Revista de química analítica ambiental

Chelating resins have emerged as pivotal tools in the field of trace metal ion analysis due to their exceptional selectivity, high capacity, and ease of regeneration. This review aims to explore the diverse applications of chelating resins in the extraction, preconcentration, and determination of trace metal ions from various matrices. The article provides an overview of different types of chelating resins, their synthesis methodologies, and the factors influencing their performance in analytical applications. Furthermore, it discusses recent advancements, challenges, and future prospects in the use of chelating resins for enhancing sensitivity and selectivity in trace metal ion analysis.

Microwave digestion has revolutionized the analysis of trace metals in environmental samples such as sediment, soils, and urban particulate matter due to its efficiency, speed, and effectiveness in sample preparation. This article reviews the principles, methodologies, and recent advancements in microwave digestion techniques tailored for the analysis of trace metals in these complex matrices. The discussion covers key aspects including sample preparation protocols, method validation, analytical techniques employed post-digestion, and applications in environmental monitoring and assessment.

Trace metals are ubiquitous in the environment, with significant implications for ecosystem and human health due to their bio accumulative nature and toxicity. This article explores various models used to understand trace metal bioaccumulation, focusing on metabolic availability and associated toxicological impacts. The review synthesizes current research findings on the mechanisms of bioaccumulation, factors influencing metal uptake, and the resultant toxicity across different organisms and environments. Key aspects such as speciation, bioavailability, and ecological interactions are discussed to provide a comprehensive understanding of trace metal dynamics in biological systems.

Trace metal analysis in natural waters is crucial for understanding environmental health and assessing anthropogenic impacts. Accurate measurements depend significantly on proper sampling and storage techniques to minimize contamination and preserve sample integrity. This review explores various methods employed in the field, focusing on their effectiveness, limitations, and advancements. Key considerations include sampling strategies, preservation methods, and analytical techniques relevant to trace metal analysis.