【摘要】 本文研究了在酸性条件下,用二苯硫腙（H₂D₂）的四氯化碳溶液萃取Cu（Ⅱ）时,2,2’-联吡啶（dipy）活化Cu（Ⅱ）催化H₂D₂氧化褪色反应的机理;测定反应前后有机相H₂D₂的吸光度（620nm）的改变,建立了测定痕量铜的新方法检出限为10^-9g/ml,测定范围为1.25×^-910-1.0×10^-7g/ml.可应用于水样、高纯试剂中痕量铜的测定,方法可靠,结果令人满意.更多还原

【Abstract】 On the condition of acidity, the paper studies, when catalytic Cu²⁺ is extracted by H₂D₂-Cel₄ solution, the mechanism of H₂D₂ redox fade reaction of dipy activation Cu²⁺ and catalysisH₂D₂, determines the changes of H₂D₂ adsorption value （ 620nm ） ,proposes a new sensitive method for determination of trace amount copper? and detects the limits of 10^-9g·ml^-11.0×10^-7 g·ml^-1 It can be used to determine trace amount copper in water and high pure agent and available. The results are satisfactory.更多还原