Zobrazeno 1 - 10
of 40
pro vyhledávání: '"N, Moalla"'
Publikováno v:
Extracta Mathematicae (2021)
In this paper, we give some results on the essential B-spectra of a linear operator pencil, which are used to determine the essential B-spectra of an integro-differential operator with abstract boundary conditions in the Banach space Lp([−a, a] ×
Externí odkaz:
https://doaj.org/article/fc4bb3cc1b9b4c3ab6a8c0b768ca3711
Sensitive ratiometric sensor for Al(III) detection in water samples using luminescence or eye-vision
Publikováno v:
Analytical Sciences.
A facile, quick, and sensitive ratiometric luminescence sensor is designed for detection aluminum ions in water samples using luminescence or eye-vision. This approach relies on the emission change of the europium(III) complex with 3-(2-naphthoyl)-1,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02336825fca6a867151c498f8bbe7189
https://doi.org/10.1007/s44211-023-00340-6
https://doi.org/10.1007/s44211-023-00340-6
Publikováno v:
RSC Advances. 12:27679-27686
A new fluorescence chemosensor based on (Z)-2-(1-(3-oxo-3H-benzo[f]chromen-2-yl)ethylidene)hydrazine-1-carbothioamide (CEHC) has been developed for the determination of the fluorescence probe of Fe(iii) in drinking water.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbddfecd3b443f3f8d059f6a677bbfd4
https://doi.org/10.1039/d2ra05144c
https://doi.org/10.1039/d2ra05144c
Publikováno v:
Aswan University Journal of Environmental Studies. 1:157-170
A simple and sensitive method for preconcentration and determination of Cd2+, Cu2+, Mn2+, Pb2+ and Zn2+ by flame atomic absorption spectrophotometer was developed. The method is based on the sorption of the studied elements as metal-dithizone complex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::721d0d95ecad59ec5ce0b5f7686fb561
https://doi.org/10.21608/aujes.2020.127578
https://doi.org/10.21608/aujes.2020.127578
Autor:
Mohamed H. Abdel-Rhman, G. G. El-Gamal, S. M. N. Moalla, Wael I. Mortada, Ibrahim M.M. Kenawy
Publikováno v:
Journal of Trace Elements in Medicine and Biology. 44:266-273
2-(3-Ethylthioureido)benzoic acid was prepared and characterized by electronic spectrum, elemental analysis, Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance spectrum and mass spectrum. The produced ligand was applied for the pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae2617f38e7eafe2dfcee59eeeca1f80
https://doi.org/10.1016/j.jtemb.2017.09.003
https://doi.org/10.1016/j.jtemb.2017.09.003
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 313:69-77
A micro-cloud point extraction method was discussed for preconcentration and spectrophotometric quantification of U(VI). The method depends on complex formation between U(VI) and 2-(4-sulphophenyloazo)-1,8-dihydroxy-3,6-naphtalenedisulphonic acid (SP
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bfb27d7753c5d6532eb721b6c336f1a
https://doi.org/10.1007/s10967-017-5281-3
https://doi.org/10.1007/s10967-017-5281-3
Autor:
Haitham Kalil, S. M. N. Moalla, Heidi B. Martin, Alaa S. Amin, Nasser Mohammed Hosny, Eman R. Darwish, Shaimaa Maher
Publikováno v:
ECS Meeting Abstracts. :1978-1978
Chemical Oxygen Demand (COD) is referring to the total amount of oxygen used for a chemical oxidation of organic compounds in a water sample. COD stands as an important tool for water safety and water quality standard. Fast-scan cyclic voltammetry (F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52cf42dbab8f6a61db039624b777fbe6
https://doi.org/10.1149/ma2021-01511978mtgabs
https://doi.org/10.1149/ma2021-01511978mtgabs
Autor:
Alaa S. Amin, S. M. N. Moalla
Publikováno v:
RSC Advances. 6:1938-1944
A sensitive, selective and rapid method for the determination of gallium based on the sensitive reaction of Ga(III) with 1-(2-benzothiazolylazo)-2-hydroxy-3-naphthoic acid (BTAHN) and the solid phase extraction of the BTAHN–Ga(III) complex on a col
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7456f786a2a0ede315ee38c6323e8e75
https://doi.org/10.1039/c5ra21368a
https://doi.org/10.1039/c5ra21368a
Publikováno v:
RSC Advances. 6:73797-73804
A method for the determination of scandium in monazite and environmental samples at trace levels is presented. The Sc(III) complex is preconcentrated using the cloud point extraction process with the nonionic surfactant Triton X-100 to extract the Sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc22e0aeed51290cfe8462334b7e19d4
https://doi.org/10.1039/c6ra10049j
https://doi.org/10.1039/c6ra10049j
Autor:
S. M. N. Moalla, Alaa S. Amin
Publikováno v:
Analytical Methods. 7:10229-10237
A simple and rapid dispersive liquid–liquid microextraction procedure (IL-DLLME) based on an ionic liquid was developed for the selective determination of nickel with spectrophotometric detection. Nickel was initially complexed with 5-(2-benzothiaz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afaddca07e497d7267b571f72d200077
https://doi.org/10.1039/c5ay02121a
https://doi.org/10.1039/c5ay02121a