Separation and Preconcentration of Trace Amounts of Manganese and Nickel from Natural Water Samples by a Diimine Derivative Schiff Base-Coated Silica-Gel Minicolumn
Figure 1
Effect of pH on the adsorption of Ni (II) and Mn (II) on Schiff base-coated silica-gel. Concentration of standard solution Mn (II) and Ni (II), 25 μg L−1. Sample flow rate, 5 mL min−1. Eluent type, 5 mL mixture of nitric acid 5 mol L−1, and methanol (1 : 1). Elution flow rate, 2 mL min−1.
