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Perspective Chapter: The Pollution of Water by Trace Elements – Global Research Trends, Analytical Innovations and Future Directions (2015–2025)
Original title: Perspective Chapter: The Pollution of Water by Trace Elements – Global Research Trends, Analytical Innovations and Future Directions (2015–2025)
Summary
This review pulls together a decade of global research on toxic trace metals (like lead and arsenic) in our water supplies, showing they're building up in drinking water, rivers, and groundwater due to industrial pollution and can accumulate in the body over time. The paper also highlights an emerging concern: these metals are increasingly found interacting with other pollutants like microplastics, which may make water treatment more complicated and health risks harder to predict. While this isn't new experimental data, it's a useful roadmap of what scientists know so far and where better detection tools and water treatment solutions are still needed.
The trace elements present in wastewater are increasing concerns around the world as they are persistent, toxic at low levels, and accumulate in living organisms. The rapid industrialization, urbanization, and climatic factors have heightened the risks of trace element pollution in surface water, groundwater, and drinking water sources. This chapter provides a thorough overview of the global literature on trace element pollution in water between the years 2015 and 2025. The chapter begins by analyzing the situation in the global research arena, including publication patterns, geographical distribution, and major thematic trends. Developments in techniques of analysis and speciation are discussed, highlighting improved detection limits, the determination of bioavailability, and the identification of sources. Transport mechanisms, along with the sources and environmental fate of trace elements in aquatic systems, are also examined. Ecological and human health risk assessment procedures, as well as bioaccumulation mechanisms, are primarily addressed. Existing remediation and mitigation technologies, such as traditional treatment methods, adsorption-based technology, membrane technology, and nature-based solutions, are evaluated in terms of efficiency and sustainability. New associations between trace elements and other contaminants (such as microplastics and organic pollutants) are also explored. Finally, future research requirements are identified, including multi-contaminant frameworks, climate-reactive research, advanced monitoring devices, and closer interconnections between scientific studies and policy. This chapter is integrative as it supports the sustainable management of water quality.