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阻抑动力学光度法测定痕量铜

Inhibitory kinetic spectrophotometric determination of trace copper?

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【作者】 龙莉袁建勇徐其亨

【Author】 LONG Li 1, YUAN Jian yong 2, XU Qi heng 3 (1. Department of Chemistry, Kunming Techer’s College, Kunming 650031, China; 2. Research Institute of Medical Biological Technology, Chinese Academy of Medical Sciences, Beijing 100050, China; 3. Departm

【机构】 昆明师专化学系!云南昆明650031中国医学科学院医药生物技术研究所!北京100050云南大学化学系!云南昆明650031

【摘要】 研究了在磷酸介质中 ,痕量铜 阻抑铬 氧化二安替比林基 -(3 -溴 )苯基甲烷显色的新指示反应及其动力学条件 ,建立了动力学光度法测定痕量铜 的新方法。ΔA与铜 浓度呈线性的范围为 1 0~ 6 0 μg/2 5mL ,相对标准偏差为1 5 1%。用于铝合金样品的分析 ,结果满意。

【Abstract】 A system of inhibitory kinetic spectrophotometic determination of trace copper? was investigated. In the presence of manganese ? and phosphoric acid, trace amounts of Cu? inhibit the reaction which chromium? oxidizes DAmBM to form an orange-red product. The reaction condition was studied. The linear relationship between the ΔA and the concentration of Cu? is found in the range of 1.0 to 6.0 μg/25mL, and the relative standard deviation is 1.51%. The method has been applied to the determination of trace copper in aluminum alloy with satisfactory results.

【关键词】 铜Ⅱ阻抑动力学光度法
【Key words】 copperinhibitorykinetic spectrophotometry
  • 【文献出处】 冶金分析 ,Metallurgical Analysis , 编辑部邮箱 ,2001年01期
  • 【分类号】O657.32
  • 【被引频次】5
  • 【下载频次】41
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