Tarek Othman Said is a Professor of Marine and Analytical Chemistry at the National Institute of Oceanography and Fisheries (NIOF), Alexandria, Egypt. Late Dean of the National Institute of Oceanography and Fisheries (NIOF), Mediterranean Branch, Alexandria, Egypt. With over 35 years of experience, he specializes in environmental monitoring, marine pollution, and analytical techniques for detecting heavy metals, hydrocarbons, and pesticides. He has played a key role in developing NIOF’s infrastructure and academic programs in Egypt and Saudi Arabia. Dr. Said has published around 100 research papers and serves on the editorial boards of several scientific journals. His work focuses on pollution assessment, risk analysis, and sustainable environmental solutions.Gehan Mohamed El Zokm is a professor of marine and analytical chemistry at the National Institute of Oceanography and Fisheries (NIOF), Alexandria, Egypt. Her research covers various topics in analytical and environmental chemistry, with a focus on water quality, sulfide models, sulfur fractionation, halogen chemistry, speciation of heavy metals, eutrophication, organic pollutants in marine ecosystems, and predicting the worst-case scenario for chronic mixed ecotoxicity of different pollutants. She is a professional in statistical analysis for monitoring programs. She leads multiple research groups and has authored over 70 publications and four books. Dr. El Zokm is actively involved in supervising graduate research, arbitration of master’s and doctoral theses, reviewing manuscripts for top publishers, and providing environmental consultancy services. Her work also includes the extraction of natural products, surfactant chemistry & ecotoxicity, and advanced water treatment methods. Her study emphasizes eco-sustainable strategies, the associated challenges, and a circular economy that leverages the marine environment.

• Chemical Structure, Types, Applications, Occurrence of OMCs.- Extraction Methodology of OMCs [Stability, Evaluation of the extraction recoveries, Improving the reliability of speciation analysis].- Fate and behaviour of OMCs in the marine environment.- Mechanisms and Models for OMCs' Chemical Behaviour and Ecotoxicology.- Worldwide Distribution of OMCs.- Control (Prevention) of OMCs, Future and Sustainability.

Tarek Othman Said is a Professor of Marine and Analytical Chemistry at the National Institute of Oceanography and Fisheries (NIOF), Alexandria, Egypt. Late Dean of the National Institute of Oceanography and Fisheries (NIOF), Mediterranean Branch, Alexandria, Egypt. With over 35 years of experience, he specializes in environmental monitoring, marine pollution, and analytical techniques for detecting heavy metals, hydrocarbons, and pesticides. He has played a key role in developing NIOF’s infrastructure and academic programs in Egypt and Saudi Arabia. Dr. Said has published around 100 research papers and serves on the editorial boards of several scientific journals. His work focuses on pollution assessment, risk analysis, and sustainable environmental solutions.Gehan Mohamed El Zokm is a professor of marine and analytical chemistry at the National Institute of Oceanography and Fisheries (NIOF), Alexandria, Egypt. Her research covers various topics in analytical and environmental chemistry, with a focus on water quality, sulfide models, sulfur fractionation, halogen chemistry, speciation of heavy metals, eutrophication, organic pollutants in marine ecosystems, and predicting the worst-case scenario for chronic mixed ecotoxicity of different pollutants. She is a professional in statistical analysis for monitoring programs. She leads multiple research groups and has authored over 70 publications and four books. Dr. El Zokm is actively involved in supervising graduate research, arbitration of master’s and doctoral theses, reviewing manuscripts for top publishers, and providing environmental consultancy services. Her work also includes the extraction of natural products, surfactant chemistry & ecotoxicity, and advanced water treatment methods. Her study emphasizes eco-sustainable strategies, the associated challenges, and a circular economy that leverages the marine environment.

• Chemical Structure, Types, Applications, Occurrence of OMCs.- Extraction Methodology of OMCs [Stability, Evaluation of the extraction recoveries, Improving the reliability of speciation analysis].- Fate and behaviour of OMCs in the marine environment.- Mechanisms and Models for OMCs' Chemical Behaviour and Ecotoxicology.- Worldwide Distribution of OMCs.- Control (Prevention) of OMCs, Future and Sustainability.

Tarek Othman Said is a Professor of Marine and Analytical Chemistry at the National Institute of Oceanography and Fisheries (NIOF), Alexandria, Egypt. Late Dean of the National Institute of Oceanography and Fisheries (NIOF), Mediterranean Branch, Alexandria, Egypt. With over 35 years of experience, he specializes in environmental monitoring, marine pollution, and analytical techniques for detecting heavy metals, hydrocarbons, and pesticides. He has played a key role in developing NIOF’s infrastructure and academic programs in Egypt and Saudi Arabia. Dr. Said has published around 100 research papers and serves on the editorial boards of several scientific journals. His work focuses on pollution assessment, risk analysis, and sustainable environmental solutions.Gehan Mohamed El Zokm is a professor of marine and analytical chemistry at the National Institute of Oceanography and Fisheries (NIOF), Alexandria, Egypt. Her research covers various topics in analytical and environmental chemistry, with a focus on water quality, sulfide models, sulfur fractionation, halogen chemistry, speciation of heavy metals, eutrophication, organic pollutants in marine ecosystems, and predicting the worst-case scenario for chronic mixed ecotoxicity of different pollutants. She is a professional in statistical analysis for monitoring programs. She leads multiple research groups and has authored over 70 publications and four books. Dr. El Zokm is actively involved in supervising graduate research, arbitration of master’s and doctoral theses, reviewing manuscripts for top publishers, and providing environmental consultancy services. Her work also includes the extraction of natural products, surfactant chemistry & ecotoxicity, and advanced water treatment methods. Her study emphasizes eco-sustainable strategies, the associated challenges, and a circular economy that leverages the marine environment.

• Chemical Structure, Types, Applications, Occurrence of OMCs.- Extraction Methodology of OMCs [Stability, Evaluation of the extraction recoveries, Improving the reliability of speciation analysis].- Fate and behaviour of OMCs in the marine environment.- Mechanisms and Models for OMCs' Chemical Behaviour and Ecotoxicology.- Worldwide Distribution of OMCs.- Control (Prevention) of OMCs, Future and Sustainability.