Buscar
Mostrando ítems 41-50 de 78
A simple and rapid screening method for sulfonamides in honey using a flow injection system coupled to a liquid waveguide capillary cell
(Elsevier B.V., 2014-04-01)
A rapid and simple screening method was developed for the determination of sulfonamides in honey samples by flow injection analysis (FIA) coupled to a liquid waveguide capillary cell. The proposed method is based on the ...
Photochemical transformation of antibiotics by excitation of Fe(III)-complexes in aqueous medium
(Elsevier B.V., 2014-01-30)
The degradation of sulfadiazine (STZ) and sulfathiazole (SDZ) induced by the excitation of ferric ions (Fe3+) was studied in this work. The effect of Fe3+ ion concentration, pH, iron complexation and irradiation source on ...
Modification of a Brazilian natural clay and catalytic activity in heterogeneous photo-Fenton process
(2022-03-01)
The catalytic activity of a Brazilian natural clay modified with the immobilization of iron oxide was applied in the heterogeneous Fenton process for the degradation of the antibiotic sulfathiazole (STZ). The clay without ...
Parameters affecting sulfonamide photo-Fenton degradation - Iron complexation and substituent group
(Elsevier B.V. Sa, 2012-03-15)
The photo-Fenton degradation of the sulfonamide antibiotics sulfadiazine (SDZ) and sulfathiazole (STZ) mediated by Fe(III)-oxalate was studied in this work. The influence of iron complexation. H2O2 concentration and pH on ...
Microextraction in packed sorbent for determination of sulfonamides in egg samples by liquid chromatography and spectrophotometric detection
(Sociedade Brasileira de Química, 2011)
The present work describes a successful application of microextraction packed sorbent and liquid chromatography with diode array detection (MEPS/LC-DAD) for simultaneous determination of the sulfonamides (sulfacetamide, ...
Broad spectrum photocatalytic system based on BiVO4 and NaYbF4:Tm3+ upconversion particles for environmental remediation under UV-vis-NIR illumination
(2019-04-01)
The development of photocatalysts responsive towards a broader region of the solar (UV-to-NIR) light is important for efficient harvesting of sunlight for photochemical and photoelectrical applications. In this study, two ...
Parameters affecting sulfonamide photo-Fenton degradation - Iron complexation and substituent group
(Elsevier B.V. Sa, 2014)