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Register a new userCharacterization of the humic acids extracted from different materials and study their complexes with montmorillonite
الحموض الهيومية المستخلصة من مواد متنوعة و دراسة معقداتها مع المونتموريللونيت Montmorillonite
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Damascus University ورقة بحثية
Publication date
2005
fields
Soil And Water
and research's language is
العربية
Created by
Shamra Editor
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درست مجموعة من الخصائص الكيميائية و الطيفية و الحرارية لحموض هيومية HA مستخلصة مـن مواد عضوية مختلفة: زبل المزرعة Fm و البيوغاز Bio و الكومبوسـت Com و نـوعين مـن الفرشـة الغابية، لأشجار صنوبرية (Pl) ، و متساقطة الأوراق (Dl) . و كذلك دراسة معقداتها الهيوميـة مـع فلـز المونتموريللونيت المشبع بالكالسيوم Montmorilonite-Ca باستخدام طرائق التحليل الوزني الحـراري Differential Thermal التفاضـلي الحـراري و التحليل TGA) Gravimetric Analysis Thermo) DTA) Analysis).
Some chemical, spectral and thermal characteristics of some humic acids (HA) extracted from: Farm manure (Fm), biogas(Bio), compost (Com), forest litters of pine (Pl) and of descendant forest (Dl), and their complexes with Camontmorillonite were studied by TGA and DTA analysis.
References used
Abou Nukta. F. 1969. The humus fractions characterization in chestnut soil. TCXA, N. 154, Moscow
Abou Nukta. F, and L. A. Douglas. 1983. Mineralogy of soils of Houran basin, 23 th Science Week, Syria
Bakhti, A.; Z.Derriche; A. Iddou and M.Larid. 2001. A study of the factors controlling the adsorption of Cr (III) on modified montmorillonites. Europ. J. Soil.Sci. 52: 683-692
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Syria has produced cotton oil with large quantity like many other
countries.This position provides an impetus to develop oleochemical industries,
such as: fatty acids, fatty methylester, and fatty alkyl ester. These products can
be sulfonated with
SO٣ or HSO٣Cl. As a result, the obtained products have
interesting properities due to their good detergency, lower sensitivity to water
hardness, rapid degradability, and good skin mildness properties. Therefore,
they can be used when mixed with other detergents or soaps for house hold
purposes.
Five derivatives of Formazn (FM1–FM5) were prepared through reaction between
benzaldehydphenylhydrazone with five diazonium salts by a reaction ratio of 1:1 in
alkaline medium. The hydrazone was prepared through the reaction between
phenylhydrazin
e and benzaldehydeby a reaction ratio of 1:1 in a slight acidic medium.
Crystals of formazans resulting from recrystalization were formed by using different
solvents and show variation of solubility among these formazans according to the kind of
the solvent and the kind of diazonium salt used. Their purity was studied by using thin
layer chromatography. The melting point of the prepared hydrazone and the resulting
Formazan complexes were complexes with lead (II), copper(II) and cadmium were
successfully prepared and studied by using UV and IR spectroscopy. These complexes
were used as ionophors and applied as electrically active materials in the preparation of
ion-selective membranes for the mentioned metal ions.
Essential oils from peels of 6 citrus species were extracted. The species were
lemon (Citrus limon), orange (C. sinensis), grapefruit (C. paradisi), pomelo
(C. maxima), mandarin (C. reticulata) and bitter lemon (C. aurantium) using
hydro-distillat
ion (Clevenger type).
In general Gram-positive bacteria were more sensitive to the oil
extracts tested than Gram-negative bacteria, and P. aeruginosa was the most
sensitive within the Gram-negative group.
Terebinth trees have been occupying a good part of the mount of Syrian
(abed elaziz, pelass). The Pistacia atlantica fruit, rich in oil, is used by local
inhabitants in many ways, few studies investigation of the P. atlantica fruit oil
of Syria ha
s been carried out,This study investigates the protein, ash, crude oil
and oil composition of P. atlantica with respect to total phenol, iodine value and
saponification value, in order to classify it among the other known edible oils
thenafter compare the oil composition with the oils of other Pistacia species.
The fruit of P.atlantica appears to be rich in oil. The major fatty acid in the
sample studied are oleic, linoleic, our results show that. The oil has a higher
content of unsaturated FA (oleic + linoleic = 72%). The oil can be classified as
an oleo-linoleic vegetable oil. The biochemical data showed an elevated MUFA
content (50-48%) which may constitute an important property against certain
pathologies for its nutritional and preventive virtues.
Flowers of Inula viscosa (L.) plant (Inula genus , Asteraceae family), locally known
as Taion, was collected from two different regions of Lattakia: the Jubt Barghal region (a
mountainous area), the Qaya region (a coastal area), and the essential o
il was extracted by
Hydrodistillation using the Cleveger apparatus , where the weight percentage of essential
oil stood at 1.26%,1.1% for both mountainous and coastal region ,respectively. The
Chemical composition of essential oil obtained from flowers of Inula viscosa (L.) was
analyzed by GC/MS .
The essential oil of the mountainous area contained 60 components, 58 components
of which were identified, that accounting for (97.98%) of total essential oil. The main
component controlling was:
7-methoxy-5-ethoxy-2,2-dimethyl-2H-chromene (43.43%)
The essential oil of the coastal region contained 33 components, 32 components of
which were identified, that accounting for (98.31%) of total essential oil. The main
components were:
Linalyl propionate (19.70%), Eugenol (15.11%), n-Eicosane (9.27%).
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