Preconcentration of Silver from Real Mine Wastes Using Deep Eutectic Solvent-Assisted Solidified Floating Organic Drop Microextraction and Determination by Flame Atomic Absorption Spectrometry
Source abstract
Abstract
Silver, a critical element in various technological and industrial sectors, is increasingly being targeted for recovery from secondary sources due to the depletion of primary reserves and the environmental impacts of traditional mining. This study presents the development and application of a novel, environmentally friendly analytical method for the preconcentration and determination of silver in mining waste using deep eutectic solvents (DES) in combination with solidified floating organic drop microextraction (SFODME) and flame atomic absorption spectrometry (FAAS). Analytical performance was evaluated in terms of linearity (7.5–200 µg/L, R2 > 0.995), enhancement factor (27.9), limit of detection (2.1 µg/L), and precision (RSD ± 2.32%, n = 8). The method’s validity was further validated through interference studies, analysis of certified reference materials (recovery rates: 80–93%), and application to real mining waste and tailings collected from gold-silver mining operations in Turkey’s Aegean region. Results confirm the method’s applicability for trace-level silver analysis in complex matrices, offering significant advantages in terms of sustainability, cost-effectiveness, and analytical reliability, aligned with the principles of green chemistry and resource recovery.
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Research context
OpenAlex topics: Analytical chemistry methods development · Ionic liquids properties and applications · Extraction and Separation Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Environmental Engineering, Hacettepe University, 06800 Ankara, Türkiye
Department of Geological Engineering, Hacettepe University, 06800 Ankara, Türkiye
Funding
Scientific and Technological Research Council of Türkiye · Hacettepe University Scientific Research Projects Coordination Unit
References (38)
Show source-provided references
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