Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Magda S. Saleh"'
Publikováno v:
Journal of Pharmaceutical and Applied Chemistry. 4:155-167
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f4c0f3ae7741a884c5f38811b47d9ca
https://doi.org/10.18576/jpac/040301
https://doi.org/10.18576/jpac/040301
Publikováno v:
Food Analytical Methods. 10:865-875
Sunset Yellow E110 is one of the famous synthetic food dyes, which belongs to the family of azo dyes and widely used in food industry as additives and nutrient sources. Two highly sensitive and simple spectrophotometric methods are developed for dete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84a3623f29676dc2057637d8a7dda376
https://doi.org/10.1007/s12161-016-0630-3
https://doi.org/10.1007/s12161-016-0630-3
Publikováno v:
Computational Chemistry. :51-64
Two new sensitive spectrophotometric methods are reported for determination of tartrazine (Tz) (E102) in some commercial food samples. The first method involves two coupled reactions, the reduction of Cu(II) to Cu(I) by the analyte in acetate buffer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e7f8c77cd2740dfb79a1aba91f218eb
https://doi.org/10.4236/cc.2016.42005
https://doi.org/10.4236/cc.2016.42005
Publikováno v:
Computational Chemistry. :22-30
A highly simple, rapid, sensitive and selective method is developed for spectrophotometric determination of gabapentin in pure form as well as in pharmaceutical formulations. The method is based on the formation of a yellow Schiff base derived from t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7dd902aaf772d22310f6926eae9304c
https://doi.org/10.4236/cc.2014.22004
https://doi.org/10.4236/cc.2014.22004
Publikováno v:
Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry. 34:1069-1085
Cu(II) complexes of new bidentate and tridentate Schiff bases derived from the condensation of 3‐hydrazino‐6‐methyl[1,2,4]triazin‐5(4H)one and aromatic aldehyde derivatives were synthesized and characterized. The structure of the complexes pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dba069018b7b45f92022191f10f1c54a
https://doi.org/10.1081/sim-120039258
https://doi.org/10.1081/sim-120039258
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 127:29-42
The electronic absorption spectra of 2-hydroxy-1,4-naphthoquinone (HNQ) in one- and two-component solvents are discussed. The visible absorption of this reagent has been shown to arise from a charge-transfer transition of the zwitterionic tautomer st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be21192b0c873225b006466a38d40026
https://doi.org/10.1007/bf00807406
https://doi.org/10.1007/bf00807406
Autor:
Magda S. Saleh
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 126:377-384
pK a values of 2-hydroxy 3-pyridinol (HHP), 2-mercapto 3-pyridinol (MHP), and 2-carboxy-3-pyridinol (CHP) were determined by potentiometric titration in water/organic solvent mixtures containing 20 mole% of organic solvent at 25±0.1 °C and 0.1M ion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e938fabb1ddc551f4b76934ab7d0c13
https://doi.org/10.1007/bf00813199
https://doi.org/10.1007/bf00813199
Autor:
Magda S. Saleh
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 126:247-254
The dissociation constants of 3-hydroxy-2-carboxypyridine (3H2CP), 2-hydroxy-3-carboxypyridine (2H3CP), and 2-mercapto-3-carboxypyridine (2M3CP) were determined by potentiometric titration in 20 mole% ethanol/water, dimethylsulfoxide/water, N,N-dimet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53a6c8859de07580f63c44684dd9f30f
https://doi.org/10.1007/bf00816092
https://doi.org/10.1007/bf00816092
Autor:
Magda S. Saleh
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 126:621-629
1-amino-4-hydroxyanthraquinone (AMHA) is proposed as a spectrophotometric reagent for the determination of yttrium. The solution equilibria ofAMHA complexes with Y(III) have been studied spectrophotometrically in 50% (v/v) ethanol at 25°C and an ion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9389dda5cd194babe0e781e8d51fc3e2
https://doi.org/10.1007/bf00807151
https://doi.org/10.1007/bf00807151
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 125:233-240
The second stage dissociation constants of N-[Tris-(hydroxymethyl)methyl]-2-aminoethane sulphonic acid (TES) were determined at 25±0.1 °C by potentiometricpH-titration in different mixed solvent mixtures. The organic solvents used were methanol, et
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78decfc87ba493582143499e7abf7bda
https://doi.org/10.1007/bf00811308
https://doi.org/10.1007/bf00811308