高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (2): 188.

• 论文 • 上一篇    下一篇

流动注射光纤动力学荧光法测定锰──锰-二元荧光配合物-高碘酸钠体系

王军锋, 章竹君   

  1. 陕西师范大学化学系, 西安 710062
  • 收稿日期:1994-04-18 修回日期:1994-10-03 出版日期:1995-02-24 发布日期:1995-02-24
  • 通讯作者: 章竹君
  • 作者简介:王军锋,男,26岁,硕士,现在陕西教育学院化学系工作.
  • 基金资助:

    国家自然科学基金

Determination of Manganese(Ⅱ)by Fiber Optic Kinetic Method with FIA and Binary Fluorescent Complex Indicator Manganese-Binary Fluorescent Complex-Sodium Periodate

WANG Jun-Feng, ZHANG Zhu-Jun   

  1. Department of Chemistry, Shan'xi Normal University, Xi'an, 710062
  • Received:1994-04-18 Revised:1994-10-03 Online:1995-02-24 Published:1995-02-24

摘要: 对二元荧光配合物作为动力学反应指示剂的可行性进行了考察,以8-羟基喹啉-5-磺酸铝-高碘酸钠为指示反应,建立起流动注射光导纤维光谱技术测定痕量锰(Ⅱ)的动力学荧光分析新体系.此法线性范围为5~200ng/mL,检出限为1ng/mL,对50ng/mL锰(Ⅱ)进行11次测定的相对标准偏差为0.5%,分析速度为45样次/h.

关键词: 锰, 二元荧光配合物, 催化动力学, 流动注射分析, 光导纤维光谱法

Abstract: Fiber optic has been coupled in the kinetic spectrofluorimetric apparatus with FIA.The feasibility of binary fluorescent complex as a new type of kinetic indicator has been investigated.Anew indicating reaction using8-hydroxyquinoline-5-sulfate aluminium as kinetic fluorescent indicator in Mn-H2QS-NaIO4system has been developed to determine trace manganese(Ⅱ).The limit of detection is 1 ng/mL and the linear calibration curve is obtained in the range of 5-200 ng/mL manganese(Ⅱ) level and the sampling speed is 45 samples per hour.The proposed method has been applied to determine manganese in teas,mineral and waters.

Key words: Manganese, Binary fluorescent complex, Catalytic kinetics, Flow injection analysis, Fiber optic spectrometry

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