Results 301 to 310 of about 81,916 (310)
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Photolytic degradation of ciprofloxacin in solid and aqueous environments: kinetics, phototransformation pathways, and byproducts

Environmental Science and Pollution Research, 2017
Many lipophilic pharmaceuticals may be sorbed in solid phases, leading to different photochemical behaviors. This study investigated the photochemistry of ciprofloxacin in a solid-phase system and compared it to that in a water-phase system. Kaolinite was used as the model solid matrix.
Angela Yu-Chen Lin   +2 more
openaire   +3 more sources

Kinetic model for the radical degradation of tri-halonitromethane disinfection byproducts in water

Radiation Physics and Chemistry, 2012
Abstract The halonitromethanes (HNMs) are byproducts of the ozonation and chlorine/chloramine treatment of drinking waters. Although typically occurring at low concentrations HNMs have high cytotoxicity and mutagenicity, and may therefore represent a significant human health hazard. In this study, we have investigated the radical based mineralization
Pieror R. Gardinali   +5 more
openaire   +2 more sources

Rationalizing the mechanism of HMDS degradation in air and effective control of the reaction byproducts

SPIE Proceedings, 2008
The concern over molecular contamination on the surfaces of optics continues to grow. Most recently, this concern has focused on siloxane contamination resulting from hexamethyldisilazane (HMDS) which is commonly used as a wafer treatment to improve photoresist adhesion onto wafers.
Gerald Weineck   +2 more
openaire   +2 more sources

Free-Radical Chemistry of Disinfection Byproducts. 3. Degradation Mechanisms of Chloronitromethane, Bromonitromethane, and Dichloronitromethane

The Journal of Physical Chemistry A, 2009
Halonitromethanes (HNMs) are byproducts formed through ozonation and chlorine/ chloramine disinfection processes in drinking waters that contain dissolved organic matter and bromide ions. These species occur at low concentration but have been determined to have high cytotoxicity and mutagenicity and therefore may represent a human health hazard.
Piero R. Gardinali   +5 more
openaire   +3 more sources

Molecular dynamics studies on the mutational structures of a nylon-6 byproduct-degrading enzyme

Chemical Physics Letters, 2011
Abstract In order to understand roles of E168 and Y170 residues in loop-segment (N166–V177) of nylon-6 byproduct-degrading enzymes, we determined substrate-binding structures of E168Q and Y170F mutants using molecular dynamics simulation with in silico mutations.
Yasuteru Shigeta   +10 more
openaire   +2 more sources

The different effects of oxygen and air DBD plasma byproducts on the degradation of methyl violet 5BN

Journal of Hazardous Materials, 2009
Through a novel design of the dielectric barrier discharge (DBD) plasma plume used in fabric-fiber surface modification, its discharge byproducts mainly including downstream gases and ultraviolet light were used to treat the dye solution. The different influence of oxygen and air DBD plasmas on the degradation of methyl violet 5BN (MV-5BN), which is ...
Shihua Chen   +3 more
openaire   +3 more sources

Toxicity biomonitoring of degradation byproducts using freeze-dried recombinant bioluminescent bacteria

Analytica Chimica Acta, 2003
Abstract A toxicity biomonitoring system using freeze-dried recombinant bioluminescent bacteria was implemented to diagnose the biotreatment of 2,4,5-trichlorophenol and its degradation byproducts of using a cell-free culture broth of Phanerochaete chrysosporium.
Man Bock Gu, Sue Hyung Choi
openaire   +2 more sources

Oxidation of Ibuprofen in Water by Uv/O3 Process: Removal, Byproducts, And Degradation Pathways

Journal of Water Process Engineering, 2023
Chang Jing   +6 more
openaire   +1 more source

Basic microbial degradation rates and chemical byproducts of selected organic compounds

Water Research, 1981
J.G. Liehr   +3 more
openaire   +2 more sources

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