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Abstract
In a solution containing 0.005M borax medium (PH= 8− 10). 0.03% ascorbic acid and 0.001% gelatin, a fine sensitive adsorptive reduction peak of manganese appeared at −1.53v (vs.SCE) on a hanging mercury electrode by fast speed scanning voltammetry. The derivative peak current is directly proportional to the concentration of manganese in the range from 1.0×10−8M to 2.0×10−6M. The detection limit is 3.0×10−9M. Using this method, we have successfuly determined tracesof Mn in water and strawberry samples.