Results 1 to 10 of about 23,107 (206)

Direct and indirect photolysis of triclocarban in the presence of dissolved organic matter

open access: yesElementa: Science of the Anthropocene, 2015
Photolysis is an important attenuation pathway for the removal of wastewater effluent organic micropollutants from surface waters. In this work, direct and indirect processes leading to the degradation of the disinfectant, triclocarban were studied ...
Tamara D. Trouts, Yu-Ping Chin
doaj   +1 more source

Green approach for tracking the photofate of ciprofloxacin and levofloxacin in different matrices adopting synchronous fluorescence spectroscopy: a kinetic study

open access: yesRoyal Society Open Science, 2023
First derivative synchronous fluorescence spectroscopy (FDSFS) was applied to detect and quantify either ciprofloxacin (CIP) or levofloxacin (LEV) simultaneously with their photodegradation products, where the photolytic pathway for each analyte was ...
Mohammed E. Draz   +3 more
doaj   +1 more source

UV Laser-Induced Photodecomposition of Matrix-Isolated Salicylhydroxamic Acid: Identification of New Isocyanate Complexes

open access: yesMolecules
Photochemical reactions of salicylhydroxamic acid were induced using tunable UV laser radiation followed by FTIR spectroscopy. Four pairs of co-products were experimentally found to appear in the photolysis: C6H4(OH)NCO⋯H2O (1), C6H4(OH)C(O)N⋯H2O (2 ...
Magdalena Sałdyka, Zofia Mielke
doaj   +1 more source

STUDY OF THE STABILITY OF THE SUBSTANCE 3-[2-(4-PHENYL-1-PIPERAZINO)-2-OXOETHYL]QUINAZOLINE-4(3Н)-ONE UNDER STRESSFUL CONDITIONS

open access: yesФармация и фармакология (Пятигорск), 2021
The aim of the research was to study the stability of a new pharmaceutical substance 3-[2-(4-phenyl-1-piperazino)-2-oxoethyl]quinazoline-4(3Н)-one under stress conditions.Materials and methods.
T. A. Gendugov   +3 more
doaj   +1 more source

The Influence of the Degradation of Tetracycline by Free Radicals from Riboflavin-5′-Phosphate Photolysis on Microbial Viability

open access: yesMicroorganisms, 2019
Tetracycline (TC) is a broad-spectrum antibiotic compound. Wastewater with TC may have an adverse effect on ecosystems. Riboflavin-5′-phosphate (FMN or flavin mononucleotide) is a non-toxic product of the phosphorylation of vitamin B2 and is ...
Shiuh-Tsuen Huang   +7 more
doaj   +1 more source

Degradation and Pathways of Carvone in Soil and Water

open access: yesMolecules, 2022
Carvone is a monoterpene compound that has been widely used as a pesticide for more than 10 years. However, little is known regarding the fate of carvone, or its degradation products, in the environment.
Chenyu Huang   +5 more
doaj   +1 more source

DEGRADASI ZAT WARNA SUDAN I SECARA SONOLISIS DAN FOTOLISIS DENGAN PENAMBAHAN TiO2-ANATASE

open access: yesJurnal Riset Kimia, 2015
Degradation of Sudan I dye had been done with sonolysis and photolysis by adding anatase-TiO2.  Sonolysis method were performed using an ultrasound with frequency  of 45 kHz.
Safni -   +4 more
doaj   +1 more source

Electrochemical Photocatalytic Degradation of Rhodamine B Dye by Sm3+ doped Titanium Dioxide (Sm-TiO2) in Natural Sunlight Exposure

open access: yesInternational Journal of Electrochemical Science, 2021
Nanoparticles Sm-TiO2 is successfully synthesize by photolysis method for degrading Rhodamine B (RhB) dye under direct sunlight. The prepared nanoparticles were characterized by X-photoelectron spectrum (XPS), X-ray diffraction (XRD), Raman spectrum ...
Zaid H. Mahmoud   +2 more
doaj   +1 more source

Ultraviolet B (UVB) Photosensitivities of Tea Catechins and the Relevant Chemical Conversions

open access: yesMolecules, 2016
Ultraviolet B (UVB) photosensitivities of eight catechins were screened. In both water and ethanol, epicatechin (EC, 575 μM) and catechin (C, 575 μM) exhibited low photostabilities under 6 h UVB radiation with the generation of yellow photoproducts ...
Meng Shi   +5 more
doaj   +1 more source

Is either direct photolysis or photocatalysed H-shift of peroxyl radicals a competitive pathway in the troposphere?

open access: yesRoyal Society Open Science, 2020
Peroxyl radicals (RO[Formula: see text]) are key intermediates in atmospheric chemistry, with relatively long lifetimes compared to most other radical species.
Rashid R. Valiev, Theo Kurten
doaj   +1 more source

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