![]() ![]() Standard iron solution: Pipette 50 mL stock solution into 1 litre volumetric flask and dilute to the mark with distilled water.Each 1 mL of this solution contains 200 µg Fe. Dilute to 1litre with iron free distilled water. Add 0.1 N KMnO4 drop wise until a faint-pink colour persists. Stock iron solution: Add slowly 20 mL concentrated H2SO2 to 50 mL distilled water and dissolve 1.404 g ferrous ammonium sulphate.1 mL of this reagent is sufficient for no more than 100 µg Fe. Heating is unnecessary if 2 drops of concentrated HCl are added to the distilled water. Phenanthroline solution: Dissolve 100 mg 1, 10-phenanthroline monohydrate (C 12H 8N 2.H 2O) in 100 mL distilled water by stirring and heating to 80☌.Sodium acetate solution: Dissolve 200 g sodium acetate (NaC 2H 3O 2.Add 700 mL concentrated (glacial) acetic acid. Ammonium acetate buffer solution: Dissolve 250 g ammonium acetate (NH 4C 2H 3O 2) in 150 mL distilled water.Hydroxylamine solution: Dissolve 10 g hydroxylamine hydrochloride salt (NH 2OH.HCl) in 100 mL distilled water.Ion Transport Across Biological Membranes. ![]() Continuity and Evolution of Animal Life. ![]()
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