Document Details

Document Type : Thesis 
Document Title :
STUDY THE BIOACCUMULATION OF SOME PERSISTENT ORGANIC POLLUTANTS IN THE MARINE ENVIRONMENT OF JEDDAH COAST, RED SEA
دراسه التراكم الحيوي لبعض الملوثات العضويه المستديمه في البيئه البحريه لساحل مدينه جده على البحر الاحمر
 
Subject : Faculty of Marine Sciences 
Document Language : Arabic 
Abstract : In the last few decades Saudi Arabia has been transforming from rural stage to an urban and industrialized country. It has been classified as one of the biggest countries in oil production, exploration and exploitation all over the world. As a result of this transformation, industrial and human activities have increased dramatically in the coastal area of Saudi Arabia, especially in big cities like Jeddah city which is classified as one of the most important urban agglomerations on the eastern coast of the Red Sea. Different kinds of pollutants were introduced to the marine environment of the city such as polycyclic aromatic hydrocarbons (PAHs). PAHs categorized as one of the most dangerous and harmful substances to the environment and human health due to their toxicity, mutagenicity, and carcinogenicity. Despite the acuteness of the environmental activities in the city coast, to our knowledge, no specific survey for PAHs levels in the marine habitats and their environments of the city, the main aims of the present work is to study the levels, bioaccumulation, and probable sources of PAHs in some biota along Jeddah coast. The study covered the accumulation of PAHs in both marine animals and plants in Jeddah coast, Moreover, the study extended to wide area outside the city, where it covered nine mangrove stands spread along the eastern coast of Red Sea. Sediments and biota samples were collected from south Cornish (mangrove), Al-Arbaeen lagoon (snail) in Jeddah coast, and the eastern coast of Red Sea (mangrove). All samples were analyzed for PAHs and quantified using GC-MS. The average values for total PAHs in mangrove plant and sediments from south Cornish of Jeddah city and eastern coast of the Red Sea showed low to moderate values. The accumulation order for PAHs in the mangrove stand in Jeddah coast was: leaves (543.19 ng/g)> roots (255.55 ng/g)> sediments (134.17 ng/g); and the same order with much lower values was observed in the mangrove stands along Red Sea as following: leaves (23.43 ng/g)> roots (8.57 ng/g)> sediments (2.58 ng/g) due the different environmental conditions in the contaminated coastal area (Jeddah) and the rural clean area (eastern coast of Rea Sea). The average total PAHs of sediments and snails from Al-Arbaeen lagoon were 440.09 ng/g and 169.91 ng/g, respectively. Bio-accumulation factors were found more than one in most studied matrices. The bioaccumulation of PAHs was found selective in some matrices and low molecular weight PAH congeners were found to be the dominant and bio accumulated both in mangrove and snails. The diagnostic ratios for PAH origins indicate a mixture of petrogenic and pyrogenic sources in most of the studied matrices. 
Supervisor : Dr. Amr Abd Elaziz M. Elmaradny 
Thesis Type : Doctorate Thesis 
Publishing Year : 1440 AH
2018 AD 
Co-Supervisor : Prof. Mohsen El-Sherbiny 
Added Date : Monday, December 10, 2018 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
محمد الامين بشير احمدAhmed, Mohammed Elamin BashirResearcherDoctorate 

Files

File NameTypeDescription
 43849.pdf pdf 

Back To Researches Page