Flame atomic absorption spectrometric determination of silver ion after preconcentration on octadecyl silica membrane disk modified with bis[5-((4-nitrophenyl)azosalicylaldehyde)] as a new Schiff base ligand

2003 ◽  
Vol 18 (11) ◽  
pp. 1407 ◽  
Author(s):  
Tayebeh Shamspur ◽  
Mohammad Hossein Mashhadizadeh ◽  
Iran Sheikhshoaie
Keyword(s):  
Schiff Base ◽  
Atomic Absorption ◽  
Schiff Base Ligand ◽  
Silver Ion ◽  
Silica Membrane ◽  
Octadecyl Silica ◽  
Flame Atomic Absorption ◽  
Atomic Absorption Spectrometric ◽  
Membrane Disk

scholarly journals Solid-Phase Extraction and Atomic Absorption Spectrometric Determination of Cobalt Using an Octadecyl Bonded Silica Membrane Disk Modified with Cyanex 272

2011 ◽  
Vol 94 (2) ◽  
pp. 627-633 ◽  
Author(s):  
Manjusha Karve ◽  
Jayram V Gholave
Keyword(s):  
Atomic Absorption ◽  
Solid Phase ◽  
Maximum Flow ◽  
Silica Membrane ◽  
Cyanex 272 ◽  
Flame Atomic Absorption ◽  
Spe Method ◽  
Atomic Absorption Spectrometric ◽  
Membrane Disk

Abstract A simple SPE method for determination of cobalt(II) using a C18 bonded silica membrane disk impregnated with Cyanex 272 has been developed. Cobalt(II) was quantitatively sorbed at pH 6.0 from a sample solution and eluted using 10.0 mL 1.0 M HNO3 prior to its flame atomic absorption spectrometric determination. The influence of eluting agents, the minimum volume and maximum flow rate of the eluent, and interfering ions on cobalt(II) was studied. The method developed for cobalt(II) had an LOD of 1.4 g/L, and a preconcentration factor >200 with an RSD of 0.6. The reusability of the modified disk was for 40 cycles. The method was applied for the determination of cobalt in certified samples, urine, and industrial sludge samples.

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