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Register a new userGeochemistry some of heavy elements in rocks, sediments, and soils of Jableh sheet 1: 50,000 / Syria / and their environmental impact
جيوكيمياء بعض العناصر الثقيلة في صخور, رسوبيات, وترب رقعة جبلة 1:50000 /سورية/ وأثرها البيئي
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Tishreen University مقالة
Publication date
2021
fields
Geology
and research's language is
العربية
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يركز البحث على تحديد تركيز بعض العناصر الثقيلة (الرصاص, الزنك, النحاس, والكادميوم) في أنواع مختلفة من الصخور, الترب, والرسوبيات في رقعة جبلة الجيولوجية. تم تحديد المحتوى الفلزي باستخدام جهاز الانعراج الأشعة السينية (XRD), وتحديد تركيز العناصر الثقيلة باستخدام جهاز البولاروغراف الموجودين في مخابر هيئة الطاقة الذرية السورية في دمشق.
This research focuses on determining the concentration of some heavy elements (lead, zinc, copper, and cadmium) in different types of rocks, soils, and sediments in geological sheet of Jableh. The mineralogical content was determined using the X-ray diffraction technies (XRD), and the concentration of the elements was determined using the wave polarograph device in the laboratories of the Syrian Atomic Energy Authority in Damascus.
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تضمنت الدراسة الحالية تعيين التركيز التراكمي للعنصرين الثقيلين الكادميوم و الرصاص باسـتخدام
جهاز طيف الامتـصاص الـذري، فـي أنـسجة الـدودة الـشريطية De inarmata Postgangesia
2003, Mariaux and AlKallak, Chambrier و بعض من أعضاء مضيفها النهائي من أسـم
اك
الجري glanis Silurus التي اِصطيدتْ من نهر دجلة في منطقة سد الموصل، محافظة نينوى.
أظهرت النتائج الحالية وجود فروقات إحصائية عند مستوى معنوية (05.0) في تراكيـز كـل مـن
الكادميوم و الرصاص في كل من الكبد، و الكليتين، و الأمعاء، و الغلاصم و العضلات للأسماك المصابة و غير المصابة بالديدان الشريطية، و بلغ تركيز الكادميوم و الرصاص في الدودة الـشريطية 24.24 و 87.787
ميكروغراماً/غرام على التوالي.
The concentrations of Copper (Cu) and Zinc (Zn) in samples of some spices
available at some local markets in Syria were determined, after nitric digestion, using
Atomic Absorption Spectrometry. The study showed differences in metal concentrations
according to the edible part. Studied heavy metals were present in all samples at different
levels. The concentration of Copper (Cu) and Zinc varied from trace to higher
concentration. The maximum level of Copper (Cu) in the spices samples was 0.668 mg/kg.
The maximum level of Zinc (Zn) in the spices samples was 2.523mg/kg. The analytical
results obtained for the heavy metals indicate that the Copper and Zinc were present in all
samples at concentration well below the acceptable daily intake recommended by the
World Health Organization.
The concentrations of copper (Cu) and zinc (Zn) in samples of some cereals available at
local markets in Syria weredetermined, after nitric digestion, using Atomic Absorption
Spectrometry. The study showed that the heavy metals were present in all
samples at different
levels. The concentration of heavy metals varied from trace to higher concentration.
The maximum level of copper (Cu) in the cereal samples was 0.426 mg kg-1 on dry
weight basis, where the maximum level of zinc (Zn) in the cereal samples was 2.325mg mg kg-
1 on dry weight basis. The analytical results obtained for the heavy metals indicate that the
copper and zinc were present in all samples at concentration well below the acceptable
concentration recommended by the World Health Organization.
We present in this study accumulate of two heavy metals (Fe - Cu) in the tissues of
flowers , leaves , stems and roots of Lamium moschatum Mill.
The study showed that the plant accumulated (Fe - Cu) in different concentrations ,
with an increase i
n the concentration of (Fe) in all samples specially in roots . The highest
concentration of (Cu) was in flowers (1669.23 mlg/kg) , and for (Fe) was in roots (4539.5
mlg/kg) .
The results showed a convergency in the concentrations of (Cu) in the parts of plant
for the same sample (432.62 - 490.75 - 353.409 - 272.73 mlg/kg) in flowers , leaves , stems
and roots in order . but the concentrations of (Fe) in roots was higher than that in flowers ,
leaves and stems for the same sample .
In sample -5- the value of (Fe) in roots was (1124.91 mlg/kg) but in flowers , leaves
and stems at the same sample was ( 234.83 - 218.82 - 205.24 mlg/kg ) in order.
This study was conducted to determine some heavy minerals in different types of
canned meat sold in the domestic market. Most of those cans were imported and processed
in different countries and they have different brands. The chosen samples after
ashing were
prepared by using concentrated extra pure Nitric and Hydrochloric acids .The ratios of the
minerals )pb , Cd , Ni , Zn , Cu , Mn , Fe ( were determined by Atomic Absorption
Spectrophotometry , and the content was expressed as (p.p.m) wet weight. It was observed
that the levels of Lead, Iron, and Cadimum, in all different samples were higher than the
permitted limlts according to the Syrian Standards . The Cu level in both , tuna and sardine
was within the permitted limits, but it was higher in the chicken Lunchoen. The level of
Zinc was within the permitted limits according to the Syrian standards. The highest ratio of
Lead was observed in the sardine imported from Morocco which was 8.765 p.p.m and in
the Lunchoen processed in Syria which was 5.18 p.p.m ,and both ratios are much higher
than the permitted limits according to the Syrian Standards.
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