This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
١١٧
٢٠٠٨) ١(العدد ) ٣٠( المجلد العلوم األساسیة سلسلة -مجلة جامعة تشرین للبحوث والدراسات العلمیة
Tishreen University Journal for Research and Scientific Studies - Basic Sciences Series Vol. (٣٠) No. (١) ٢٠٠٨
٢٠٠٨) ١(العدد ) ٣٠( المجلد العلوم األساسیةسلسلة _ مجلة جامعة تشرین للبحوث والدراسات العلمیة
Tishreen University Journal for Research and Scientific Studies - Basic Sciences Series Vol. (٣٠) No. (١) ٢٠٠٨
Accumulation of Some Trace Metals in Some Species of Sponges along the Syrian Coast
Dr . Ghiasse Abbasse* Dr. Izdhar Ammar** Dr. Amir Ibrahim***
(Received ٢٠٠٧ / ٩ / ٩. Accepted ٢٧/١٢/٢٠٠٧)
� ABSTRACT �
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 ( - ١٫٠ ) µg/g for Cd; Cu; Cr;Pb
while it was less than ١٫٠ µg/l in sea water. As for the mercury, the concentrations were
about ١٠ ng/g in sponges and in sea water they ranged between ( – ) ng/ l ; for zinc
the concentrations were too high: they ranged between ( – ) µg/g in sponges and
( ) 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.
* Assistant Professor, Department of Marine Chemistry, Higher Institute of Marine Research, Tishreen University, Lattakia, Syria. ** Assistant Professor, Department of Marine Biology, Higher Institute of Marine Research, Tishreen University, Lattakia, Syria. *** Professor, High Institute of Marine Research, Tishreen University, Lattakia , Syria.
Sciences Series. Tishreen University Journal. Bas ٢٠٠٨) ١(العدد ) ٣٠( العلوم األساسیة المجلد مجلة جامعة تشرین
١١٩
[ ]
[ ]
[ ]
[ ]Cr,Cd,Cu,Pb,Hg,Zn)
[ - ]
[ ]
[ ]
١٢٠
UNEP][
Sciences Series. Tishreen University Journal. Bas ٢٠٠٨) ١(العدد ) ٣٠( العلوم األساسیة المجلد مجلة جامعة تشرین
١٢١
blank
Cr,Cd,Cu,Pb,Hg,Zn)
Cr,Cd,Cu,Pb
nm nm mA
Zn C H -air
Hg-
AAS
ºCºC/secsecL/min
١٢٢
[ - ]
Calcarea Hexactinellidae Demospongia
[ - ]
Demospongia
Hyppospongia communisChama pacifica
Spondylus spinosusAmphiora sp.
Vermetus triqueterObelia geniculata
Chondrosia reniformis, Axinella polypoides, A. Verrucosa, Agelas