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The article is based on the fact that Cu(Ⅱ) can catalyze the oxidation reaction of H 2O 2 on Brillant green in an acid solution.On this basis,a new sensitivity catalytic spectrophotometric method for the determination of traces Cu(Ⅱ) is established.The sensitivity of this method is 4×10 -9 g/ml,and the suiable concentration range of determination is 0.1～1.2μg/25ml,and the ε is 2.13×10 4cm·l·mol -1 .It has been applied to the determination of trace Cu(Ⅱ) in water with satisfactory results.
The article is based on the fact that Cu (II) can catalyze the oxidation reaction of H2O2 on Brillant green in an acid solution. On this basis, a new sensitivity catalytic spectrophotometric method for the determination of traces Cu (II) is established The sensitivity of this method is 4 × 10 -9 g / ml, and the suis concentration range of determination is 0.1-1.2 μg / 25 ml, and the ε is 2.13 × 10 4 cm · l · mol -1. It has been applied to the determination of trace Cu (Ⅱ) in water with satisfactory results.