M
M.M. El-Defrawy
Researcher at Mansoura University
Publications - 36
Citations - 626
M.M. El-Defrawy is an academic researcher from Mansoura University. The author has contributed to research in topics: Atomic absorption spectroscopy & Chemistry. The author has an hindex of 9, co-authored 31 publications receiving 532 citations.
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Journal Article
Characterization and elimination of interfering effects in the determination of manganese by atomic absorption spectrometry
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Exploitation of an agro-industrial waste in eco-friendly clean-up: adsorptive removal of Congo red dye from aqueous media using chemically treated olive pomace
TL;DR: In this paper, a lignocellulosic solid residue generated in olive oil production was chemically treated using sodium hexametaphosphate (SHMP) and utilised as an effective adsorbent.
Journal Article
Characterization and elimination of the interfering effects on flame atomic absorption spectrometric determination of selenium
TL;DR: Les effets d'interference de quelques ions dans la determination du selenium par la spectrometrie d'absorption atomique sont etudies as mentioned in this paper.
Journal Article
Preconcentration and separation of total mercury in environmental samples using cellulose-hyphan (ion exchanger) and its determination by cold vapour atomic absorption spectrometry
TL;DR: In this paper, the authors decrit l'utilisation du cellulose-hyphan (cellulose 1-[2-hydroxyphenylazo]-2-naphtole) comme echangeur d'ions for la preconcentration and la separation du mercure apres digestion des echantillons.
Journal ArticleDOI
Chelation, spectroscopic characterization, biological activity and crystal structure of 2,3-butanedione isonicotinylhydrazone: Determination of Zr(4+) after flotation separation.
Othman A. Al-Fulaij,Bakir Jeragh,A.E.M. El-Sayed,M.M. El-Defrawy,Ahmed A. El-Asmy,Ahmed A. El-Asmy +5 more
TL;DR: The flotation technique is found applicable for the separation of micro amount of Zr(4+) using 10ppm of BINH and 1×10(-5)molL(-1) of oleic acid at pH 6 with efficiency of 98% with no interferences.