Iraqi National Journal Of Chemistry

The Reversed Phase High Performance Liquid Chromatography (RP-HPLC) has been used for the separation of Poly aromatic hydrocarbons (PAHs) by using column Reprosil C18 which was found to be a suitable one for this purpose.
The result showed that using mobile phase of (Acetonitrile – water) Reversed Phase HPLC, flow rate of (1.2 ml/min), column temperature (30 Cº) , using fluorescence Detector and wave length of (Ex.365 - Em.355), give a complete separation with a good resolution. The total separation time was less than 20 min. The result of the study showed that the vegetables of Salahuddin Governorate were polluted by poly aromatic hydrocarbons (PAHs) in deferent place where samples taken because of drainage of heavy water, industrial trash and trash of oil colanders.
Naphthalene, Acenaphthylene, Fluorene,Acenaphthene, Phenanthrene, Anthracene, Fluoranthene, Pyrene, Chrysene, Benzo(a)anthracene, Benzo(b)Fluoranthene, Benzo(k)Fluoranthene, Dibenzo(a,h)Anthracene, Indeno(1,2,3-cd)Pyrene Benzo(a)pyrene and Benzo(g,h,i)perylene. .

A novel bidentate Schiff bases has been prepared from the condensation of 1,4-bis-(aminomethyl)cyclohexan with 2,4-dihydroxyacetophenon and 2,4-dihydroxybenzaldehyde. Schiff base A and B and their metal complexes were characterized via UV-Visible, FTIR and NMR. The metal complexes are expected to be octahedral in geometry based on physicochemical and spectroscopic analyses. New resins PoA and PoB were prepared by mixing schiff base A and B respectively with MDI, thermogravimetric analysis of resins proved that the PoA and PoB were thermally stable up to 209oC and 291oC respectively , and the study of loading capacity of resins towards transition metals showed that the PoA and PoB had high selectivity (more than 90%) toward lead and zinc respectively.

Removal of toxic heavy metals and organic pollutants from contaminated water is of great interest in the field of water handling. Organoclays have unique adsorption behavior towards hydrophobic organic contaminants. Thus, the present study focus on separation of Cr(VI) from Cr(III) and p-nitrophenol (PNP) from the aqueous solutions using new organokaolin synthesized for the first time from local clay. The method is based on using Iraqi’s kaolin in the presence of hexadecyltrimethyl ammonium bromide as surfactant. Infrared spectroscopy and x-ray diffraction are employed to characterized innovated clay. The optimum adsorption conditions for the removal of Cr(VI) and PNP were: mass of organokaolin, 0.5 g; pH, 1 & 11, Temp. 15 & 35 C; contact time, 80 min for the removal of Cr(VI) and p-nitrophenol, respectively. Under the optimum conditions, removal rate of 96%for the adsorption of Cr (VI) and PNP was achieved. Higher value of r² refers to the goodness of fitting of Langmuir equation rather than Temkin and Freundliche equations for the sorption of Cr(VI) on the organokaolin. From the calculated thermodynamic parameters, ΔG, ΔH and ΔS values, the adsorption process has been found endothermic in nature. The developed method was applied successfully for the analysis of 15 water samples collected from areas of Baghdad. Good recoveries were obtained ranging from 97.4-101.1% (RSD < 2.15%) and 97.8-100.1% (RSD= 1.8%) for Cr(VI) and PNP, respectively.

This study includes the investigation of the hypoglycemic effect by assay the blood glucose levels and the glucoregulatory enzymes such as Aldolase A, glucose-6-phosphate dehydrogenase, lactate dehydrogenase and Total antioxidant capacity of silver nanoparticles prepared from peel Raphanus sativus L extract in diabetic rats. The experimental groups (30 rats) were equally divided into five groups six rats for each group:
G1 : control group (treated with normal saline) ,G2: diabetic groups induced by alloxan in a single dose (150 mg/kg b.w ),G3: Diabetic groups (alloxan 150 mg/kg b.w intraperitoneal injection for 60 days of 100ppm of Nanoparticles extract,G4: preventive group(intraperitoneal injection for 60 days of 100ppm of Nanoparticles + then induces diabetic by alloxan in a single dose (150mg/kg b.w ),G5: Control treated with 100 ppm of nanoparticles for 60 days. The results shown a significant decreased in the levels of blood glucose, glucose-6-phosphate dehydrogenase and lactate dehydrogenase for the treated group(G3) and the preventive group(G4) when compared with diabetic group while the Aldolase A activity and total Antioxidant capacity (TOAC) were significantly increased for the treated group(G3) and the preventive group(G4) when compared with diabetic group.