About this book:

*Chemistry of the Sea: From Nutrients to Pollution* explores the ocean as a dynamic chemical engine essential to climate regulation and global biodiversity. The book transitions from foundational biogeochemical cycles—detailing the movement of carbon, nitrogen, phosphorus, silicon, and iron—to the contemporary crises of ocean acidification and deoxygenation. By examining the "biological pump" and the stoichiometry of nutrient supply, the text illustrates how microscopic microbial processes govern planetary-scale feedbacks, such as carbon sequestration and the expansion of oxygen minimum zones.

The narrative shifts to the profound impact of human activity on marine chemistry, specifically through the lens of eutrophication, harmful algal blooms, and the introduction of anthropogenic contaminants. It provides in-depth analyses of persistent organic pollutants (POPs), heavy metals like mercury, and emerging threats such as PFAS and microplastics. The book highlights how these substances move through the water column and bioaccumulate in food webs, fundamentally altering the chemical landscape of both coastal and open-ocean environments.

To address these challenges, the book emphasizes the evolution of analytical and observational technology. It covers the transition from traditional "clean lab" techniques to the use of autonomous gliders, BGC-Argo floats, and satellite remote sensing, which provide high-resolution data on a global scale. These tools, combined with complex biogeochemical modeling and stable isotope tracers, allow scientists to diagnose ecosystem health and predict future responses to climate change with increasing precision.

The concluding chapters bridge the gap between science and stewardship by discussing policy frameworks, environmental standards, and the potential of "blue carbon" pathways. Through diverse case studies—ranging from the Mississippi River’s "dead zones" to the sequestration potential of mangrove forests—the book argues for an integrated management approach. It underscores that the future of the ocean depends on translating chemical data into effective regulations that account for the complex, transboundary nature of marine systems.