Determination of Trace Amount of Cadmium by Atomic Absorption Spectrometry in Table Salt after Solid Phase Preconcentration Using Octadecyl Silica Membrane Disk Modified by a New Derivative of Pyridine

<table>Effect of breakthrough volume on recovery (%) (extraction conditions: eluent solvent, 5.0 mL of HNO<sub>3</sub> (1.0 mol/L); amount of ligand, 8 mg; sample solution pH, 9.0; concentration of Cd ion, 0.10 mg L<sup>−1</sup>).</table>

Journal of Chemistry

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Figure 4

Figure 4: Determination of Trace Amount of Cadmium by Atomic Absorption Spectrometry in Table Salt after Solid Phase Preconcentration Using Octadecyl Silica Membrane Disk Modified by a New Derivative of Pyridine 

Figure 4 | Determination of Trace Amount of Cadmium by Atomic Absorption Spectrometry in Table Salt after Solid Phase Preconcentration Using Octadecyl Silica Membrane Disk Modified by a New Derivative of Pyridine 