Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Sherien H. Ahmed"'
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 328:815-824
Solvent impregnated silica gel material was prepared for thorium recovery from its aqueous nitrate solutions using the neutral phosphine oxide extractant, cyanex-923 in toluene. This was achieved by adsorption of the extractant onto the solid phase i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::507dd8f0be11824b271409fdb1cf545c
https://doi.org/10.1007/s10967-021-07730-y
https://doi.org/10.1007/s10967-021-07730-y
Publikováno v:
Journal of Analytical Chemistry. 76:322-329
A new reagent, 1,4-dihydroxyanthraquinone (1,4-DHA), is described for the spectrophotometric determination of thorium(IV). Optimization of the formed thorium−1,4-DHA complex was performed by studying several parameters such as methanol concentratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::938b69ece68b17a30c62e6d480c00c71
https://doi.org/10.1134/s1061934821030072
https://doi.org/10.1134/s1061934821030072
Autor:
Sherien H. Ahmed
Publikováno v:
Al-Azhar Bulletin of Science. 31:19-32
A particular ion chromatographic method for yttrium determination after separation from dysprosium simultaneously with individual quantification of rare earth elements has been modified. Selective separation of yttrium from dysprosium plus the other
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec5915c7060df9bc8fc34cd359ea67f5
https://doi.org/10.21608/absb.2020.111464
https://doi.org/10.21608/absb.2020.111464
Autor:
Sherien H. Ahmed, Entesar M. El Gammal
Publikováno v:
Chemical Papers. 74:3491-3501
An ion chromatographic method for separation and determination of the sum of the rare earth elements in addition to the individual determination of some heavy metal ions has been developed. The separation has been performed on a mixed bed column, Ion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a107ae8e41107431299a1fa8ade5a585
https://doi.org/10.1007/s11696-020-01182-6
https://doi.org/10.1007/s11696-020-01182-6
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 324:87-96
Polyacrylic acid/polyaniline composite (a three-dimensional cross-linked hydrophilic chelating polymeric sorbent) was improved for promoted recovery of uranium ions from nuclear industrial effluent. The obtained sorbent was physically characterized u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce718ff07ebe4e0b98cf598024103389
https://doi.org/10.1007/s10967-020-07060-5
https://doi.org/10.1007/s10967-020-07060-5
Autor:
Entesar M. El Gammal, Sherien H. Ahmed
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 322:1975-1982
Four different analytical techniques were compared for their performance in direct determination of uranium in seven rock samples. These methods include: ion chromatography, laser fluorimetry, UV–Vis spectrophotometry and gamma spectrometry. The sa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bae1190083a3fa2955cc69866ac6960
https://doi.org/10.1007/s10967-019-06911-0
https://doi.org/10.1007/s10967-019-06911-0
Autor:
Sherien H. Ahmed, Entesar M. El Gammal
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 321:413-419
A new method is presented for measuring of uranium at low levels in crude phosphoric acid without preconcentration or complexing agents using Dionex DX-500 ion chromatograph. Two isocratic elutions namely; 7 mM PDCA (for eluting the interfering catio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a8e02da7a1ea20944705afd5c3321ba
https://doi.org/10.1007/s10967-019-06600-y
https://doi.org/10.1007/s10967-019-06600-y
Publikováno v:
Nuclear Sciences Scientific Journal. 7:189-203
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a30b6d04aa33591fbb8b5df002781f9a
https://doi.org/10.21608/nssj.2018.30739
https://doi.org/10.21608/nssj.2018.30739
Autor:
Sherien H. Ahmed
Publikováno v:
Nuclear Sciences Scientific Journal. 7:165-176
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29329a43942590cd8ef078064d5b5574
https://doi.org/10.21608/nssj.2018.30737
https://doi.org/10.21608/nssj.2018.30737
Publikováno v:
SN Applied Sciences. 1
This work concerned with the extraction of Th(IV) from aqueous solutions using natural cassitrite adsorbent natural tin oxide mineral (SnO2). The achieved maximum Th(IV) adsorption efficiency (99.2%) depends mainly on some effective parameters such a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7462a9812748e1a176cb12703601a2b7
https://doi.org/10.1007/s42452-019-1481-5
https://doi.org/10.1007/s42452-019-1481-5