高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (1): 47.

• 论文 • 上一篇    下一篇

流动注射停流荧光动力学分析法测定痕量铁的研究

黄厚评, 蔡汝秀, 曾云鹗, 高登云   

  1. 武汉大学化学系, 武汉 430092
  • 收稿日期:1994-03-03 修回日期:1994-07-20 出版日期:1995-01-24 发布日期:1995-01-24
  • 通讯作者: 黄厚评,男,28岁,博士研究生
  • 作者简介:黄厚评,男,28岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Studies on Flow-injection Stopped-flow Florescence Kinetic Method for Determination of Trace Iron

HUANG Hou-Ping, CAI Ru-Xiu, ZENG Yun-E, GAO Deng-Yun   

  1. Department of Chemistry, Wuhan University, Wuhan, 430072
  • Received:1994-03-03 Revised:1994-07-20 Online:1995-01-24 Published:1995-01-24

PDF (PC)

被引次数

5

摘要： 利用自行组装的流动注射停流荧光动力学分析装置,研究了铁(Ⅲ)与3,5-二溴水杨基荧光酮的荧光动力学反应性质,提出了一种快速、简便、精确地测定痕量铁的新方法。其线性范围为0.020～0.250μg/mL,线性相关系数为0.999,检测限为10ng/mL,以0.200μg/mL的铁(Ⅲ)作精度试验,R.S.D%=2.1%(n=11).该方法已成功地用于铝合金及桃树叶中痕量铁的测定,结果分别与ICP法和标准参考结果相符。

关键词: 流动注射停流技术, 荧光动力学分析法, 铁(Ⅲ), 3, 5－二溴水杨基荧光酮

Abstract: A new flow-injection stopped-flow fluorescence kinetic method for determination of trace iron(Ⅲ) was proposed. The method is based on monitoring the binary fluorescence complex formation of Fe(Ⅲ) with 3,5-dibro mosalicylfluorone(DBSAF) at 510 nm/510 nm in an acidic medium.The linearity range is between 0.020 and 0.250 μg/mLwith a correction coefficient of 0.999 and a detection limitation of 10 ng/mL. The method has been ap plied to the determination of Fe(Ⅲ)in alluminum alloy and peach leaves, the results are in agreement with ICPmethod and standard reference value, respectively.

Key words: Flow-injection stopped-flow technique, Fluorescence kinetic anaiysis, Iron(Ⅲ), 3, 5-Dibromosalicylfluorone

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