Preconcentration/Separation of Some Metal Ions Using Sodium Dodecyl Sulfate Coated Alumina Modified with Bis(5‐bromo‐2‐hydroxy‐benzaldehyde)‐2‐methyl‐1,5‐pentane Diimine (BBHBPDI) Prior to Their Flame‐AAS Determination

Abstract

Preconcentration/separation of Co(II), Fe(III), Pb(II), Cr(III), Cu(II) and Cd(II) ions using bis(5-bromo-2-hydroxy-benzaldehyde)-2-methyl-1,5-pentane diimine (BBHBPDI) on SDS coated alumina has been reported. The influences of the analytical parameters including pH, ligand and SDS amount, type and concentration of eluent and sample volume on metal ions recoveries were investigated. At optimum values of all variables the relative standard deviation are between 2.5-2.7 and preconcentration factor was 375, while recoveries for all understudy metal ions are higher than 95%, determination limits are between 1.5-2.7. The method has been successfully applied to determination of Co(II), Fe(III), Pb(II), Cr(III), Cu(II) and Cd(II) ions content in some real samples.

Diaion HP-2MG modified with 2-(2,6-dichlorobenzylideneamino) benzenethiol as new adsorbent for solid phase extraction and flame atomic absorption spectrometric determination of metal ions

“…The ligand was synthesized according to a similar method in our previous report. 19 The physical and spectral data of present ligand is as follow: elemental analysis, % C 13 H 9 C l2 NS: calculated: C, 55.33; H, 3.21; N, 4.96 found: C, 54.8; H, 3.4; N, 4.7. IR (KBr, cm − 1 ): 3444 (bs, νOH), 3054 (w, CH-Aromatic), 2915 (w, CH-iminic), 1623 (–C=N), 1565 (C=C), 1461 (m, C=C), 1430 (m), 1373 (w), 1268 (m, νC–N), 1199 (w), 1095 (m, C–O), 1041 (m), 964 (m), 887 (s), 759 (s, C–S), 555 (m).…”

“…19 The physical and spectral data of present ligand is as follow: elemental analysis, % C 13 H 9 C l2 NS: calculated: C, 55.33; H, …”

“…The ligand was synthesized according to a similar method in our previous report. 19 The physical and spectral data of present ligand is as follow: elemental analysis, % C 13…”

Modification of platinum nanoparticles loaded on activated carbon and activated carbon with a new chelating agent for solid phase extraction of some metal ions

“…The above mention limitations encourage and make ephases and presure on the reserchers to conduct preliminery separation and/or preconcentration stage which simultaneouesly led to simplfing the sample matrix and enhancement of analyete concentration [8].…”