Journal
TALANTA
Volume 100, Issue -, Pages 432-438Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2012.08.014
Keywords
Copper Water analysis; Solid phase extraction; Poly(styrene-divinylbenzene) membrane disks; Pyridoxal salicyloylhydrazone
Categories
Funding
- Formacion de Profesorado Universitario, from the Ministerio de Ciencia e Innovacion
Ask authors/readers for more resources
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 10 mL 1 mol L-1 HNO3 and measured by flame atomic absorption spectrometry at 324.8 nm. 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 > 99% were obtained by elution of the disks with minimal amount of solvent with a preconcentration factor up to 100. The precision of the method for 10 replicate measurements of aqueous solutions containing 40 mu g L-1 Cu(II) was 1.5% at significance level of 95%. The breakthrough volume for 5 mu g of Cu(II) was found to be 1000 mL and the detection limit of the method was 4 ng L-1 of metal ion. The present method was successfully applied to the extraction and determination of copper in lake and sea waters. (C) 2012 Elsevier By. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available