Search Results - "Ahmed, Salwa A."

Transition Metal Complexes of Thiosemicarbazides, Thiocarbohydrazides, and Their Corresponding Carbazones with Cu(I), Cu(II), Co(II), Ni(II), Pd(II), and Ag(I)-A Review by Aly, Ashraf A, Abdallah, Elham M, Ahmed, Salwa A, Rabee, Mai M, Bräse, Stefan

“…This review focuses on some interesting and recent applications of transition metals towards the complexation of thiosemicarbazides, thiocarbohydrazides, and…”
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Silica coated magnetic particles using microwave synthesis for removal of dyes from natural water samples: Synthesis, characterization, equilibrium, isotherm and kinetics studies by Ahmed, Salwa A., Soliman, Ezzat M.

“…•Magnetic solids are widely used in detection and analytical systems.•Microwave technique used to introduce silica coated magnetic particles (SG-MPs).•SG-MPs…”
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Effect of Aliphatic Diamine Length Functionalized Silica Coated Iron Magnetic Nanoparticles on Metal Capacity and Speed of Cu(II) Uptake from Aqueous Media by AHMED, Salwa A., SOLIMAN, Ezzat M.

“…Three solid phase extractors based on silica coated magnetic nanoparticles (Fe3O4–SiO2) functionalized aliphatic diamines were synthesized. The magnetic core…”
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New Trend for Acceleration Solid Phase Extraction Process Based on Using Magnetic Nano-adsorbents along with Surface Functionalization through Microwave Assisted Solvent-free Technique by AHMED, Salwa A., SOLIMAN, Ezzat M.

“…The use of a microwave assisted solvent-free technique for silica coating of iron magnetic nanoparticles (Fe3O4-MNPs) and their functionalization with three…”
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Alumina modified by dimethyl sulfoxide as a new selective solid phase extractor for separation and preconcentration of inorganic mercury(II) by Soliman, Ezzat M., Saleh, Mohamed B., Ahmed, Salwa A.

“…Dimethyl sulfoxide (DMSO) was simply immobilized to neutral alumina via quite strong hydrogen bonding between sulfoxide oxygen and surface alumina hydroxo…”
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Solid-Phase Extractors Based on 8-Aminoquinoline and 2-Aminopyridine Covalently Bonded to Silica Gel for the Selective Separation and Determination of Calcium in Natural Water and Pharmaceutical Samples by SOLIMAN, Ezzat M., AHMED, Salwa A.

“…Two new silica-gel phases were produced directly via the chemical interaction of 3-chloropropyltrimethoxysilane modified silica gel with 8-aminoquioline, phase…”
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New solid phase extractors for selective separation and preconcentration of mercury (II) based on silica gel immobilized aliphatic amines 2-thiophenecarboxaldehyde Schiff’s bases by Soliman, Ezzat M., Saleh, Mohamed B., Ahmed, Salwa A.

“…2-Thiophenecarboxaldhyde is chemically bonded to silica gel surface immobilized monoamine, ethylenediamine and diethylenetriamine by a simple Schiff’s base…”
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Batch and fixed-bed column techniques for removal of Cu(II) and Fe(III) using carbohydrate natural polymer modified complexing agents by Ahmed, Salwa A.

“…Wood sawdust, a by-product of the world industry, is a low cost and promising industrial waste with cellulose–lignin polymeric structure. Its sorption…”
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Alumina physically loaded by thiosemicarbazide for selective preconcentration of mercury(II) ion from natural water samples by Ahmed, Salwa A.

“…The multifunctional ligand, thiosemicarbazide, was physically loaded on neutral alumina. The produced alumina-modified solid phase (SP) extractor named,…”
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Adsorptive removal of oil spill from sea water surface using magnetic wood sawdust as a novel nano-composite synthesized via microwave approach by Soliman, Ezzat M., Ahmed, Salwa A., Fadl, Aliaa A.

“…Water pollution by oil is a serious environmental problem. Developing new generation of benign adsorbents satisfying several criteria required for real…”
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Selective separation of silver(I) and mercury(II) ions in natural water samples using alumina modified thiouracil derivatives as new solid phase extractors by Soliman, Ezzat M., Ahmed, Salwa A.

“…A simple and reliable solid-phase extraction (SPE) method has been developed to synthesise two new sorbents: 6-propyl-2-thiouracil and 5,6-diamino-2-thiouracil…”
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Removal of lead and sodium ions from aqueous media using natural wastes for desalination and water purification by Ahmed, Salwa A.

“…Sugarcane bagasse (SCB) and beet pulp (BP) are promising low cost natural wastes with cellulose–lignin polymeric structure. Their adsorption properties for the…”
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Microwave‐enforced green synthesis of novel magnetic nano composite adsorbents based on functionalization of wood sawdust for fast removal of calcium hardness from water samples by Soliman, Ezzat M., Ahmed, Salwa A., Fadl, Aliaa A.

“…Developing new generation of adsorbents for water treatment to reduce calcium hardness and producing high quality water is important and continuous trend. This…”
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Metal complexes of thiosemicarbazones derived by 2-quinolones with Cu(I), Cu(II) and Ni(II); Identification by NMR, IR, ESI mass spectra and in silico approach as potential tools against SARS-CoV-2 by Aly, Ashraf A, Abdallah, Elham M., Ahmed, Salwa A., Rabee, Mai M., Abdelhafez, El-Shimaa M.N.

“…•Substituted thiosemicarbazones derived by 2-quinolone were synthesized and characterized by ESI, IR and NMR spectra in addition to elemental analyses.•Cu(I)…”
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Removal of calcium ions from aqueous solutions by sugar cane bagasse modified with carboxylic acids using microwave-assisted solvent-free synthesis by Soliman, Ezzat M., Ahmed, Salwa A., Fadl, Aliaa A.

“…Removal of Ca(II) from aqueous solutions was potentially achieved using two new naturally benign sorbents. They were obtained via modification of sugar cane…”
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Metal complexes of new thiocarbohydrazones of Cu(I), Co(II), and Ni(II); identification by NMR, IR, mass, UV spectra, and DFT calculations by Aly, Ashraf A., Abdallah, Elham M., Ahmed, Salwa A., Awad, Mohamed K., Rabee, Mai M., Mostafa, Sara M., Bräse, Stefan

“…Substituted thiocarbohydrazones were synthesized to study their complexation capability towards Cu(I), Co(II), and Ni(II) salts. The Cu(I) complexes showed…”
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The Patterns of Acquired Upper and Lower Extremity Amputation at a Tertiary Centre in Saudi Arabia by Alshehri, Fayez M, Ahmed, Salwa A, Ullah, Sami, Ghazal, Haitham, Nawaz, Shah, Alzahrani, Ahmed S

“…Upper and lower extremity amputations are associated with variable degrees of physical disability. In Saudi Arabia, disability still represents a major…”
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Cathodic adsorptive stripping voltammetric determination of Ribavirin in pharmaceutical dosage form, urine and serum by Abdel Gaber, Ahmed A., Ahmed, Salwa A., Abdel Rahim, Asmaa M.

“…A sensitive, simple and rapid square-wave adsorptive stripping voltammetric method was developed and validated for the determination of Ribavirin in…”
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Reactivity of Thioglycolic Acid Physically and Chemically Bound to Silica Gel as New Selective Solid Phase Extractors for Removal of Heavy Metal Ions From Natural Water Samples by Soliman, Ezzat M., Mahmoud, Mohamed E., Ahmed, Salwa A.

“…A method is presented for the immobilization of thioglycolic acid moiety on the surface of active silica gel via a simple and direct synthetic route and based…”
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Novel route for silylation of silica gel and aliphatic amines immobilization based on microwave-assisted solvent free synthesis and their applications for Cu(II) and Fe(III) removal from natural water samples by Ahmed, Salwa A, Soliman, Ezzat M

“…This article describes a new route for silica gel silylation and immobilization of aliphatic amines based on microwave-assisted solvent free synthesis to…”
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