RT journal article
T1 A polymer inclusion membrane for the simultaneous determination of Cu (II), Ni(II) and Cd(II) ions from natural waters
A1 López Guerrero, M.M.
A1 Granado Castro, María Dolores
A1 Díaz de Alba, Margarita Isabel
A1 Lande Durán, J.
A1 Casanueva Marenco, María José
K1 Polymer inclusion membrane (PIM)
K1 metal ions determination
K1 extraction
K1 preconcentration
K1 natural waters
AB A novel polymer inclusion membrane (PIM), doped with pyridine-2-acetaldehyde benzoylhydrazone (2 APBH) as extractant, was synthesized and applied for the simultaneous extraction and preconcentration of Cu(II), Ni(II) and Cd(II) ions from natural waters of different salinities. Poly(vinyl chloride) (PVC) and tributyl phosphate (TBP) were used to prepare the polymeric membrane. The carrier-mediated extraction of Cu(II), Ni(II) and Cd(II) ions by PIM was based on the reaction of 2-APBH as a polydentate ligand, forming uncharged chelates at pH 8. After a back-extraction step from the membrane to an acid solution (0.3 mol L-1 nitric acid), these ions were quantitative determined by flame atomic absorption spectroscopy. The optimum values of different analytical variables were determined by using the modified simplex method. The results showed limits of detection of 0.33 μg L-1 for Cu(II), 0.75 μg L-1 for Ni(II) and 0.48 μg L-1 for Cd(II). The accuracy was successfully assessed by analyzing a certified reference river water (LGC 6019). The applicability of the proposed PIM on real samples was also demonstrated on estuarine and seawater samples, with high salinities.
PB Elsevier
SN 0026-265X
YR 2020
FD 2020
LK http://hdl.handle.net/10498/33271
UL http://hdl.handle.net/10498/33271
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026