RT journal article
T1 Multi-elemental ionic liquid-based solvent bar micro-extraction of priority and emerging trace metallic pollutants (Cd, Ag, Pd) in natural waters
A1 Herce Sesa, Belén
A1 López López, José Antonio
A1 Moreno Aguilar, Carlos
A2 Química Analítica
K1 Cadmium
K1 Palladium
K1 Silver
K1 Seawater
K1 Hyper-saline waters
K1 Liquid microextraction
K1 Solvent bars
K1 Ionic liquid
K1 Cyphos® 101
AB Transition metals Cd, Pd and Ag are toxic even at very low concentration. Cd is considered a priority substance; while, Pd and Ag are emerging pollutants. Membrane technologies have been applied for their extraction; however, they require important amounts of reagents, time and energy. Additionally, effective reagents for metal extraction in saline natural waters are limited. In this case, hollow fiber liquid phase micro-extraction with a configuration of solvent bar (SBME) using the ionic liquid Cyphos® 101 as extractant is proposed. Optimized conditions for SBME of Cd, Ag and Pd were 50% Cyphos® 101 in the organic solution, extraction time 30 min and 800 rpm stirring rate. Leaching was in all cases lower than 0.1%. Metallic concentrations were measured by flame atomic absorption spectroscopy. The method was applied to the extraction of Ag, Cd and Pd in natural water samples. Except for waste water, Pd extraction was higher than 90% in all cases. Cd (≈100%) and Ag (93–95%) offered their best results for saline samples. Concluding, the proposed system is a low cost and green methodology that allows a simple and fast extraction of trace pollutants such as Ag, Cd and Pd in different natural waters, including highly saline samples.
PB Elsevier
SN 0304-3894
YR 2019
FD 2019
LK http://hdl.handle.net/10498/33060
UL http://hdl.handle.net/10498/33060
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026