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2024 | Buch

Persistent Organic Pollutants in Aquatic Systems

Classification, Toxicity, Remediation and Future

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Über dieses Buch

This book addressed an in-depth comprehension of the classifications and characterizations of POPs, which have become global issues due to bioaccumulation, persistency, and toxicity. It represents the milestones of the development of pesticide application, industry, and management. Banned SC-POPs have special investigations. It discusses air-sea exchange, ocean currents, phase distribution, speciation, adsorption, desorption, and degradation as the key processes that control POP's fate. The book explores several aspects of POP chemistry that have a direct influence on their biochemical and toxicological consequences. The book illustrates the dynamic equilibriums influencing the proportion of a POP's gaseous, liquid, and solid phases. The book discussed POP migration by referring to the grasshopper effect. It also explores the impacts of climate change on emissions and the fate of POPs through a global-scale multimedia fate model. Additionally, it displays the impact of potential global change scenarios on POP bioaccumulation patterns. The book is directed at giving a deep discussion of the method's QA/QC process for POP determination and has verified the accuracy and precision of the procedures. As a distinctive point, it discusses many aspects concerning the toxicity of POPs. It reports mechanisms describing the toxicity of POPs on immune systems, carcinogenesis, endocrine, neural, and reproductive systems. The book keeps an eye on a model describing the global distribution and toxicity of PAHs. Among the exclusive points in the book is the evaluation of the recent ecological status in Egypt relative to POPs through a time-scale overview and recent case studies. It provides thematic literature related to DDC research in Africa through the WoS and Scopus databases from 1949 to 2021. The book emphasizes models for predicting the annual contribution rate of POPs as a way to raise public awareness about POPs. The greatest challenge for the book is how to motivate the audience to be aware of these hazardous materials in marine ecosystems. Moreover, this book will be of great interest to academics, professionals, practitioners, post-graduate students, and undergraduates because it gives a clear overview of POPs in the marine environment. It also provides decision-makers with a realistic perspective of the environmental file, allowing them to address environmental issues and directing stockholders to safer locations for environmental activity. From a future perspective, the regulation of pervasive POPs, with special reference to recently evaluated harmful substances (PFASs), has faced significant challenges in the wake of pressure from regulators.

Inhaltsverzeichnis

Frontmatter
Chapter 1. Classifications, Sources, and Significant Features of POPs in Aquatic Environment with Special Reference to Dirty Dozen
Abstract
An in-depth comprehension of the classifications, characterizations, and bioaccumulative properties of persistent organic pollutants (POPs), which have become global issues due to bioaccumulation, persistency, and toxicity, is addressed. Literary concept on POPs is discussed in detail. The milestones of development of pesticide application, industry, and management are represented. Banned POPs: the dirty dozen and nasty nine, according to the Stockholm Convention on persistent organic pollutants (SC-POPs), have special investigations. Natural and anthropogenic sources of POPs are highlighted. The molecular diagnostic ratio (MDR) to identify polycyclic aromatic hydrocarbon (PAH) sources is highlighted. Many biopesticides assigned by the US Environmental Protection Agency are reported. POPs can be categorized into three common classes: polycyclic aromatic hydrocarbons (PAHs), pesticides (herbicides, fungicides, and bactericide), and polychlorinated biphenyls (PCBs). Reproductive problems, immunological and neurological illnesses, cancer, and endocrine disruption are some of the most well-known harmful health outcomes linked to POP toxicity. The primary fate of POPs in the marine environment is through atmospheric deposition at the air-sea interface. A second important route for POPs is when they attach to settling particles in municipal or industrial effluents and are deposited in the bottom sediment. The key processes that control the fate of POPs are air-sea exchange, ocean currents, phase distribution, and degradation.
Tarek Othman Said, Gehan Mohamed El Zokm
Chapter 2. Chemistry of POPs Referring to Scenarios and Forecasting the Effects of Global Change
Abstract
Several aspects of POP chemistry have a direct influence on their biochemical and toxicologic consequences. Processes of speciation, adsorption, desorption, and degradation have affected the chemical behavior of POPs. The dynamic equilibriums influencing the proportion of a POP’s gaseous, liquid, and solid phases are illustrated. The processes controlling the global scale of the POP cycle are discussed. POP migration is explained by referring to the grasshopper effect. The impacts of climate change on emissions and the fate of POPs will be highlighted using a global-scale multimedia fate model. Predicting the impact of potential global change scenarios on POP bioaccumulation patterns is reported.
Tarek Othman Said, Gehan Mohamed El Zokm
Chapter 3. SOP for Determination of POPs
Abstract
The method’s QA/QC process begins with sample collection (water, sediment, and biota). The collection techniques utilized must yield a representative sample that remains unchanged throughout the collection. Silica rubber, low-density polyethylene (LDPE) bags, and semipermeable membrane device (SPMD) are powerful sampling tools that have recently been created and employed in aquatic environments. Extraction and fractionation techniques are presented. The most commonly used equipment for determining POPs is high-performance liquid chromatography (HPLC) and gas chromatography. The accuracy and precision of the procedures described should be verified.
Tarek Othman Said, Gehan Mohamed El Zokm
Chapter 4. Toxicology and Ecological Risk with Emphasis on Scenario-Describing Mechanisms
Abstract
Persistent organic pollutants (POPs) have a high lipid solubility, making them susceptible to passing through the phospholipid structure of biological membranes and accumulating in fat deposits. POPs can resist environmental degradation through chemical, biological, and photolytic processes. POPs are becoming a major concern due to their toxicological characteristics and ambiguous ecological behavior. They can disrupt reproductive function and sociosexual behaviors via changes in neuroendocrine mechanisms. The toxic equivalent (TEQ) and risk quotient (RQ), toxicity-exposure ratio (TER), predicted no-effect concentration (PNEC), and lifetime cancer risk (ILCR) were used to evaluate the ecological risk of POPs. The impact of POPs on ecosystems and humans is discussed. The kinetics and behavior of POPs in humans and other animals depend on many parameters, including the mode of exposure, the particle size, and the molecular weight. Oxidative stress, cell apoptosis, and insulin/IGF-1 signaling pathway are the most common modes of action describing the toxicity of POPs. POPs’ effects on immune systems, carcinogenesis, endocrine, developmental, neural, and reproductive systems are reported. A model for the source, distribution, and toxicity of polycyclic aromatic hydrocarbons (PAHs) (chemical mass balance model and toxic equivalents—CMB-TEQ) is highlighted. Many equations are evaluated to benchmark human and ecological risks.
Tarek Othman Said, Gehan Mohamed El Zokm
Chapter 5. POPs in Aquatic Systems of Worldwide Polluted Sites Referring to Bibliometric Approach
Abstract
A global distribution of persistent organic pollutants (POPs) is reported. Evaluation of recent ecological status in Egypt relative to POPs through a time scale overview and recent case studies is highlighted. Quick survey of POPs in aquatic systems of worldwide hot spots through a look into studies that covered the distribution of POPs [Adriatic Sea, Arctic Zone, Baltic Sea, Brazil, China, Czech Republic, Egypt, Ghana, India, Japan, Korea, Mediterranean Sea, Mexico, Poland, Portugal, Red Sea Coasts, Singapore, Spain, Taiwan, Thailand, United States, and Vietnam]. A bibliometric analysis examines the trends illustrated in dirty dozen chemicals (DDC). Thematic literature classification of research related to DDCs research in Africa was reported through the Web of Science (WoS) and Scopus databases from 1949 to 2021.
Tarek Othman Said, Gehan Mohamed El Zokm
Chapter 6. Fate, Bioaccumulation, Remediation, and Prevention of POPs in Aquatic Systems Regarding Future Orientation
Abstract
The accumulation, fate, and destiny of persistent organic pollutants (POPs) in aquatic systems are all influenced by a variety of factors. The primary fate of POPs in the marine environment is through atmospheric deposition at the air-sea interface. Diffuse vapor exchange, aerosol-vapor partitioning, precipitation scavenging of vapors and particle-sorbed chemicals, and dry particle deposition are the processes that contribute to the exchange of POPs between the air and the sea. A second important route for POPs is when they attach to settling particles in municipal or industrial effluents and are deposited in the bottom sediment (BS). POPs have a high bioaccumulation and biomagnification potential. It is advised to use a variety of remediation methods to remove POPs from aquatic environments. The emphasis is on models for predicting the annual contribution rate of POPs. The greatest challenges for the safety environment are raising managerial capacity and public awareness about POPs. Numerous international agreements have been formed to limit POP emissions and lessen environmental pollution, such as the Stockholm Convention on POPs, which is ratified by 186 countries. An international negotiating committee (INC) (12 POPs) was established by the United Nation Environment Program (UNEP) Governing Council in 1997 through decision 19/13C. At a Conference of Plenipotentiaries convened in Stockholm, Sweden, in 2001, the Stockholm Convention was adopted and made available for signature. In 2004, the Convention became operative. In the end, the Stockholm Convention included perfluorooctanoic acid (PFOA) and its salts in 2019. The Stockholm Convention review, which was finished in 2022, found that many governments still needed to improve the domestic legal, administrative, and other measures to manage POPs. This included creating or updating national laws and regulations pertaining to POPs and their waste.
Tarek Othman Said, Gehan Mohamed El Zokm
Backmatter
Metadaten
Titel
Persistent Organic Pollutants in Aquatic Systems
verfasst von
Tarek Othman Said
Gehan Mohamed El Zokm
Copyright-Jahr
2024
Electronic ISBN
978-3-031-53341-9
Print ISBN
978-3-031-53340-2
DOI
https://doi.org/10.1007/978-3-031-53341-9