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催化褪色光度法测定痕量铜(Ⅱ)已有报道,本实验发现,在中性介质中,铜(Ⅱ)催化过氧化氢氧化溴酚兰褪色反应。我们系统地研究了影响褪色反应的因素,在实验确定的条件下,建立了催化褪色光度法测定水样中痕量铜(Ⅱ)的新方法。方法灵敏度为4.0×10~(10)克铜(Ⅱ)/毫升,测定
Catalytic discoloring spectrophotometry for the determination of trace copper (Ⅱ) has been reported. It has been found in this experiment that copper (Ⅱ) catalyzes the discoloration of bromophenol blue by hydrogen peroxide in neutral medium. We systematically studied the factors affecting the fading reaction and established a new method for the determination of trace copper (Ⅱ) in water samples by catalytic discolouration spectrophotometry under the experimental conditions. Method sensitivity of 4.0 × 10 ~ (10) g copper (Ⅱ) / ml, measured