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化学学报
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化学学报 ›› 1994, Vol. 52 ›› Issue (1): 71-75. 上一篇    下一篇

研究论文

停流流动注射-诱导动力学光度法同时测定微量铁和锑

王建华;何荣桓   

  1. 烟台师范学院化学系
  • 发布日期:1994-01-15

A stopped-flow inductive kinetic spectrophotometric method for simultaneous determination of iron and antimony

WANG JIANHUA;HE RONGHUAN   

  • Published:1994-01-15

PDF

425

被引次数

27 | 6

依据诱导反应的基本原理, 提出了一种同时测定多元素的方法; 研究了Fe(II)、Sb(III)诱导的Cr(VI)-I^-氧化还原反应体系, 并据此建立了停流-诱导动力学光度法同时测定微量铁和锑的工作条件。线性范围分别为0~1.2μg.mL^-1Fe(II)和0~2.0μg.mL^-1Sb(III); 检测限为0.012μg/mL^-1Fe(II)和0.014μg.mL^-1Sb(III)。除Ti(III)、V(IV)及As(III)外, 其余共存离子不影响测定。用本法测定了锌标准物及模拟样品中的铁和锑含量, 结果满意。

关键词: 锑, 铁, 同时测定, 流动注射分析, 诱导反应

A stopped-flow inductive kinetic spectrophotometric method for the simultaneous determination of iron and antimony was proposed. The principle of determination was discussed, and a procedure for simultaneous determination of Fe(II) and Sb(III) was established based on the inductive effect of them on the chromium (VI)-iodide redox reaction. The ealibration graphs were linear for 0~1.2μg.mL^-1Fe(II) and 0~2.0μg.mL^-1Sb(III) respectively, and the detection limits were 0.012 μg.mL^-1Fe(II) and 0.014μg.mL^-1Sb(III). The method was used for the determination of iron and antimony in zinc metal standard and simulated sample, and the results are satisfactory.

Key words: STIBIUM, IRON, SIMULTANEOUS DETERMINATIONS, FLOW INJECTION ANALYSIS, INDUCED REACTION

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