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Publication
A novel sampling strategy for metal ions determination in water: application to the determination of cadmium
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Advisor(s)
Abstract(s)
This work proposes a novel, portable, and reusable device for in situ water sampling, sample preparation, and analyte enrichment in a single step. For this purpose, a commercial cationic exchange resin (Chelex 100), was used to obtain a solid-phase extraction column for cadmium (II) retention and enrichment. The optimization of key parameters such as sample volume, reagents concentration, and flow-rate, was performed to maximize cadmium retention and elution efficiency. The method was applied to real samples, and the results agreed with those obtained with reference methodologies, with no significant differences (< 10%). Additionally, recovery rates of 97.8 ± 3.5% were achieved. This method integrates, in one step, the sampling and sample preparation procedures and employs reusable devices, contributing to providing a sustainable solution for metal ions monitoring in aquatic environments.
Description
Keywords
Cadmium quantification Sample preparation Sampling device Solid phase extraction Water sampling
Pedagogical Context
Citation
Rodrigues, F. A. P., Ribas, T. C. F., Mesquita, R. B. R., & Rangel, A. O. S. S. (in press). A novel sampling strategy for metal ions determination in water: application to the determination of cadmium. Talanta Open, 12, Article 100574. https://doi.org/10.1016/j.talo.2025.100574