RT journal article
T1 Solid phase extraction of copper traces using poly (styrene-divinylbenzene) membrane disks modified with pyridoxal salicyloylhydrazone in water samples
A1 Díaz de Alba, Margarita Isabel
A1 Galindo Riaño, María Dolores
A1 García Vargas, Manuel
A2 Química Analítica
K1 Copper
K1 Water analysis
K1 Solid phase extraction
K1 Poly (styrene-divinylbenzene) membrane disks
K1 Pyridoxal salicyloylhydrazone
AB A simple technique for the isolation, concentration and matrix simplification of Cu(II) ion in natural waters is proposed. This method has been developed using poly(styrene-divinylbenzene) membrane disks modified with the synthesized ligand pyridoxal salicyloylhydrazone (PSH). The retained ions on the disks were eluted with 10mL 1mol L 1  HNO3 and measured by flame atomic absorption spectrometry at 324.8nm. The influence of pH, amount of ligand, type and amount of eluent for the stripping of copper ion from the membrane over extraction efficiency were evaluated. Extraction efficiencies 499% were obtained by elution of the disks with minimal amount of solvent with apreconcentration factor up to 100. The precision of the method for 10 replicate measurements ofaqueous solutions containing 40 mg L 1 Cu(II) was 1.5% at significance level of 95%. The breakthroughvolume for 5 mg of Cu(II) was found to be 1000mL and the detection limit of the method was 4ngL 1of metalion. The present method was successfully applied to the extraction and determination ofcopper in lake and sea waters.
PB Elsevier
YR 2012
FD 2012-08
LK http://hdl.handle.net/10498/20395
UL http://hdl.handle.net/10498/20395
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026