Journal of Ecology and Natural Resources ISSN: 2578-4994 MEDWIN PUBLISHERS Commited to Create Value for Researchers Concentrations of Total Petroleum Hydrocarbons N-Alkanes in Surface Seawater from The Red Sea Coast of Hodeidah City, Yemen J Ecol & Nat Resour Concentrations of Total Petroleum Hydrocarbons N-Alkanes in Surface Seawater from The Red Sea Coast of Hodeidah City, Yemen Khirbash BA 1 , Al Salehi MA 2 , Al-Hagibi HA 2 * and Al Shwafi NAA 2 1 Department of Earth Science, Faculty of Petroleum and Natural Resources, Sana’a University, Yemen 2 Department of Environmental Science, Faculty of Petroleum and Natural Resources, Sana’a University, Yemen Corresponding author: Hagib A Al-Hagibi, Department of Environmental Science, Faculty of Petroleum and Natural Resources, Sana’a University, Yemen, Email: hagib_2002@hotmail.com Research Article Volume 7 Issue 4 Received Date: September 02, 2023 Published Date: November 13, 2023 DOI: 10.23880/jenr-16000358 Abstract Field work has been carried out to identify the occurrence of oil and oil by- product pollution from the Red Sea coast of Hodeidah city, was evaluated from December, 2021 to June, 2022. Surface seawater samples were collected from four stations and extracted using standard methods. The extracts were subsequently analyzed by gas chromatography-flame ionization detection. EPH aliphatic hydrocarbon standard 14 components (C9 – C36), high performance liquid chromatographic (HPLC) grade solvents and analytical grade reagents used for this work. The total concentration of aliphatic hydrocarbons n-alkanes (TPH) in surface seawater samples ranged from 9400.5 μg /l at Hodeidah harbor to 2409.7 μg /l at Hodeidah Power Plant in winter and from 4880.9 μg /l at Hodeidah Harbor to 1109.1 μg /l at Hodeida Power Plant in summer. This pollution is a consequence of localized oil operation and /or heavy ship traffic. The investigations in These locations can serve as a reference for future evaluations and studies. Keywords: Total Petroleum Hydrocarbons, N-Alkanes-Surface Seawater, The Red Sea Coast of Hodeidah City Introduction The onset of significant oil pollution can be traced back to the adoption of oil as a primary fuel source for maritime transport. This pollution escalated as industrial demands necessitated the transportation of goods across seawater bodies [1]. With the global economy increasingly reliant on international trade, the volume of goods transported between nations has surged. This upsurge has given rise to two principal sources of oil pollution: deliberate discharges and accidental spills of crude oil and oil derivatives [2]. More than half of the world’s proven oil reserves are located in the Arabian region, where exploration, production, processing, and transportation are concentrated. The majority of oil extracted from both onshore and offshore wells is earmarked for export (with less than 10% allocated for local refining and consumption). Annually, over 100 million tons of oil traverse the Red Sea, with the Arabian Sea and Gulf of Aden handling sixty percent of global oil shipments [3]. This regional dependency on oil and petrochemical industries has made ports focal points of activity. Despite their pivotal role in the regional economy, the production