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Assessment the resulting trace elements from the local generator exhaust in Baghdad Province- Iraq
تقدير العناصر النزره الناتجة من عوادم المولدات المحلية في محافظة بغداد

Authors: منتهى نعمة الثويني --- جنان حسين محمد --- عباس خليل ابراهيم
Journal: journal of kerbala university مجلة جامعة كربلاء ISSN: 18130410 Year: 2014 Issue: المؤتمر العلمي الثاني لكلية العلوم Pages: 100-105
Publisher: Kerbala University جامعة كربلاء

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Abstract

The current study was conducted in order to identify the level of some heavy metals hazardous to the public health of the population resulting from the solid residueresulting from the combustion of diesel fuel and gasoline generators are heavily used in the city of Baghdad and the extent of its contribution to the city's air pollution. Samples have been chemically manner incineration and using the technique of atomic spectrometer was detected concentrations of heavy metals. The results showed the presence of six elements of the heavy task of environmentally (V, Cd, Cr, Pb. Zn, Mn, T) and concentrations influential, according to measurements by WHO and the Organization of the environment , ranging general rates have between (2.1-10.2 ) and (1.2-8.5 ) part per million (ppm) for residues resulting from generators that use jazz and gasoline , respectively.

أجريت الدراسة الحالية من أجل التعرف على مستوى بعض المعادن الثقيلة الخطرة على الصحة العامة للسكان الناتج من المتبقيات الصلبة الناتجة من أحتراق وقود مولدات الديزل والبنزين المستخدمة بكثرة في مدينة بغداد ومدى مساهمتها في تلوث هواء المدينة. تم هظم النماذج كيميائيا بطريقة الترميد وباستخدام تقنية المطياف الذري تم الكشف عن تراكيز المعادن الثقيلة. أظهرت النتائج وجود سبعةعناصر ثقيله مهمة بيئياً (V, Cd, Cr, Pb. Zn, Mn,Tl ) وبتراكيز مؤثرة وفقا لمقاييس منظمة الصحة العالمية WHO ومنظمة البيئة إذ تراوحت المعدلات العامه لها بين (1.2 -8.5 ) و (2.1 -10.2) جزء لكل مليون جزء (ppm) للمتبقيات الناتجة من المولدات التي تستخدم الكاز والبنزين على الترتيب.

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Article
Galvanic Corrosion Behavior of Aluminum-Carbon Steel
سلوكية التآكل الغلفاني لالمنيوم - كاربون ستيل بأستخدام القطب الاستوائي الدوار

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Abstract

The galvanic corrosion behavior for Aluminum (Al), Carbon steel metals inaerated 3.5% NaCl solution has been investigated under turbulent controlled flow conditions at different temperatures using a rotating cylindrical electrode unit. Corrosion potential, potentiostatic polarization and galvanic corrosion experiments were carried out at 313,323 and 333 k under rotational speed of 0, 50,125 and 200 r.p.m Potentiostatic polarization studies have been performed individually forAluminum and Carbon steel and when they are coupled with an equal area (19.27 cm),of cathode to anode. It was found the mass transfer process as measured by the limiting diffusioncurrent density is not affected by the nature of the cathode material. For coupled metals, it is found that the corrosion process of Carbon steel and Alis under diffusion control since the corrosion rate increases with increasing rotationalspeed.The measured corrosion potentials of these metals give no exact information about thegalvanic corrosion but only show the direction of current flow. The zero resistance ammeter has been used to measure the variation of galvaniccurrent with time. The galvanic current was largely increased with increasing rotational speed(r.p.m.) and temperatures. The corrosion potential of (Al-Cs) coupled is larger than the corrosion potentialof the individual anode member, which means large amount of anodic polarization dueto this galvanic coupling. 2

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