Solid Phase Extraction of Trace Copper(II) Using Octadecyl Silica Membrane Disks Modified with N,N′‐Disalicylideneethylenediamine

Abstract

A simple and reproducible method for the rapid extraction and determination of trace amounts of copper(II) ions using octadecyl-bonded silica membrane disks modified by N,N'-disalicylideneethylenediamine (DESDA) and atomic absorption spectrometry was presented. The method is based on complex formation on the surface of the ENVI-18 DISK TM disks followed by stripping of the retained species by minimum amounts of appropriate organic solvents. The elution is efficient and quantitative. The effects of potential interfering ions, pH, ligand amount, stripping solvent, and sample flow rate were also investigated. Under the optimal experimental conditions, the break-through volume was found to about be 1000 mL providing a preconcentration factor of 500. The maximum capacity of the disks was found to be (389±4) µg for Cu 2＋ . The limit of detection of the proposed method is 5 ng per liter. The method was applied to the extraction and recovery of copper in different water samples.

Flame atomic absorption spectrometric determination of zinc, nickel, iron and lead in different matrixes after solid phase extraction on sodium dodecyl sulfate (SDS)-coated alumina as their bis (2-hydroxyacetophenone)-1, 3-propanediimine chelates

“…In order to obtain high preconcentration factors, sample volume is a main factor for the preconcentration works [30][31][32][33][34][35]. To determining the sample loading volume, different experiments were performed by contacting the sample volumes, in the range of 50-550 mL at increments of 50 mL of sample solutions at pH 7 containing 50 g of all ions.…”

Solid‐phase extraction of lead and copper on a polyhydroxybutyrate‐b‐polydimethyl siloxane (PHB‐b‐PDMS) block copolymer disc and flame atomic absorption spectrometric determination of them in water and food samples

“…The matrix problems originating from alkaline earth and alkali metals in the atomic absorption spectrometric detection of metals could be solved by using separation techniques (Saracoglu et al ., ; Chen et al ., ; Moghimi, ; Soylak & Tuzen, ). 300 mL sample solution containing 10 μg Cu(II) and 20 μg Pb(II) and a given amounts of foreign ions were separated and preconcentrated according to section 2.4.…”

Extraction of Trace Cd(II) in Real Samples using Multi Walled Carbon Nanotubes Carboxylate

“…Coprecipitation [11][12][13] , membrane filtration 14,15 , electrodeposition 16 , cloud point extraction 17 and solvent extraction [18][19][20][21] are the popular methods for the preconcentration and separation of the traces transition metal ions. Solid phase extraction (SPE) of trace metal ions is also an important preconcentration/separation technique 1,[22][23][24][25] .…”