تحديد تركيز الفوسفور العضوي واللاعضوي في رسوبيات مصبي نهر الكبير الشمالي ونهر الحصين
Abstract
This study deals with spatial and temporal distributions of organic and inorganic phosphorus in sedimentary columns from Al-Kabir Al-Shimaliand Al-Hussain estuaries, during the period March 2013- February 2014. Organic phosphorus concentrations ranged between (2.0 - 207.6) µg/gin sediments from Al-Kabir Al-Shimali estuary, and from (1.7 –130.9) µg/gin sediments from Al-Hussainestuary. Sediment content from inorganic phosphorus ranged between (12.4 – 371.2)μg / g at sediments from Al-Kabir Al-Shimali estuary, and from (2.0 - 242.6)μg /g at Al-Hussain estuary. Granular composition of sediments did not play a significant role in the temporal and spatial distributions of organic and inorganic phosphorus. In general, organic and inorganic phosphorus concentrations decreased gradually from winter to summer, and from surface layers of the sedimentary column towards the deeper layers. The ratiobetween inorganic and organic phosphorus increasedfrom river into marine sediments. In addition, this ratio increased gradually as the sedimentdepthincreased, and was high in winter and low in summer. تتناول هذه الدراسة التوزع المكاني والزماني للفوسفور العضوي واللاعضوي في العمود الرسوبي لمنطقة مصبي نهر الكبير الشمالي ونهر الحصين خلال الفترة الممتدة من آذار2013 ولغاية شباط 2014. تراوح تركيز الفوسفور العضوي بينµg/g ((2.0 - 207.6في رسوبيات مصب نهر الكبير الشمالي، وبين µg/g (130.9-1.7 ) في رسوبيات مصب نهر الحصين، بينما تراوح محتوى الرسوبيات من الفوسفور اللاعضوي بين12.4- 371.2 )µg/g) في مصب نهر الكبير الشمالي، وبين242.6µg/g)- 2.0) في مصب نهر الحصين. لم يلعب التركيب الحبيبي للرسوبيات دوراً ملحوظاً في التوزع الزماني والمكاني للفوسفور العضوي واللاعضوي. تدرج بشكل عام تركيز الفوسفور العضوي واللاعضوي في الانخفاض بدأ من الشتاء إلى الصيف من جهة، وبالانتقال في عمق العمود الرسوبي من جهة أخرى. ازدادت نسبة الفوسفور اللاعضوي إلى الفوسفور العضوي في الرسوبيات المدروسة بالانتقال من المياه النهرية إلى المياه البحرية، كما ازدادت هذه النسبة تدريجياً مع ازدياد عمق الرسوبيات. كانت هذه النسبة أيضاً مرتفعة في فصل الشتاء ومنخفضة في فصل الصيف.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.