Assessment of Heavy Metals Contamination in the Mediterranean Sea along Gaza Coast: A case Study of Gaza Fishing Harbor

الموضوعات

علوم بيئية

الملخص

The present study investigated the concentrations of Mn, Cu, Zn, Ni, Co, Pb and Cd in seawater and the marine sediments of Gaza fishing harbour and surrounding area. The same metals were measured in the muscles of fish species (Grey mullet) that were collected from the study area. The study also identified the major physical and chemical properties of the seawater. Eight sampling stations were selected to conduct the study in Gaza Fishing harbour along Gaza coast. The samples were taken from the study stations at once every two months from September of 2013 until March 2014. The samples were taken in September, November 2013 and March 2014. All samples were analyzed in the Ministry of health (MoH) laboratories-Gaza. All metals were determined and analyzed by Flame Atomic Absorption Spectrophotometer.The results showed that the mean concentrations of heavy metals (Mn, Cu, Zn, Ni, Co, Pb and Cd) were 0.067 mg/l, 0.063 mg/l, 0.028 mg/l, 0.199 mg/l, 0.071 mg/l, 0.159 mg/l and 0.074 mg/l respectively in filtered seawater. Whereas, the mean concentrations of (Mn, Cu, Zn, Ni, Co, Pb and Cd) in marine sediments were 42.42mg/kg, 18.08mg/kg, 26.55mg/kg, 8.04mg/kg, 4.2mg/kg, 7.27mg/kg and 1.17mg/kg respectively. Mean concentrations of these metals in marine sediments showed significant variations and they were significantly higher than their levels in the seawater. In fish muscles tissues (Grey mullet) the mean concentrations of (Mn, Cu, Zn, Ni, Co, Pb and Cd) were 0.90µg/g, 13.15µg/g, 25.87µg/g, 1.10µg/g, 0.68µg/g, 1.82µg/g and 0.27µg/g respectively. The results of this study showed that the metal concentrations in tissues of fish muscles were higher than seawater and lower than marine sediments. The highest concentrations of metals in the muscles of the studied fish species were detected for zinc (13.56-40.43 µg/g) and the lowest were for cobalt (nd-2.93 µg/g) and cadmium (0.02-0.51 µg/g). The heavy metal concentrations in most fishes were found to be below the limits proposed for fish by various international standards and guidelines such as EU (2001), WHO (1989) and Turkish guidelines. Physical and chemical properties of seawater recorded several values ranged between 17.4-28 ?C, 7.57-8.15, 55.8-60.6 µs/cm, 1.52-13 NTU and 2.94-7.2 mg/l for water temperature, pH, electrical conductivity, turbidity and dissolved oxygen respectively in the study area.Results showed that there are differences in heavy metals concentrations between the different eight sites, these differences in most of heavy metal concentrations were not statistically significant among most of the locations. Several concentration values of Cu, Mn, Ni, Zn, Pb and Cd in the seawater and marine sediments samples were found to be higher than the limit values as compared with EPA, WHO, Australian, Turkish and Israeli guidelines and standards for heavy metals level. The heavy metals determined in the muscles of the studied fish species were lower than the maximum levels and guidelines values described in the literature.Gaza fishing harbour is one of the most polluted areas due to the adverse effect of effluents from land-based sources. Domestic untreated wastewater discharges and fishing activities in the harbour area may possibly are the major source of the observed higher levels of heavy metals contamination. However, the Gaza coastal management strategy was proposed to protect the coastal environment and marine waters from further deterioration. Further research studies and periodical monitoring of heavy metals level in seawater, sediment and fish tissues along Gaza strip coastal water and environment are recommended.

روابط وملفات

التعريف والنوع

رقم الوثيقة

f9ddb49e-5249-4457-8fb8-ff5976ea4814

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

2102822_1.pdf

بيانات النشر

ترجمة العنوان

تقييم تلوث مياه ساحل قطاع غزة بالمعادن الثقيلة في البحر المتوسط: حالة دراسة مرفأ صيد غزة

ألقاب المؤلفين

[{"name_ar":"Adnan M. Aish","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Hisham Naif Wafi","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"Hossam A. Zaqoot","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

Assessment of Heavy Metals Contamination in the Mediterranean Sea along Gaza Coast: A case Study of Gaza Fishing Harbor

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

Adnan M. Aish, Hossam A. Zaqoot

الإعداد

Hisham Naif Wafi

الاقتباسات الببليوغرافية