صنعنا أساس شيف (H2L) الذي يحتوي على ذرات أكسجين- كبريت – آزوت، و ذلك بتفاعل α.َα-
بيس (5 -برومو-2 -فينوكسي كربوكسي الدهيد)1.4 -كسيلين مع أمينو ثيو فينول. درسنا إمكانية نقل
أيون النحاس عبر غشاء من الكلورفورم الحاوي على حامل من مرتبطة أساس شيف المصنع من قبلنـا
(H2L) . درست البارامترات المؤثرة في عملية النقل كتركيب الطور المـستقبل، و pH الوسـط للطـور
المانح، و تركيز المادة الحاملة في الغشاء و تركيز EDTA في الطور المستقبل و تأثير درجـة الحـرارة
و الزمن. وصلت كمية النحاس المنتقلة عبر الغشاء السائل بعد زمن 45 دقيقة إلى 100 % عنـد درجـة
الحرارة 58 مئوية.
New Schiff base (H2L) containing nitrogen-sulfur-oxygen atoms was
synthesized by reaction of α,α'-bis(5- Bromo-2-carboxyaldehyde phenoxy)-1.4-
xylene with aminothiophenol. Transport of copper ion across a bulk
chloroform membrane containing Schiff base ligand (H2L) as carrier has been
studied. The parameters influencing the transport efficiency such as
composition of receiving phase, pH of the feed phase, carrier concentration in
the membrane, EDTA concentration in the receiving phase, effect of
temperature and time dependency of the process were studied and discussed.
The amount of copper transport through the liquid membrane after 48 min.,
arrived to 100% at temperature 58°C.
References used
Jonsson, J. A and Matiasson, L. (1992). Supported liquid membrane techniques for sample preparation and enrichment in environmental and biological analysis. TrAC, 11, 106
Safavi, A and shams, E. (1999). Selective transport of silver ions through bulk liquid membrane using Victoria blue as carrier . Talanta, 48, 1167
Chaudry, M. A. Amin, S. and Malik, M. T. (1996). Tri-n-octylamine- Xylene-Based Supported Liquid Membranes and Transport of Ce (IV) Ions Sep. Sci. Technol, 31, 1309
In this research we have synthesized a new macrocyclic Schiff base
containing N2O5 donor atomes which was prepared by reaction of 1,7- bis (6-
methoxy - 2 - formyl phenyl)-1,4,7,10,13-penta oxa tridecane with 4',4- oxy
dianiline.
Separation with solvent extraction of Cu(II), Hg(II), and Cr(III) from
aqueous solution using the ligend (HL) as a new extractant has been studied.
The new acyclic Schiff Base (HL) was synthesized by reaction of 5-bromosalicylaldehyde
with 2-(2-Am
A new acyclic Schiff Base(II), containing nitrogen-oxygen donor atoms was
synthesized by reaction of 1,2-Bis (5-bromo-2-formyl-phenoxy) ethane with 2-
(2-Aminoethyl)pyridine and characterized. The liquid-liquid extraction of
transition metals such
In this research we have synthesized a new macrocyclic Schiff base (II)
containing nitrogen- oxygen donor atoms which was designed and synthesized
by reaction of: 1,4– bis (6',6'- methoxy -3- formyl phenyl)-1,4- dioxa butane (I).
Identification of
This work was focused on the synthesis of tetradentate Schiff bases which
were prepared by condensation of salicylaldehyde with 1,4-diaminobenzene
and 1,3-diaminobenzene. The Schiff base ligands were checked by different
spectral technique (GC-MS,