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Article
Corrosions inhibitions of milds steelsin hydrochloricsacid solutionsby an isatinaniline compound

Author: Khalida.F. Al-Azawi
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2018 Volume: 36 Issue: 2 Part (B) Engineering Pages: 98-103
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Recently the researchers go to the eco-friendly corrosion inhibitors.In the present investigation, isatin which found in many plants, Isatis tinctoria,Calanthe discolor and Couroupita guianensis has been used as corrosioninhibitor. An isatin-aniline compound, namely ethyl 4-amino-N-(3-isatinyl)benzoate (AIB), was successfully synthesized in high yield and its inhibitionimpact on corrosion of MS (mild steel) in hydrochloric acid as corrosivesolution was examined via weight loss and Scanning electron microscopetechniques. The results acquired appeared that AIB has employ perfect as acorrosion inhibitor at low concentrations towards mild steel in HCl bath. Theimpact of temperature on the corrosion behavior of MS in corrosive bath withpresence of (250) ppm of AIB has been investigated in the range oftemperatures (303-333) K. The thermodynamic parameters for inhibitingprocess were investigated to find out the mechanism of corrosion inhibition ofMS acid bath.


Article
Synthesis and Characterization of New Complexes Fe(II), Co(II) and Ni(II) Ions with Azo Ligand Derived from 4-Aminoantipyrene

Authors: Khalida F. AL-Azawi --- Rashed Taleb Rasheed --- Liblab Sami Jassim
Journal: Al-Nahrain Journal of Science مجلة النهرين للعلوم ISSN: (print)26635453,(online)26635461 Year: 2016 Volume: 19 Issue: 4 Pages: 41-47
Publisher: Al-Nahrain University جامعة النهرين

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Abstract

The ligand (4-(7-hydroxy-4-methylcoumarin-8-ylazo)-1-phenyl-2,3-dimethyl pyrazol-5-one 4-yl) derived from 4-aminoantipyrine and 7-hydroxy-4-methyl coumarin. The synthesized ligand was characterized by 13C, 1HNMR, FT.IR and UV-Vis spectra. Complexes of Fe(II), Co(II) and Ni(II) with the ligand were prepared in aqueous methanol with a (1:2) M:L ratio. The prepared complexes have been characterized by using flame atomic absorption, FT.IR, UV-Vis spectra as well as magnetic susceptibility and conductivity measurements. On the basis of physicochemical data octahedral geometries were attributed for the complexes.

هيدروكسي 4 مثيل كيومارين - - - - ( حضر الليكند ) 4– - - - - - - - 8 ايل ازو( 1 فنيل 2,3 ثنائي مثيل بايروزول 5- - - - - اون 4 ايل( من 7 هيدروسي 4 ميثل كومارين و 4امينو انتي بارين و شخص الليكاند المحضر بواسطة اطيافالرنين النووي المغناطيسي و الاشعة تحت الحم ا رء و فوقالبنفسجية المرئية. حضرت معقدات الحديد و الكوبلت و –النيكل الثنائية الشحنة مع الليكاند في وسط الميثانول وبنسبةفلز: ليكاند (2:1) ، شخصت المعقدات المحضرة باستخداماطياف الاشعة تحت الحم ا رء و فوق البنفسجية المرئية و –تقنية الامتصاص الذري، فضلا عن قياسات الحساسيةالمغناطيسية و الت وصيلية الكهربائية و من النتائج المحصولعليها تم اقت ا رح الشكل الثماني السطوح للمعقدات المحضرة.


Article
Levels of Lead and Chromium Ions in Different Brands of Lipstick Sold at Local Markets in Iraq

Authors: Shaymaa H. Khazaa --- Khalida F. Al-Azawi --- Hamsa A. Eessa --- Abdulnasser M. AL-Gebori --- et al.
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2018 Volume: 36 Issue: 2 Part (B) Engineering Pages: 147-151
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Lead and Chromium ion samples of five commercial samplesof each of twenty brands of lipstick sold at locally markets in Iraq weredetermined by atomic absorption spectrophotometer. Samples ofdigested Lipstick were used, acid digestion method using acids HCl:HNO3 in ratio 1:3 were used before analysis. Average for analyzedsamples were Pb, 0.10-4.85 ppm; Cr, 0.18-5.2 ppm. Samples No.9 andNo.4 showed the least concentrations of Pb and Cr respectively. Thesevalues are not expected to be toxic to humans. However, exposure overlong periods might cause accumulation of the elements in the body andeven at low concentration; some metals could initiate allergic reactions.

Keywords

Samplesof Lipsticks --- Pb --- Cr and AAS

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