تراكم بعض المعادن النذرة في بعض أنواع الإسفنجيات في الشاطئ السوري
Abstract
الغرض الأساسي من هذا العمل هو اختبار أهمية بعض أنواع الإسفنجيات التي تعيش في الشاطئ السوري لمعرفة تلوث وسطها المائي ببعض المعادن النذرة ومقارنة التراكيز الموجودة في أنسجتها مع تلك الموجودة في المياه البحرية. تم تحديد تلك التراكيز في ثلاثة مواقع موزعة بين رأس البسيط وطرطوس. تراوحت تراكيز المعادن في نسج الإسفنجيات بين0.2 و 1.0 µg/g لكل من الكادميوم , الرصاص , النحاس , الكروم, بينما كانت في الوسط المائي المحيط أقل من 1.0 µg/l. كانت تراكيز عنصر الزئبق في الإسفنجيات حوالي. 010 ng/g وفي الوسط المائي ما بين 10.0 و 120.0 ng/l. وأخيراً فقد سُجلت تراكيز عالية للتوتياء بين 40.0 – 180.0 µg/g في نسج الإسفنجيات و بين 5.0 – 20.0 µg/l في المياه المحيطة. دلت معظم النتائج على المقدرة الكبيرة للأنواع الإسفنجية المدروسة على تجميع المعادن النذرة من أوساطها المائية البحرية, كما كان واضحاً التغير في تراكيز هذه العناصر في النسج الإسفنجية ما بين المناطق النظيفة (البسيط) والمناطق الأقل نظافة (شاطئ طرطوس).
The aim of the present work is to test the value of some species of sponges living in Syrian coast as bio-indicators of trace metals contamination and compare results with concentration found in water. The concentrations of trace metals in sponges and water were determined in three sites distributed between Ras Al-bassit and Tartous coast. The concentration of metals in sponges ranged between ( 0.2 - 1.0 ) µg/g for Cd; Cu; Cr;Pb while it was less than 1.0 µg/l in sea water. As for the mercury, the concentrations were about 10 ng/g in sponges and in sea water they ranged between (10 – 120) ng/ l ; for zinc the concentrations were too high: they ranged between (40 – 180 ) µg/g in sponges and
( 5 -20 ) µg/l in sea water. Most results indicate the high capacity of sponges to accumulate trace elements form sea water; and the response of sponges to the changes of trace metals concentration was found to be significant between cleaner and clean area.
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to the Tishreen University Journal -Basic Sciences Series
Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal -Basic Sciences Series . The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal -Basic Sciences Series Publisher
journal uses a CC BY-NC-SA license which mean
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
- The licensor cannot revoke these freedoms as long as you follow the license terms.
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes.
- ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.