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Register a new userتقدير كمية وأشكال بعض العناصر الثقيلة في أتربة منطقة الرميلة في مدينة جبلة - محافظة اللاذقية
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Tishreen University رسالة ماجستير
Publication date
2014
fields
Agricultural Engineering
and research's language is
العربية
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أصبح تأثير الانسان على البيئة واسع النطاق وقد أدى إلى تغيرات بيئية كثيرة بعضها غير عكوسة ففي حين تكون التغيرات الجيولوجية والبيولوجية لسطح الأرض بطيئة عادة إلا أن الانسان قد تسبب في تغيرات سريعة في العقود الأخيرة
No English abstract
References used
Alloway .B . J 1995 Heavy Metals in Soils , Second edition, Blackie, Glasgow P 368
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This research was carried out during 2014 - 2015. The research aimd to describe
some chemical characteristics of the river's water used for irrigation, chemically compare it
with the Syrian Standards Specifications in terms of salt quantity and qua
lity and Cd and B
concentrations, water samples were taken from four observation points along the river:
A (domestic), B (industrial), C (mixed) and D (estuary), also Soil samples from the river
edges were also analyzed. The findings revealed that the EC value in B was 0.61 mg/l i.e.
less than those of others, with significant difference 0.72, 0.74, 0.73 mg/l, respectively.
The study also showed a significant increase in B and C concentration by 0.48 and 0.49
mg/l, respectively, compared with A and D by 0.4 mg/l each. A significant increase in Cd
concentration was noticed for B, C and D by 0.73, 0.88 and 0.75 mg/l vs. A 0.67 mg/l.
However, Cd concentration in the river water in all seasons and sites was excessive and
higher than the permissible limit for water discharge into seas estimated at 0.05 mg/l,
whereas the other parameters were lower than the permissible limits according to the
Syrian Standards. The effect of water pollution on soil showed a significant increase in EC
for B by 1.01 dS/m than others. The increase was also more significant in subsurface layer
than surface one by 0.45 and 0.62 dS/m, respectively. In addition, the findings
demonstrated a significant increase in Cd for C (2.67 mg/kg) than other points. The
increase in Cd concentration was more significant in the surface layer (2.648 mg/kg) than
the subsurface one (2.631 mg/kg), and this concentration was lower than the normal range
of soil content from Cd (3 ppm).
تعد التربة والماء أهم المصادر الطبيعية غالية الثمن التي يستخدمها الإنسان في الزراعة و التمدن ولكن أصبحت عرضة للتلوث على نحو خطير بسبب الأنشطة البشرية حيث ربط الباحثون المشاكل البيئية بالتقدم الصناعي الهائل الذي بدأ في العام 1950 وكذلك بالأنشطة الزراعية والذي بدأ في النصف الأول من القرن العشرين
This study deals with identifying some heavy metals (Pb,Zn,Ni) concentration in the recycledsewage in Latakia Countryside which is resulting from three treatment plants distributed over (Hebbeit, Al-Harah, MarjMoairban),2011.This research uses the El
ectro Thermal Atomization-Atomic Absorption Spectrometry (ETA-AAS) technique in determining of heavy metal elements mentioned above. This research shows a higher concentration of Zn-element (2.798 mg/L) in all treatment plants and in all seasons compared with the concentration of other elements, while Ni and Pb have recorded low concentrations (0.351, 0.243) mg/ℓ, respectively. The statistical study has demonstrated that there is a correlation varying from positive high to positive low, and sometimes to negative highs and lows, this gives clear indications for resources of pollution.
Amount of dusts deposition were determined amount of dusts
deposition on Olives leafs and green houses in surrounding of
cement manufactory in Tarrtous. Concentrations Zn, Fe,Ni,Cu,Mn
Were determined. The results showed that dusts amount
demonstr
ates differ according to direction and distance of
manufactory. It decay whenever moving away excluding southwest.
It is signal to prospective finding another sources for
immersion . Iron was the highest concentration followed by Nickel,
Zinc and lastly copper. That a shows the contribution of cements
manufactory Emission in air pollution. Therefore compounds of
these elements fall down on components of ambient environment
inclusively Olives leafs and green houses.
القدرة التراكمية للأوكاليبتوس المنقاري والعفص الشرقي لبعض العناصر الثقيلة في شارع الشاطئ الاأزرق- مدينة اللاذقية
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