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Ion-imprinted silica adsorbent modified diffusive gradients in thin films technique: Tool for speciation analysis of free lead species
- Source :
- Talanta. 148
- Publication Year :
- 2015
-
Abstract
- A new diffusive gradients in thin films (DGT) device, using Pb(II) ion-imprinted silica (IIS) as the binding agents and commercial cellulose acetate dialysis (CAD) membrane as the diffusion layer (CAD/IIS-DGT), has been developed and evaluated for sampling and measurement of free Pb(II) species. The CAD/IIS-DGT devices were successfully applied to the measurement of free Pb(II) species in synthetic solutions, in natural freshwaters and in industrial wastewaters. The CAD/IIS-DGT provides reliable results over pH range of 4.5-6.5 and a wide range of ionic strength from 1.0×10(-3) to 0.7 mol L(-1). The concentrations of the free Pb(II) species in synthetic solution containing different concentrations of ligands measured by CAD/IIS-DGT showed a good agreement with the value measured by Pb-ion selective electrode. Field deployments of the CAD/IIS-DGT devices allowed accurate measurements of the concentrations of free Pb(II) species.
- Subjects :
- Silicon dioxide
Diffusion
010401 analytical chemistry
Analytical chemistry
02 engineering and technology
Electrophoresis, Cellulose Acetate
021001 nanoscience & nanotechnology
Silicon Dioxide
01 natural sciences
Cellulose acetate
Diffusive gradients in thin films
0104 chemical sciences
Analytical Chemistry
Diffusion layer
Molecular Imprinting
chemistry.chemical_compound
Membrane
Adsorption
chemistry
Lead
Ionic strength
0210 nano-technology
Subjects
Details
- ISSN :
- 18733573
- Volume :
- 148
- Database :
- OpenAIRE
- Journal :
- Talanta
- Accession number :
- edsair.doi.dedup.....93b179e3a921ba6ce9daa5734ef837bd