic process.
Suqing Wu, Yan Lin, Y. Hu
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The photocatalytic degradation of antibiotics is a very promising technique to solve the pollution issues of antibiotics in water. Furthermore, catalysts play a critical role in the photocatalytic process.
Suqing Wu, Yan Lin, Y. Hu
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Environmental Technology, 1995
The photodegradation of pesticides was investigated on adsorbed phases: silica, kaolin, bentonite and on a standard soil. Kinetic results show that the photodegradation of phenmedipham is dependant on the nature of the support. On silica and bentonite the degradation is immediate while the photodegradation is slow on kaolin and standard soil. Also, the
S. Guittonneau, F. Khelifi, P. Meallier
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The photodegradation of pesticides was investigated on adsorbed phases: silica, kaolin, bentonite and on a standard soil. Kinetic results show that the photodegradation of phenmedipham is dependant on the nature of the support. On silica and bentonite the degradation is immediate while the photodegradation is slow on kaolin and standard soil. Also, the
S. Guittonneau, F. Khelifi, P. Meallier
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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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Photodegradable formulations of DDT
Experientia, 1976The incorporation of diphenylamine and diethylaniline in commercial DDT-WDP formulations sprayed on Phaseolus aureus and Tabernaemontana coronaria revealed that both these chemicals enhanced the initial rate of loss of DDT. Both these sensitizers exhibited no immediate adverse effect on the storage stability, pH, sieve requirement and colour of the ...
B S, Parmar, S Y, Pandey, S K, Mukerjee
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Photodegradation paths of cefotaxime
Journal of Pharmaceutical Sciences, 1988The degradation kinetics of cefotaxime sodium salt in aqueous solution, under UV light at 254 nm, was investigated by HPLC and antibiotic activity. This degradation is the result of two competitive processes, an isomerization and a photolysis. This study is mostly about the isomerization step.
D A, Lerner +4 more
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